Mitsubishi Electric PUMY-P125VMA Service Manual

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SPLIT-TYPE, HEAT PMUP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

R407C

Outdoor unit [Model name] [Service Ref.]

PUMY-P125VMA PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA

2003

No.OC272

REVISED EDITION-A

Revision :

•PUMY-P125VMAand PUMY-P125YMA1 are added in REVISED EDITION-A.

•Please void OC272.

PUMY-P125YMA

CONTENTS

1. TECHNICAL CHANGE ·····································2

2. SAFETY PRECAUTION ····································3

3. OVERVIEW OF UNITS······································5

4. SPECIFICATIONS·············································8

5. DATA ·······························································10

6. OUTLINES AND DIMENSIONS······················18

7. WIRING DIAGRAM·········································19

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

9. TROUBLESHOOTING ····································34

10. ELECTRICAL WIRING ····································72

11. REFRIGERANT PIPING TASKS·····················75

12. DISASSEMBLY ···············································80

13. PARTS LIST ····················································86

···22

OUTDOOR UNIT

1 TECHNICAL CHANGE

PUMY-P125YMA ➔ PUMY-P125YMA1

1. Addition of new function (Auto Change Over)

PUMY-P125YMA : Not equipped PUMY-P125YMA1 : Equipped

2. Difference of operation switching logic for the outdoor output connector (CN3D)

PUMY-P125YMA : CN3D 1-2 ······ OPEN : Heating CLOSE : Cooling PUMY-P125YMA1 : CN3D 1-2 ······ OPEN : Cooling CLOSE : Heating

3. Difference of the role of SW5-1 (function selection switch)

PUMY-P125YMA : Fix the operation frequency ······························ ON : Fix OFF : Normal PUMY-P125YMA1 : Auto Change Over from Remote Controller ······ ON : Enable OFF : Disable

2 SAFETY PRECAUTION

Cautions for using with the outdoor unit which adopts R407C refrigerant.

· Do not use the existing refrigerant piping.

-The old refrigerant and refrigerant oil in the existing piping contains a large amount of chlorine which may cause the refrigerant oil of the new unit to deteriorate.

· Do not use copper pipes which are broken, deformed or discolour .

In addition, be sure that the inner surfaces of the pipes are clean, free of hazardous sulphur and oxides, or have no dust /

dirt, shaving particles, oils, moisture or any other contamination.

-If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the refrigerant oil will result.

· Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Store elbows and other joints in a plastic bag.)

-If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.

· Use ester oil, ether oil or alkyl benzene (small amount) as the refrigerant oil to coat flares and flange connections.

-The refrigerant oil will degrade if it is mixed with a large amount of mineral oil.

Use liquid refrigerant to fill the system.

-If gas refrigerant is used to fill the system, the composition of the refrigerant in the cylinder will change and performance

may drop.

· Do not use a refrigerant other than R407C.

-If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the refrigerant oil to deteriorate.

· Use a vacuum pump with a service port.

-The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerant oil to deteriorate.

· Do not use the following tools that are used with conventional refrigerant. (Gauge manifold , charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge,

refrigerant recovery equipment)

-If the conventional refrigerant and refrigerant oil are mixed in the R407C, the refrigerant may deteriorated.

-If water is mixed in the R407C, the refrigerant oil may deteriorate.

-Since R407C does not contain any chlorine, gas leak detectors for conventional refrigerant will not react to it.

· Do not use a charging cylinder.

-Using a charging cylinder may cause the refrigerant to deteriorate.

· Be especially careful when managing the tools.

-if dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.

· Do not use the drier which is sold in the field.

-The drier for R407C refrigerant is pre-attached to outdoor unit refrigerant circuit.

-Some drier in the field are not in conformity with R407C refrigerant.

Gravimeter

Unit

[1] Service tools

Use the below service tools as exclusive tools for R407C refrigerant.

No. Tool name Specifications

1 Gauge manifold ·Only for R407C.

·Use the existing fitting SPECIFICATIONS. (UNF 7/16)

·Use high-tension side pressure of 3.43MPa·G or over.

2 Charge hose ·Only for R407C.

·Use pressure performance of 5.10MPa·G or over.

3 Electronic scale 4 Gas leak detector ·Use the detector for R407C. 5 Adapter for reverse flow check. ·Attach on vacuum pump. 6 Refrigerant charge base. 7 Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon

8 Refrigerant recovery equipment.

[2] Notice on repair service

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

[3] Refrigerant recharging

(1) Refrigerant recharging process

1 Direct charging from the cylinder.

·R407C cylinder are available on the market has a syphon pipe.

·Leave the syphon pipe cylinder standing and recharge it. (By liquid refrigerant)

(2) Recharge in refrigerant leakage case

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release the refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

3 OVERVIEW OF UNITS

20 25 32 40 50 63 71

80 100 125

–

– 32VKM-A 40VKM-A 50VKM-A 63VKM-A

– 80VAM-A

100VAM-A 125VAM-A

20VLMD-A 25VLMD-A 32VLMD-A 40VLMD-A 50VLMD-A 63VLMD-A

–

80VLMD-A 100VLMD-A 125VLMD-A

20VML-A / VMM-A 25VML-A / VMM-A 32VML-A / VMM-A 40VMH-A / VMM-A 50VMH-A / VMM-A 63VMH-A / VMM-A 71VMH-A / VMM-A

80VMH-A / VMM-A 100VMH-A / VMM-A 125VMH-A / VMM-A

20VM-A 25VM-A 32VM-A 40VM-A 50VM-A 63VM-A 71VM-A

80VM-A 100VM-A 125VM-A

20VAM-A 25VAM-A 32VGM-A 40VGM-A 50VGM-A 63VFM-A

– –

100VFM-A

–

20VLEM-A 25VLEM-A 32VLEM-A 40VLEM-A 50VLEM-A 63VLEM-A

– – – –

20VLRM-A 25VLRM-A 32VLRM-A 40VLRM-A 50VLRM-A 63VLRM-A

– – – –

– – –

40VGM-A

–

63VGM-A

–

– 100VGM-A 125VGM-A

PLFY-P PLFY-P PEFY-P PDFY-P PKFY-P PCFY-P PFFY-P PFFY-P

Capacity

Model

Cassette Ceiling

4-way flow 2-way flow

20VBM-A 25VBM-A 32VBM-A 40VBM-A

– – – – – –

PMFY-P

1-way flow

Ceiling

Concealed

Ceiling mounted

built-in

Ceiling

Suspended

Wall Mounted

Floor standing

Exposed Concealed

Remote

controller

Name

Model number

Functions

M-NET remote controller

PAR-F27MEA-E

• A handy remote controller for use in conjunction with the Melans centralized management system.

• Addresses must be set.

• Addresses setting is not necessary.

•

Only the indoor unit for MA remote controller

(the end of model name is -A) can be used.

MA remote controller

PAR-20MAA-E

3-1. UNIT CONSTRUCTION

Outdoor unit

5HP

PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA

Indoor unit that can be connected

Branching pipe components

Capacity

Number of units

Total system wide capacity

CMY-Y62-C-E CMY-Y64-C CMY-Y68

Branch header

(2 branches)

Decorative panel

Type 20~Type 125

1~8 units

50~130% of outdoor unit capacity

Branch header

(4 branches)

Branch header

(8 branches)

CMY-S65

Multi distribution

Piping on outdoor

unit

(5 branches)

3-2. UNIT SPECIFICATIONS

P L F Y - P 80 V AM - A PU M Y - P 125 V M A

PAC type

AM KM M KM LMD

Frequency conversion controller

Refrigerant R407C/R22 commonness

Refrigerant R407C

NEW frequency converter one-to-many air conditioners (flexible design type)

Indicates equivalent to Cooling capacity

Power supply V: Single phase 220-230-240V 50Hz 220V 60Hz

Power supply V: Single phase 220-230-240V 50Hz

Y: 3-phase 380-400-415V 50Hz 380V 60Hz

L : Ceiling cassette K : Wall-mounted type E : Hidden skylight type C: Ceiling suspended type M: Ceiling cassette type F : Floor standing type

}

M-NET control

MA control

Sub-number

Frequency conversion controller

Outdoor unit

MULTI-S

Service Ref.

PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA1

Capacity

Cooling (kW) Heating (kW)

14.0

16.0

3.5Motor for compressor (kW)

Cooling W.B. 15~24°C D.B. -5~46°C

Heating D.B. 15~27°C W.B. -15~15.5°C

Indoor-side intake air temperature Outdoor-side intake air temperature

(1) Outdoor Unit

Cooling / Heating capacity indicates the maximum value at operation under the following condition.

w. Cooling Indoor : D.B. 27°C / W.B. 19.0°C

Outdoor : D.B. 35°C

Heating Indoor : D.B. 20°C

Outdoor : D.B. 7°C / W.B. 6°C

(2) Method for identifying MULTI-S model

■ Indoor unit < When using Model 80 >

■ Outdoor unit <When using model 125 >

(3) Operating temperature range

Notes D.B. : Dry Bulb Temperature

W.B. : Wet Bulb Temperature

3-3. SYSTEM LAYOUT

indoor

First branch

(branching connector)

Outdoor unit

125

80 40 40

Outdoor unit

Indoor unit

Type 20 ~ Type 125

PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA

1~8 units

63~163

Indoor unit that can connected Available capacity of indoor unit Total capacity of units that can be included system

(50-130% of outdoor unit capacity)

3-3-1. System layout

One outdoor unit using branching connectors can be connected to a maximum of eight indoor units.

■Examples of a branching method

3-3-2. Notes on the connection of indoor and outdoor units

Note: When the total capacity of indoor units exceeds the capacity of the outdoor unit (more than 100%), the rated power of

each indoor unit will be less when they are running simultaneously.

3-3-3. Capacity for outdoor unit

(1) Branching pipe

Model

CMY-Y62C-E

Branching connector

(2) Examples of System Construction (All models)

PIping method

Indoor units

CMY-Y64-C CMY-Y68 CMY-S65

Outdoor unit

NUMBER OF BRANCHING POINTS

2 4 8 5

Total capacity of

indoor units.

160

4 SPECIFICATIONS

PUMY-P125VMA

14.0

6.10

28.3-27.1-26.0 98 17

16.0

6.03

28.0-26.7-25.7 98 17

Single phase 220-230-240V 50Hz

Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>

1280 o 1020 o 350 (+30)

Crossover fin

EEV48FAM

Fully enclosed type o 1

Frequency converter start

3.5

Cooling 27-100% Heating 25-100%

1.9 (104Hz) —

1.4 (MEL32)

Propeller (direct) o 2

90(3,177)

60 o 2

Reverse cycle

—

High pressure pressure sensor (3.0MPa)

Thermal switch Thermal switch

Overheating, excessive current protection

127(280)

19.05

9.52

R407C o 8.5

Expansion valve

Item

Service Ref.

Unit

Standard performance

Heating Cooling

Rated Cooling capacity Rated power consumption Operating current Operating power factor Starting current Rated Heating capacity Rated power consumption Operating current Operating power factor Starting current Rated power supply

Type o charge amount Control method

External finish (Munsell colour-coded markings) Dimensions H o W o D (Note 1) Heat exchanger type

Defrost method Pressure gauge

Noise level Weight

Refrigerant pipe size

Refrigerant

Model Type o quantity Starting method Motor output Capacity control Daily cooling capacity Heater <crankcase> Refrigerating oil (Model) Type o quantity Airflow Motor output

High pressure protection Compressor protection Blower protection Frequency converter circuit

Compressor

Protection

devices

Gas Liquid

Fan

kW kW

A %

A kW kW

Legal tons

k/min(CFM)

kg(lbs)

[ mm [ mm

Note 1: External dimensions in parentheses indicate the dimensions of protruding parts. Note 2: Rating conditions (JIS B 8616) Cooling : Indoor : D.B. 27: W.B. 19:

: Outdoor : D.B. 35: W.B. 24:

Heating : Indoor : D.B. 20:

: Outdoor : D.B. 7: W.B. 6:

Item

Rated Cooling capacity Rated power consumption Operating current Operating power factor Starting current Rated Heating capacity Rated power consumption Operating current Operating power factor

Standard performance

External finish (Munsell colour-coded markings) Dimensions H o W o D (Note 1) Heat exchanger type

Fan

Defrost method Pressure gauge

Protection

Noise level Weight

Refrigerant pipe size

Refrigerant Note 1: External dimensions in parentheses indicate the dimensions of protruding parts.

Note 2: Rating conditions (JIS B 8616) Cooling : Indoor : D.B. 27: W.B. 19:

Heating Cooling

Starting current Rated power supply

Model Type o quantity Starting method Motor output Capacity control Daily cooling capacity

Compressor

Heater <crankcase> Refrigerating oil (Model) Type o quantity Airflow Motor output

High pressure protection Compressor protection Blower protection

devices

Frequency converter circuit

Type o charge amount Control method

: Outdoor : D.B. 35: W.B. 24:

Heating : Indoor : D.B. 20:

: Outdoor : D.B. 7: W.B. 6:

Service Ref.

Gas Liquid

Unit

kW kW

A %

A kW kW

Legal tons

k/min(CFM)

kg(lbs)

[ mm [ mm

3 phase 380-400-415V 50Hz

Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/1>

1280 o 1020 o 350 (+30)

Fully enclosed type o 1

Frequency converter start

Cooling 27-100% Heating 25-100%

Propeller (direct) o 2

High pressure pressure sensor (3.0MPa)

Overheating, excessive current protection

PUMY-P125YMA PUMY-P125YMA

14.0

5.95

9.6-9.1-8.8 94

8.0

16.0

5.58

9.2-8.8-8.5 92

8.0

Crossover fin

EEV48FAK

3.5

1.9 (104Hz) —

1.4 (MEL32)

90(3,177)

60 o 2

Reverse cycle

—

Thermal switch Thermal switch

127(280)

19.05

9.52

R407C o 8.5

Expansion valve

5 DATA

Model 20

Model Number for indoor unit

Model Capacity

Model 2528Model 3236Model 4045Model 5056Model 6371Model 7180Model 8090Model 100

112

Model 125

140

5-1. COOLING AND HEATING CAPACITYAND CHARACTERISTICS

5-1-1. Method for obtaining system cooling and heating capacity:

To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratings of all the indoor units connected to the outdoor unit (see table below), and then use this total to find the standard capacity with the help of the tables on page 11 to 14.

(1) Capacity of indoor unit

(2) Sample calculation

1 System assembled from indoor and outdoor unit (in this example the total capacity of the indoor units is greater than that of the outdoor unit)

• Outdoor unit PUMY-P125YMA

• Indoor unit PKFY-P25VAM-A o 2 , PLFY-P50VLMD-A o 2 2 According to the conditions in 1 , the total capacity of the indoor unit will be: 28 o 2 + 56 o 2 = 168

Capacity (kW)

Cooling

14.60

Heating

16.33

Outdoor unit power consumption (kW)

Cooling

6.04

Heating

5.14

Outdoor unit current (A)

Cooling

8.9

Heating

7.8

5-1-2. Method for obtaining the heating and cooling capacity of an indoor unit:

(1) The capacity of each indoor unit (kW) = the capacity A (or B ) o

(2) Sample calculation (using the system described above in 4-1-1. (2) ):

During cooling: During heating:

• The total model capacity of the indoor unit is:

2.8 o 2 + 5.6 o 2=16.8kW Therefore, the capacity of PKFY-P25VAM-A and PLFY-P50VLMD-A will be calculated as follows by using the formula in 4-1-2. (1):

Model 25=14.6 o = 2.43kW

Model 50=14.6 o = 4.87kW

2.8

16.8

5.6

16.8

total model capacity of all indoor units

• The total model capacity of indoor unit is:

3.2 o 2 + 6.3 o 2=19.0 Therefore, the capacity of PKFY-P25VAM-A and PLFYP50VLMD-A will be calculated as follows by using the formula in 4-1-2. (1):

Model 25=16.33 o = 2.75kW

Model 50=16.33 o = 5.41kW

model capacity

3.2

19.0

6.3

19.0

5-2. STANDARD CAPACITY DIAGRAM

Total capacity of

indoor units (kW)

Capacity (kW)

Power consumption (kW) Current (A)

Cooling

Heating

Cooling

Heating

Cooling

Heating

2.58

2.61

2.65

2.69

2.73

2.76

2.80

2.84

2.88

2.92

2.96

3.00

3.04

3.08

3.12

3.16

3.20

3.25

3.29

3.33

3.38

3.42

3.47

3.51

3.56

3.60

3.65

3.69

3.74

3.79

3.84

3.89

3.93

3.98

4.03

4.08

4.13

4.19

4.24

4.29

4.34

4.39

4.45

4.50

4.55

4.61

4.66

4.72

4.77

4.83

4.89

4.94

5.00

5.06

5.12

5.17

2.86

2.89

2.93

2.97

3.01

3.04

3.08

3.12

3.16

3.20

3.23

3.27

3.31

3.35

3.39

3.43

3.47

3.51

3.55

3.59

3.64

3.68

3.72

3.76

3.80

3.85

3.89

3.93

3.98

4.02

4.06

4.11

4.15

4.20

4.24

4.29

4.33

4.38

4.42

4.47

4.52

4.56

4.61

4.66

4.70

4.75

4.80

4.85

4.90

4.94

4.99

5.04

5.09

5.14

5.19

5.24

11.0

11.1

11.3

11.5

11.6

11.8

11.9

12.1

12.3

12.4

12.6

12.8

12.9

13.1

13.3

13.5

13.6

13.8

14.0

14.2

14.4

14.6

14.8

15.0

15.1

15.3

15.5

15.7

15.9

16.1

16.3

16.6

16.8

17.0

17.2

17.4

17.6

17.8

18.0

18.3

18.5

18.7

18.9

19.2

19.4

19.6

19.9

20.1

20.3

20.6

20.8

21.1

21.3

21.5

21.8

22.0

12.2

12.3

12.5

12.6

12.8

13.0

13.1

13.3

13.5

13.6

13.8

13.9

14.1

14.3

14.5

14.6

14.8

15.0

15.1

15.3

15.5

15.7

15.8

16.0

16.2

16.4

16.6

16.8

16.9

17.1

17.3

17.5

17.7

17.9

18.1

18.3

18.5

18.6

18.8

19.0

19.2

19.4

19.6

19.8

20.0

20.2

20.4

20.7

20.9

21.1

21.3

21.5

21.7

21.9

22.1

22.3

70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98

99 100 101 102 103 104 105 106 107 108 109

110 111 112 113 114 115 116 117 118

119 120 121 122 123 124 125

7.00

7.10

7.20

7.30

7.40

7.50

7.60

7.70

7.80

7.90

8.00

8.10

8.20

8.30

8.40

8.50

8.60

8.70

8.80

8.90

9.00

9.10

9.20

9.30

9.40

9.50

9.60

9.70

9.80

9.90

10.00

10.10

10.20

10.30

10.40

10.50

10.60

10.70

10.80

10.90

11.00

11.10

11.20

11.30

11.40

11.50

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

12.40

12.50

7.88

8.00

8.11

8.22

8.33

8.44

8.56

8.67

8.78

8.89

9.00

9.10

9.20

9.30

9.40

9.50

9.60

9.70

9.80

9.90

10.00

10.10

10.22

10.33

10.45

10.56

10.67

10.79

10.90

11.02

11.13

11.24

11.36

11.47

11.59

11.70

11.81

11.93

12.04

12.16

12.27

12.38

12.50

12.63

12.75

12.88

13.00

13.13

13.25

13.38

13.50

13.63

13.75

13.88

14.00

14.13

w Before calculating the sum of total capacity of indoor units, please convert

the valve into the kW model capacity following the formula on page 8.

240V, 50Hz

5-2-1. PUMY-P125VMA STANDARD CAPACITY DIAGRAM

5-2-2. PUMY-P125VMA STANDARD CAPACITY DIAGRAM

Total capacity of

indoor units (kW)

Capacity (kW)

Power consumption (kW) Current (A)

Cooling

Heating

Cooling

Heating

Cooling

Heating

5.23

5.29

5.35

5.41

5.47

5.53

5.59

5.66

5.72

5.78

5.84

5.91

5.97

6.04

6.10

6.11

6.12

6.13

6.14

6.15

6.16

6.17

6.18

6.19

6.20

6.21

6.22

6.23

6.24

5.29

5.34

5.39

5.45

5.50

5.55

5.60

5.65

5.71

5.76

5.81

5.87

5.92

5.97

6.03

6.02

6.00

5.98

5.96

5.95

5.93

5.91

5.90

5.88

5.86

5.85

5.83

5.81

5.79

5.78

5.76

5.74

5.73

5.71

5.69

5.68

5.66

5.64

5.62

5.61

5.59

5.57

5.56

5.54

5.52

5.51

5.49

5.47

5.46

5.44

5.42

5.40

5.39

5.37

5.35

5.34

5.32

22.3

22.5

22.8

23.1

23.3

23.6

23.8

24.1

24.4

24.6

24.9

25.2

25.4

25.7

26.0

26.1

26.2

26.3

26.4

26.5

26.6

22.6

22.8

23.0

23.2

23.4

23.6

23.9

24.1

24.3

24.5

24.8

25.0

25.2

25.4

25.7

25.6

25.5

25.4

25.3

25.2

25.1

25.0

24.9

24.8

24.7

24.6

24.5

24.4

24.3

24.2

24.1

24.0

23.9

23.8

23.7

23.6

23.5

23.4

23.3

23.2

23.1

23.0

22.9

22.8

22.7

126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182

12.60

12.70

12.80

12.90

13.00

13.10

13.20

13.30

13.40

13.50

13.60

13.70

13.80

13.90

14.00

14.02

14.04

14.06

14.08

14.10

14.12

14.15

14.17

14.19

14.21

14.23

14.25

14.27

14.30

14.32

14.34

14.36

14.38

14.40

14.42

14.45

14.47

14.49

14.51

14.53

14.55

14.57

14.60

14.62

14.64

14.66

14.68

14.70

14.72

14.75

14.77

14.79

14.81

14.83

14.85

14.87

14.89

14.25

14.38

14.50

14.63

14.75

14.88

15.00

15.13

15.25

15.38

15.50

15.63

15.75

15.88

16.00

16.01

16.02

16.03

16.04

16.06

16.07

16.08

16.09

16.10

16.12

16.13

16.14

16.15

16.16

16.17

16.19

16.20

16.21

16.22

16.23

16.25

16.26

16.27

16.28

16.29

16.31

16.32

16.33

16.34

16.35

16.36

16.38

16.39

16.40

16.41

16.42

16.44

16.45

16.46

16.47

16.48

16.50

w Before calculating the sum of total capacity of indoor units, please convert

the valve into the kW model capacity following the formula on page 8.

240V, 50Hzw

5-2-3. PUMY-P125YMA, PUMY-P125YMA1 STANDARD CAPACITY DIAGRAM

Total capacity of

indoor units (kW)

Capacity (kW)

Power consumption (kW) Current (A)

Cooling

Heating

Cooling

Heating

Cooling

Heating

2.47

2.50

2.54

2.57

2.61

2.64

2.68

2.72

2.76

2.80

2.83

2.87

2.91

2.95

2.99

3.03

3.07

3.12

3.16

3.20

3.24

3.29

3.33

3.37

3.42

3.46

3.51

3.55

3.60

3.65

3.69

3.74

3.79

3.84

3.88

3.93

3.98

4.03

4.08

4.13

4.18

4.24

4.29

4.34

4.39

4.44

4.50

4.55

4.61

4.66

4.72

4.77

4.83

4.88

4.94

5.00

2.63

2.66

2.70

2.73

2.77

2.80

2.84

2.87

2.91

2.94

2.98

3.02

3.05

3.09

3.13

3.16

3.20

3.24

3.27

3.31

3.35

3.39

3.43

3.47

3.51

3.55

3.59

3.62

3.67

3.71

3.75

3.79

3.83

3.87

3.91

3.95

3.99

4.04

4.08

4.12

4.16

4.21

4.25

4.30

4.34

4.38

4.43

4.47

4.52

4.56

4.61

4.65

4.70

4.74

4.79

4.84

3.8

3.9

4.0

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

5.0

5.1

5.2

5.3

5.4

5.5

5.6

5.7

5.8

5.9

6.0

6.1

6.2

6.3

6.4

6.5

6.6

6.7

6.8

6.9

7.0

7.1

7.2

7.3

7.4

7.5

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

5.0

5.1

5.2

5.3

5.4

5.5

5.6

5.7

5.8

5.9

6.0

6.1

6.2

6.3

6.4

6.5

6.6

6.7

6.8

6.9

7.0

7.1

7.2

7.3

7.4

70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98

99 100 101 102 103 104 105 106 107 108 109 110

111 112 113 114 115 116 117 118 119 120 121 122 123 124 125

7.00

7.10

7.20

7.30

7.40

7.50

7.60

7.70

7.80

7.90

8.00

8.10

8.20

8.30

8.40

8.50

8.60

8.70

8.80

8.90

9.00

9.10

9.20

9.30

9.40

9.50

9.60

9.70

9.80

9.90

10.00

10.10

10.20

10.30

10.40

10.50

10.60

10.70

10.80

10.90

11.00

11.10

11.20

11.30

11.40

11.50

11.60

11.70

11.80

11.90

12.00

12.10

12.20

12.30

12.40

12.50

7.88

8.00

8.11

8.22

8.33

8.44

8.56

8.67

8.78

8.89

9.00

9.10

9.20

9.30

9.40

9.50

9.60

9.70

9.80

9.90

10.00

10.10

10.22

10.33

10.45

10.56

10.67

10.79

10.90

11.02

11.13

11.24

11.36

11.47

11.59

11.70

11.81

11.93

12.04

12.16

12.27

12.38

12.50

12.63

12.75

12.88

13.00

13.13

13.25

13.38

13.50

13.63

13.75

13.88

14.00

14.13

w Before calculating the sum of total capacity of indoor units, please convert

the valve into the kW model capacity following the formula on page 8.

415V, 50Hz

5-2-4. PUMY-P125YMA, PUMY-P125YMA1 STANDARD CAPACITY DIAGRAM

Total capacity of

indoor units (kW)

Capacity (kW)

Power consumption (kW) Current (A)

Cooling

Heating

Cooling

Heating

Cooling

Heating

5.05

5.11

5.17

5.23

5.29

5.35

5.41

5.47

5.53

5.59

5.65

5.71

5.77

5.84

5.95

5.96

5.97

5.98

5.99

6.00

6.01

6.02

6.03

6.04

6.05

6.06

6.07

6.08

4.88

4.93

4.98

5.03

5.07

5.12

5.17

5.22

5.27

5.32

5.36

5.41

5.46

5.51

5.58

5.57

5.55

5.53

5.52

5.50

5.49

5.47

5.46

5.44

5.43

5.41

5.39

5.38

5.36

5.35

5.33

5.32

5.30

5.28

5.27

5.25

5.24

5.22

5.21

5.19

5.17

5.16

5.14

5.13

5.11

5.10

5.08

5.06

5.05

5.03

5.02

5.00

4.99

4.97

4.95

4.94

4.92

7.6

7.7

7.8

7.9

8.0

8.1

8.2

8.3

8.4

8.5

8.6

8.8

8.9

9.0

7.5

7.6

7.7

7.8

7.9

8.0

8.1

8.2

8.3

8.4

8.3

8.2

8.1

8.0

7.9

7.8

7.7

7.6

7.5

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

12.60

12.70

12.80

12.90

13.00

13.10

13.20

13.30

13.40

13.50

13.60

13.70

13.80

13.90

14.00

14.02

14.04

14.06

14.08

14.10

14.12

14.15

14.17

14.19

14.21

14.23

14.25

14.27

14.30

14.32

14.34

14.36

14.38

14.40

14.42

14.45

14.47

14.49

14.51

14.53

14.55

14.57

14.60

14.62

14.64

14.66

14.68

14.70

14.72

14.75

14.77

14.79

14.81

14.83

14.85

14.87

14.89

14.25

14.38

14.50

14.63

14.75

14.88

15.00

15.13

15.25

15.38

15.50

15.63

15.75

15.88

16.00

16.01

16.02

16.03

16.04

16.06

16.07

16.08

16.09

16.10

16.12

16.13

16.14

16.15

16.16

16.17

16.19

16.20

16.21

16.22

16.23

16.25

16.26

16.27

16.28

16.29

16.31

16.32

16.33

16.34

16.35

16.36

16.38

16.39

16.40

16.41

16.42

16.44

16.45

16.46

16.47

16.48

16.50

w Before calculating the sum of total capacity of indoor units, please convert

the valve into the kW model capacity following the formula on page 8.

415V, 50Hzw

5-3. CORRECTING COOLING AND HEATING CAPACITY

Service Ref. PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA1

Rated cooling capacity Rated heating capacity

Indoor D.B. 27°C / W.B. 19°C Outdoor D.B. 35°C

Indoor D.B. 20°C Outdoor D.B. 7°C / W.B. 6°C

0.4

-5 0 10 20 30 40 46

0.6

0.8

1.0

1.2

1.4

0.6

0.8

1.0

1.2

1.4

22 20 18 16

20 18 16

0.4

-12 -10 0 105-5 15

0.6

0.8

1.0

1.2

1.4

0.6

0.8

1.0

1.2

1.4

15 20

20 15

5-3-1. Correcting Changes in Air Conditions

(1)The performance curve charts (Figure 1, 2) show the rated capacity (total capacity) under the stated conditions when standard

length for piping (5m) is used. The rated power is derived from the capacity ratio and power ratio obtained for the indoor and outdoor intake temperatures at time 1.

• Standard conditions:

• Use the rated capacity and rated power values given in the characteristics table for each indoor unit.

• The capacity is the single value on the side of the outdoor unit; the capacity on the sides of each indoor unit must be added to obtain the total capacity.

(2)The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in (1) by the ratio between the

individual capacity at the rated time and the total capacity at the rated time.

Individual capacity under stated conditions = total capacity under the stated conditions o

(3)Capacity correction factor curve

individual capacity at the rated time

total capacity at the rated time

Figure 1. PUMY-P125VMA PUMY-P125YMA

PUMY-P125YMA

Cooling performance curve

Cooling Capacity (ratio)

Cooling Power consumption (ratio)

Outdoor <D.B. ::>

INDOOR <W.B. :>

Figure 2. PUMY-P125VMA PUMY-P125YMA

PUMY-P125YMA

Heating performance curve

Heating Capacity (ratio)

Heating Power consumption (ratio)

Outdoor <W.B. ::>

INDOOR <D.B. :>

5-3-2. Correcting Capacity for Changes in the Length of Refrigerant Piping

1.0

0.95

0.9 5 10152025303540455055

1.0

63 (50%) 94 (75%)

125 (100%) 163 (130%)

0.95

0.9

0.85

0.8 5 10152025303540455055

(1) During cooling, to obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total

in-use indoor capacity, first find the capacity ratio corresponding to the standard piping length (5m) from Figures 3 at first, and then multiply by the cooling capacity from Figure 1 to obtain the actual capacity.

(2) During heating, to find the equivalent piping length, first find the capacity ratio corresponding to standard piping length (5m)

from Figure 4, and then multiply by the heating capacity from Figure 2 to obtain the actual capacity.

(1) Cooling capacity correction factor Figure 3. PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA1

Cooling capacity correction curve

Total capacity for indoor unit

Cooling Capacity (ratio)

piping length (m)

(2) Heating capacity correction factor Figure 4. PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA1

Heating capacity correction curve

Heating Capacity (ratio)

piping length (m)

(3) Method for Obtaining the Equivalent Piping Length

Equivalent length for type 125 = (length of piping to farthest indoor unit) + (0.35 o number of bends in the piping) (m)

Length of piping to farthest indoor unit: type 125.....70m

5-3-3. Correction of Heating Capacity for Frost and Defrosting

If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction factor from the following table to obtain the actual heating capacity.

Correction factor diagram

Outdoor Intake temperature (W.B.°C)

Correction factor

1.0

0.98

0.89

0.88

-2

0.89

-4

0.9

-6

0.95

-8

0.95

-10

0.95

PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA

SPL(dB) LINE

NOTCH

Hi 54

NC-70

NC-60

NC-50

NC-40

NC-30

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

63 125 250 500 1000 2000 4000 8000

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

NC-20

MICROPHONE

6 OUTLINES AND DIMENSIONS

• OUTDOOR UNITS PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA1

Optional parts

(base branching

pipe) installation

hole

Terminal block for transmission

Terminal block for central control

Terminal block for power source

Liquid refrigerant pipe

connection {9.52 (3/8F)

Gas refrigerant-pipe

connection {19.05 (3/4F)

Knock out hole for right piping

Knock out holes for

power line 2-{27

Knock out holes for power line 2-{29

unit : mm

shaped notched holes

(standard bolt M10)

Bottom piping hole

Air intake

Air outlet

Handle for

Optional parts

installation hole

Rear air intake

Side air intake

Handle for moving

moving

Knock out hole for

front piping

Oval holes

Piping cover

Rear piping hole

(standard bolt M10)

Drain hole

(3-{33 hole)

when a piping cover is used for aesthetic reasons.

✻1...Indicates the dimensions of the cutoff valve connector.

✻2...Make sure that the panel can be easily removed for maintenance

7 WIRING DIAGRAM

PUMY-P125VMA

SYMBOL

TB1 Terminal Block(Power Supply)

Terminal Block(Transmission)TB3 4-Way Valve21S4

Terminal Block(Centralized Control)

TB7 CE

Smoothing Capacitor

C1,C2

Fan Motor Capacitor

DCL1~4

Reactor Resistor(Rush Current Protection)

RS ACTM Active Filter Module

Thermistor(Discharge Temperature Detection)

TH1 TH2

Thermistor (Low Pressure Saturated Temp.Detection)

TH5

Thermistor (Pipe Temp.Detection / Judging Defrost)

Thermistor(Outdoor Temp.Detection)

TH6 THHS A/B

Thermistor(Radiator Panel) A;ACTM,B;IGBT

63HS

High Pressuer Sensor

(Discharge Pressure Detection)

Thermal Switch(Compressor)49C

TO INDOOR UNIT CONNECTING WIRES DC 30V (Non-polar)

FOR CENTRALIZED CONTROL DC 30V (Non-polar)

NO FUSE BREAKER 32A

POWER SUPPLY ~ / N 220-230-240V

NAME

L N

SYMBOL

SV LEV(A) Expansion Valve

MF1,MF2

P.B. Power Circuit Board

U/V/W CN2~6 CNDC CNAF IGBT LED1

SC-S,R

SC-P1,P2 SC-N1,N2

*1 The address automatically becomes "100" if it is

TB3

set as "01~50".

BRN

TB7

ORN

TB1

L N

Magnetic Contactor52C

NAME

Solenoide Valve(Hot Gas Bypass)

Fan Motor(Inner Thermostat) Compressor(Inner Thermostat)

Connection Terminal(U/V/W Phase)

Connector Connector Connector Converter,Inverter Light Emitting Diode(Inverter Control Status)

Screw Type Terminal(L./N-Phase) Screw Type Terminal(DC Voltage) Screw Type Terminal(DC Voltage)

< M.B.>

TH2

TH5

TH6

TH1

63HS

LEV

65432 LEV-A (WHT)

CNS1

(RED)

CNS2

(YLW)

TH2

(WHT)

TH5

(GRN)

TH6

(RED)

TH1

(WHT)

1 3

63HS

(WHT)

SYMBOL

Noise Filter Circuit BoardN.F.

LI/LO

Connection Lead(L-Phase)

NI/NO

Connection Lead(N-Phase) Connection Terminal(Ground)

CNAC2

Connector Connector

CN5

Multi Circuit BoardM.B.

F1,F2

Fuse(6.3A)

SW1 Switch(Display Selection)

Switch(Function Selection)

SW2

Switch(Test Run)

SW3

Switch(Model Selection)

SW4

Switch(Function Selection)

SW5

SW5-1 Auto Change Over OFF;disabled ON;enabled

Switch(Function Selection)SW6 Switch(Unit Address Selection,1st digit)

SWU1

Switch(Unit Address Selection,2nd digit)

SWU2

49C

YLW YLW

49C(GRY)

SWU2 SWU1

OFF

12345678910

CN4

CNDC(PNK)

321

CN3S(WHT)

LED2LED1

(1st digit)(2nd digit)

SW1

OFF

3456782 1 3456782

SW2

CN2 (WHT)

131432 567

CN51

(WHT)

OFF

NAME

321

CN3D(WHT)

1 2 3 4 5

SW4

SW5

SW3

WHT WHT

MF2

(WHT)

3.12V

4.COMP. ON

5.Error

1234 1234

4321

SW6

OFF

1 3456782

SYMBOL

Connector(Multi system)

CNS1

Connector(Centralized Control)

CNS2

Connector

CN4

Connector(Centralized Control Power Supply)

CN40 CN41

Connector(For String Jumper Connector)

CN51

Connector(Connected for Option)

Compressor drive signal,Error signal

CN3D

Connector(Connected for Option) Auto Change Over Signal

CN3S

Connector(Connected for Option) Demand Signal

Relay(Magnetic Contactor)

X500

Relay(4-Way Valve)

X501

Relay(Solenoid Valve)

X502

Digital Indication LED

LED1,2

Operation Inspection Indication

RED

MF2

ORN

BLU

WHT

BLU

WHT

13 13

F.C

CN40(WHT)CN41(WHT)

(6.3A) (6.3A)

MF1

RED ORN

BLU

MF1

(WHT)

X500

21S4(GRN)

X501

X502

CNAC

(RED)

NAME

52C(ORG)

1 3

SV(BLK)

1 3

CH(BLU)

1 3

YLW YLW

BLU BLU

BLK BLK

52C

21S4

SV1

W V U

LED1

< P.B.>

BLK WHT RED

Always lit---SV121S4

CN5

(RED)

< N.F.>

NOTES: 1. Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.

2. Symbols used in wiring diagram above are. :Terminal block, :Connector, :Insertion tab.

3. Self-diagnosis function The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch(SW1) and LED1,2 (LED indication)found on the multi-controller of the outdoor unit. LED indication : Set all contacts of SW1 to OFF.

4. For the system utilizing R-converter units(PAC-SF29LB),the following functions are not available. SW3;TEST RUN SW5-1;AUTO CHANGE OVER CN3D;AUTO CHANGE OVER(external singnal)

5. The input for CN3D 1-2(AUTO CHANGE OVER EXTERNAL SIGNEL)is as follows. Short;heating Open;Cooling(It differs from Service ref.PUMY-P125YMA)

•During normal operation The LED indicates the drive state of the controller in the outdoor unit.

Bit

Indication

•When fault requiring inspection has occurred The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred.

CNAC2 (RED)

1 876543

Compressor operated

52C

THHS_A

THHS_B

52C

2 1

CN4

(WHT)

CN3

(WHT)

CN6

(WHT)

CN5

(RED)

SCR-N1

SCR-P1

IGBT

CNDC

(PNK)

51234

CNAF (WHT)

743215

66 CN2 (WHT)

SCR-S

SCR-R

SCR-P2 SCR-N2

652341

N1 N2

ACTM

(Example) When the compressor and SV1 are turned during cooling operation.

78563421

DCL3DCL4

DCL1DCL2

PUMY-P125YMA

8 7

RD2

123 CN3S (RED)

CN3S CONNECTOR <DEMAND SIGNAL>

operated

NOTES : 1. Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.

2. Symbols used in wiring diagram above are. : Terminal block, : Connector, :Insertion tab.

3. Self-diagnosis function The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch (SW1) and LD1(LED indication) found on the multi-controller of the outdoor unit. LED indication : Set all contacts of SW1 to OFF.

634

(Example) When the compressor and SV1 are turned during cooling operation.

Always lit---SV121S4

1 876543

52C

Compressor

Indication

Bit

•During normal operation The LED indicates the drive state of the controller in the outdoor unit.

•When fault requiring inspection has occurred The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred.

NO FUSE BREAKER 25A

L1 L2 L3

(WHT)

CN3D

(WHT)

CN51

(WHT)

CN41

(WHT)

CN40

5321432143214321

YLW

CB2

CB1

CNR

(WHT)

CNR

(WHT)

(RED)

CNA

(YLW)

49C

(RED)

CN1

FUSE1 (6.3A)

FUSE2 (2A)

SLEV

5764

49C

YLW

31 1234567

1234567

123671234561236

123671236

CN4CN3CN2

(YLW)(YLW) (WHT)

(YLW)(RED) (YLW) (WHT)

24321 12345678

109876543212876543

SW3 SW5

OFF

SW4

SW1 SW2

OFF

ON OFF

(YLW)

ACCT

654321

132

CN1

63HS

654132123113 2121

THHS

TH1TH2TH5TH6

63HS

THHS

TH2TH6 TH5 TH1

(BLK) (WHT) (GRN)(GRN) (WHT) (WHT)

SLEV

(WHT)

BLU

LO1 LO2 LO3

LI3

LI2

LI1

(RED)

CNA

GRN

YLW

WHT

BLK

RS1

RB2 RB1

RD1

BLK

RED

BLU

WHT

GRN

C03

C02C01

NP1PN1

3 5 6 8

3568

+ –

IPM

RED WHT BLK

31 13

(BLU) 52C

X71

YLW

52C

(GRN)

21S4

X72

BLU

21S4

SV1

BLK

(BLK) SV1

(WHT) MF2

(WHT) MF1

MF1

WHT

BLU

WHT

BLURED

ORN

RED

ORN

BLU

WHT

BLU

52C

BLU

BLK

RED

M1 M2

LD1

SWU1

(1st digit)

SWU2

(2nd digit)(3rd digit)

SWU3

CNS1

(RED)

CNS2

(YLW)

F.C

GRN/YLW

ZNR

–

BLU

BLK

FOR CENTRALIZED CONTROL DC 30V (Non-polar)

WHT

BLK

WHT

RED

WHT

ORN

BRN

GROUND

TO INDOOR UNIT CONNECTING WIRES DC 30V (Non-polar)

POWER SUPPLY 3N~ 380/220-415/240V 50Hz

X73

TB3

TB7

TB1

MF2

DCL

<PIPE TEMPERATURE DETECTION

• JUDGING DEFROST>

THERMISTOR

SYMBOL

TERMINAL BLOCK <TRANSMISSION>

SWITCH <UNIT ADDRESS SELECTION,3RD DIGIT>

SWITCH <UNIT ADDRESS SELECTION,2ND DIGIT>

SWITCH <UNIT ADDRESS SELECTION,1ST DIGIT>

SWITCH <FUNCTION SELECTION>

SWITCH <MODEL SELECTION>

SWITCH <TEST RUN>

THERMISTOR

NAME

SWITCH <FUNCTION SELECTION>

SWITCH <DISPLAY SELECTION>

TERMINAL BLOCK <CENTRALIZED CONTROL>

SOLENOID VALVE <HOT GAS BYPASS>

TERMINAL BLOCK <POWER SUPPLY>

THERMISTOR

SYMBOL

SMOOTHING CAPACITOR

C03 CAPACITOR <FILTER>

C01,C02

CONNECTOR <DISCHARGE CIRCUIT, POWER SUPPLY>

CNR

RESISTOR <RUSH CURRENT PROTECT>

RS1

RESISTOR <DISCHARGE>

RB1,RB2

RESISTOR <VOLTAGE BALANCE ADJUSTMENT>

RD1,RD2

RELAYX

X73 RELAY <SOLENOID VALVE>

X72 RELAY <4-WAY VALVE>

C1,C2 FAN MOTOR CAPACITOR

SWU3

SWU2

SWU1

SW5

SW4

SW3

THHS

INTELLIGENT POWER MODULEIPM

FAN CONTROLF.C

CONNECTOR <CENTRALIZED CONTROL POWER SUPPLY>

CN40

CONNECTOR <FOR STORING JUMPER CONNECTOR>

CN41

CONNECTOR <COMPRESSOR DRIVE SIGNAL OUTPUT>

CN51

CONNECTOR <INVERTER SIGNAL 5V>

CN4

CONNECTOR <POWER SUPPLY 30V,12V,5V>

CN3

CONNECTOR <POWER SYNC SIGNAL, PROTECTION>

CN2

CONNECTOR <CONTROLLER DRIVE CONTROL>

CN1

CONNECTOR <POWER SUPPLY>CNA

CONNECTOR <CURRENT DETECTION>

ACCT

NAME

SYMBOL

NAME

SW2

SW1

CONNECTOR <AUTO CHANGE OVER SIGNAL>

CN3D

REACTOR

THERMAL SWITCH <COMPRESSOR>

TH2

TH5

TH6

63HS

52C

21S4

TH1

SV1

SLEV

MF1,MF2

LD1 X71

CNS1 CNS2

ZNR

FUSE2

TB7

TB3

TB1

DCL

FUSE1

49C

CONNECTOR <MULTI SYSTEM> CONNECTOR <CENTRALIZED CONTROL>

FUSE (2A)

DIGITAL INDICATION LED <OPERATION INSPECTION INDICATION>

FAN MOTOR <INNER THERMOSTAT>

EXPANSION VALVE

HIGH PRESSURE SENSOR <DISCHARGE PRESSURE DETECTION>

MAGNETIC CONTACTOR

4-WAY VALVE

RELAY <MAGNETIC CONTACTOR>

VARISTOR

FUSE (6.3A)

COMPRESSOR <INNER THERMOSTAT>

NOISE FILTER

THERMISTOR

CB1,CB2DMSMOOTHING CAPACITOR

DIODE MODULE

NAME

SYMBOL

PUMY-P125YMA1

RD2

123

CN3S

(WHT)

CN3S

CONNECTOR <DEMAND SIGNAL>

operated

NOTES: 1.Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.

2.Symbols used in wiring diagram above are. :Terminal block, :Connector, :Insertion tab.

3.Self-diagnosis function The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch(SW1) and LD1(LED indication) found on the multi-controller of the outdoor unit. LED indication : Set all contacts of SW1 to OFF.

4.For the system utilizing R-converter units(PAC-SF29LB), the following functions are not available. SW3 : TEST RUN SW5-1 : AUTO CHANGE OVER CN3D : AUTO CHANGE OVER(external singnal)

5.The input for CN3D 1-2(AUTO CHANGE OVER EXTERNAL SIGNEL)is as follows. Short : heating Open : Cooling(It differs from Service ref. PUMY-P125YMA)

78563421

(Example) When the compressor and SV1 are turned during cooling operation.

Always lit---SV121S4

1 876543

52C

Compressor

Indication

Bit

• During normal operation The LED indicates the drive state of the controller in the outdoor unit.

• When fault requiring inspection has occurred The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred.

50Hz

380/220-415/240V

3N~

NO FUSE BREAKER 25A

L1 L2 L3

(WHT)

CN3D

(WHT)

CN51

(WHT)

CN41

(WHT)

CN40

5321432143214321

YLW

CB2

CB1

CNR

(WHT)

CNR

(WHT)(RED)

CNA

(YLW)

49C

(RED)

CN1

FUSE1 (6.3A)

FUSE2 (2A)

SLEV

5764

49C

YLW

31 1234567

1234567

123671234561236

123671236

CN4CN3CN2

(YLW)(YLW) (WHT)

(YLW)(RED) (YLW) (WHT)

24321 12345678

109876543212876543

SW3 SW5

OFF

SW4

SW1 SW2

OFF

ON OFF

(YLW)

ACCT

654321

132

CN1

63HS

654132123113 2121

THHS

TH1TH2TH5TH6

63HS

THHS

TH2TH6 TH5 TH1

(BLK) (WHT) (GRN)(GRN) (WHT) (WHT)

SLEV

(WHT)

BLU

–

LO1 LO2 LO3

LI3

LI2

LI1

(RED)

31 CNA

GRN

YLW

WHT

BLK

RS1

RB2 RB1

RD1

BLK

RED

BLU

WHT

GRN

C03

C02C01

NP1PN1

3 5 6 8

3568

IPM

RED WHT BLK

31 13

(BLU) 52C

X71

YLW

52C

(GRN)

21S4

X72

BLU

21S4

SV1

BLK

(BLK)

SV1

(WHT)

MF2

(WHT)

MF1

WHT

BLU

WHT

BLURED

ORN

RED

ORN

BLU

WHT

BLU

52C

BLU

BLK

RED

LD1

SWU1

(1st digit)

SWU2

(2nd digit)(3rd digit)

SWU3

CNS1

(RED)

CNS2

(YLW)

F.C

GRN/YLW

ZNR

BLU

BLK

FOR CENTRALIZED CONTROL DC 30V (Non-polar)

WHT

BLK

WHT

RED

WHT

ORN

BRN

GROUND

TO INDOOR UNIT CONNECTING WIRES DC 30V (Non-polar)

POWER SUPPLY

X73

TB3

TB7

TB1

MF2

DCL

THERMISTOR

TERMINAL BLOCK <TRANSMISSION>

SWITCH <UNIT ADDRESS SELECTION,3RD DIGIT>

SWITCH <UNIT ADDRESS SELECTION,2ND DIGIT>

SWITCH <UNIT ADDRESS SELECTION,1ST DIGIT>

SWITCH <FUNCTION SELECTION> SW5-1 AUTO CHANGE OVER OFF : disabled ON : enabled

SWITCH <MODEL SELECTION>

SWITCH <TEST RUN>

THERMISTOR

NAME

SWITCH <FUNCTION SELECTION>

SWITCH <DISPLAY SELECTION>

TERMINAL BLOCK <CENTRALIZED CONTROL>

SOLENOID VALVE <HOT GAS BYPASS>

TERMINAL BLOCK <POWER SUPPLY>

THERMISTOR

SMOOTHING CAPACITOR

C03 CAPACITOR <FILTER>

C01,C02

CONNECTOR <DISCHARGE CIRCUIT,POWER SUPPLY>

CNR

RESISTOR <RUSH CURRENT PROTECT>

RS1

RESISTOR <DISCHARGE>

RB1,RB2

RESISTOR <VOLTAGE BALANCE ADJUSTMENT>

RD1,RD2

RELAY

X73

RELAY <SOLENOID VALVE>

X72

RELAY <4-WAY VALVE>

C1,C2 FAN MOTOR CAPACITOR

SWU3

SWU2

SWU1

SW5

SW4

SW3

THHS

INTELLIGENT POWER MODULE

IPM

FAN CONTROLF.C

CONNECTOR <CENTRALIZED CONTROL POWER SUPPLY>

CN40

CONNECTOR <FOR STORING JUMPER CONNECTOR>

CN41

CONNECTOR <COMPRESSOR DRIVE SIGNAL OUTPUT>

CN51

CONNECTOR <INVERTER SIGNAL 5V>

CN4

CONNECTOR <POWER SUPPLY 30V,12V,5V>

CN3

CONNECTOR <POWER SYNC SIGNAL,PROTECTION>

CN2

CONNECTOR <CONTROLLER DRIVE CONTROL>

CN1

CONNECTOR <POWER SUPPLY>

CNA

CONNECTOR <CURRENT DETECTION>

ACCT

NAMENAME

SW2

SW1

CONNECTOR <AUTO CHANGE OVER SIGNAL>

CN3D

REACTOR

THERMAL SWITCH <COMPRESSOR>

TH2

TH5

TH6

63HS

52C

21S4

TH1

SV1

SLEV

MF1,MF2

LD1

X71

CNS1 CNS2

ZNR

FUSE2

TB7

TB3

TB1

DCL

FUSE1

49C

CONNECTOR <MULTI SYSTEM> CONNECTOR <CENTRALIZED CONTROL>

FUSE (2A)

DIGITAL INDICATION LED <OPERATION INSPECTION INDICATION>

FAN MOTOR <INNER THERMOSTAT>

EXPANSION VALVE

HIGH PRESSURE SENSOR <DISCHARGE PRESSURE DETECTION>

MAGNETIC CONTACTOR

4-WAY VALVE

RELAY <MAGNETIC CONTACTOR>

VARISTOR

FUSE (6.3A)

COMPRESSOR <INNER THERMOSTAT>

NOISE FILTER

THERMISTOR

CB1,CB2

DMSMOOTHING CAPACITOR DIODE MODULE

NAME

SYMBOL SYMBOL SYMBOL SYMBOL

051

056

001

010

101

002

102 104 154

1111

009

008

003

007

006

004

005

1 A transmission wire must be

connected to each refrigerant

system (outdoor and indoor).

2 Set addresses:

Outdoor unit ..............051-100

Indoor unit .................001-050

Remote controller .....101-200

3 PUMY-P125VMA has no SW 3(3rd digit).

The address automatically become

"100" if it is set as "01~50".

Remote

controller

Remote

controller

Remote

controller

Remote

controller

105

Remote

controller

157

Remote

controller

107

Remote

controller

For centralized

management

For remote

controller

Address SW Address SW Address SW Address SW Address SW

Piping

Outdoor unit

Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit

Indoor unitIndoor unitIndoor unitIndoor unitIndoor unit

Address SW Address SW Address SW Address SW Address SW

Address SWAddress SWAddress SWAddress SWAddress SW

Address SWAddress SW

For centralized

management

For remote

controller

Transmission wire

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

8-1. TRANSMISSION SYSTEM SETUP

8-2. REFRIGERANT SYSTEM DIAGRAM

Flare

Strainer #100

Strainer (#100)

Strainer

Strainer #100

(Refrigerant flow)

Cooling Heating

#50

Strainer

Compressor (MC)

Expansion valve (LEV(A), SLEV)

Accumulator

Overcooling heat exchanger

Outdoor heat exchanger

Service port

Thermistor TH2 (Saturation temperature of suction pressure)

Capillary tube 2

Capillary tube 4

Dryer

Capillary tube 3

Oil separator

Check valve (low pressure)

Thermistor THHS (Radiator panel temperature sensor)

W Only PUMY-P125VMA Thermistor THHS-A Thermistor THHS-B

Thermistor TH6 (outdoor air temperature sensor)

4-way valve

High-pressure sensor discharge pressure sensor (63HS)

Capillary tube 1

Check valve (High pressure)

Electromagnetic valve (SV1)

Thermistor TH5 (piping temperature monitoring and determination)

Thermistor TH1 (discharge temperature sensor)

Outdoor unit

PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA

Refrigerant Piping Specifications (dimensions of flared connector)

Capacity

20 , 25 , 32 , 40

Indoor unit

50 , 63 , 71, 80

100 , 125

Outdoor unit

PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA

Capillary tube 1 (for return of oil from oil separator)

{2.5 O {0.6 O L500

125

Concerning the Compressor

This system has a scroll compressor. This compressor uses a low pressure shell that typically has a temperature in the range 30-80°C. In addition, compressor wiring should be in the direction of rotation to the right. Wire colors are red (U), white(V), black (W), yellow and yellow (thermal switch).

Item

Capillary tube 2 (for Evaporating

temperature detection)

Liquid piping Gas piping

{6.35 <1/4”> {9.52 <3/8”> {9.52 <3/8”> {9.52 <3/8”>

Capillary tube 3 (for maintaining equilibrium between upper and lower coils)

{12.7 <1/2”> {15.88 <5/8”> {19.05 <3/4”> {19.05 <3/4”>

({4 O {3.0 O L200) O 2{2.5 O {0.6 O L500

Capillary tube 4 (for SV1)

{4 O {2.4 O L360

8-3. SYSTEM CONTROL

For indoor-outdoor transmission wire

Remote control wire

indoor-outdoor trnasmission cable

2 remote controllers

Group operation (maximum 16 indoor units)

Outdoor unit

Indoor unit

Indoor unit Indoor unit

Remote controller network

Indoor unit Indoor unit

NR NR NR

8-3-1. Operating a Single Refrigerant System

When operating either alone or as part of a group, a M-NET remote controller (NR) may be used to control a single refrigerant system that does not overlap with any other system.

Using a M-NET remote controller (NR)

✽ Address setting must be performed. ✽ The NR wire and indoor and outdoor transmission wires must be a non-polar two wire cable. ✽ One NR may be connected to a maximum of 16 indoor unit. ✽ Two NR units may be used to perform control tasks (the second one pressed will have priority if two are pressed

simultaneously).

✽ For the system utilizing R-Converter units (PAC-SF29LB), the following systems are not available. Group operation

system, centralized controller, group remote controller, etc. (See the installation manual of R-Converter units.)

✽ If the user plans to install multiple refrigerant

systems and a centralized controller in the future, it is strongly suggested that a NR be used.

8-3-2. System Controller (SC) to Perform Centralized Control

Transmission wire for centralized control

For transmission wire

PAC-SC33KUA PAC-SC34KUA

Outdoor

unit

Indoor unit

Indoor unit Indoor unit Indoor unit

Remote controller network

Remote control

wire

Indoor • outdoor transmission wire (Shielded wire)

SC: Centralized controller, linked system control board, group remote controller, etc.

A : M-NET or MA remote controller

(Coexistence of M-NET remote controller and MA remote controller is not admitted in the same system.)

Indoor unit

Indoor unitIndoor unitIndoor unitIndoor unitIndoor unit

Power supply installation

System controller

Outdoor

unit

Indoor • outdoor transmission wire (Shielded wire)

The following diagram shows the use of system controller (SC) to control a system that includes the multiple outdoor unit.

Note 1) The NR, SC, indoor and outdoor unit all require address settings.

Indoor unit

Outdoor unit

M-NET R/C (Main)

M-NET R/C (Sub)

MA Remote controller

The address automatically becomes “100” if it is set as “01~50”. (PUMY-P125VMA)

Linked settings must be made within a group.

The lowest address of an indoor unit within a refrigerant system is +50.

The lowest address of an indoor unit within a group is +100.

The address of the main remote controller is +50.

Unnecessary address setting (Necessary main/sub setting)

1 ~ 50

51 ~ 100

101 ~ 150 151 ~ 200

0 or 201 ~ 250

—

2) Indoor unit that may be connected with an SC are shown as follows.

Centralized controller Multi-unit controller board Group controller

3) There may be a maximum of two controllers when a group has 16 indoor units or less.

4) The transmission wire must have a power supply when an SC is used. Please connect the power supply for the transmission wire to the centralized controller transmission wire.

SC with 2 units or less SC with 3 to 5 units

5) Use a shielded wire (at least 1.25mm

50 group /50 units 24 group /50 units 8 group /16 units

Power supply for transmission wire PAC-SC33KU Power supply for transmission wire PAC-SC34KU

)for the indoor, outdoor, and centralized controller transmission wires. In addition, all shielded wires in a system must be grounded at one point. If the length of the remote control wire exceeds 10m, use an insulated wire for the extra portion.

8-3-3. Example for the System

(051)

M1 M2

TB512TB15

TB15

(001)

M1 M2

TB5

(002)

M1 M2 SM1 M2 S

TB3 TB7

r1 L3

TB6

(101)

TB6

(102)

(051)

M1 M2 S

TB5

(001)

TB5

(002)

TB6

(101)

TB6

(151)

TB6

(102)

TB6

(152)

M1 M2 S

M1 M2 SM1 M2 S

TB3 TB7

TB15

(051)

M1 M2 S

TB5

(001)

M1 M2 S

TB5

(002)

TB6

(101)

M1 M2 SM1 M2 S

TB3 TB7

Main

Sub

TB15

• Example for wiring control cables, wiring method and address setting, permissible lengths, and the prohibited items are listed in the standard system with detailed explanation. The explanation for the system in this section : Use one single outdoor unit and multiple outdoor units for M-NET remote

control system. Use one single outdoor unit and multiple indoor units in the multiple outdoor units for the M-NET remote control system.

A. Example of a M-NET remote controller system (address setting is necessary.)

Example of wiring control cables Wiring Method and Address Setting

1. Standard operation

a. Use feed wiring to connect terminals M1 and M2 on

transmission cable block (TB3) for the outdoor unit (OC) to terminals M1 and M2 on the transmission cable block (TB5) of each indoor unit (IC). Use non-polarized two wire.

b. Connect terminals M1 and M2 on transmission

cable terminal block (TB5) for each indoor unit with the terminal block (TB6) for the remote controller (NR).

c. Set the address setting switch as shown below.

• One remote controller for each indoor unit.

• Inside ( ) Address: There is no need for setting the 100 position on the remote controller.

2. Operation using two remote controllers

• Using two remote controllers for each indoor unit.

Main

3. Group operation

• Multiple indoor units operated together by one remote controller

Combinations of 1through 3 above are possible.

Sub

Main

Sub

Unit

Indoor unit (IC)

Outdoor unit

(OC)

Remote

controller (NR)

Range

001 to 050 051 to 100 101 to 150

Setting Method

Use the most recent address of all the indoor unit plus 50. Indoor unit address plus

100.

a. Same as above. b. Same as above. c. Set address switch as shown below.

Unit

Indoor Unit (IC)

Outdoor unit

(OC)

Main Remote

Controller (NR)

Sub Remote

Controller (NR)

Range

001 to 050 051 to 100

101 to 150 151 to 200

Setting Method

Use the most recent address of all the indoor units plus 50. Indoor unit address plus

100. Indoor unit address plus

150.

a. Same as above. b. Connect terminals M1 and M2 on transmission cable

terminal block (TB5) of the IC main unit with the most most recent address within the same indoor unit (IC) group to terminal block (TB6) on the remote controller.

c. Set the address setting switch as shown below.

Unit

IC (Main)

IC (Sub)

Outdoor Unit

Main Remote

Controller

Sub Remote

Controller

Range

001 to 050

051 to 100 101 to 150 151 to 200

Use the most recent address within the same group of indoor units. Use an address, other than that of the IC (Main) from among the units within the same group of indoor units. This must be in sequence with the IC (Main). Use the most recent address of all the indoor units plus 50. Set at an IC (Main) address within the same group plus 100. Set at an IC (Main) address within the same group plus 150.

Setting Method

d. Use the indoor unit (IC) within the group with the most functions as the IC (Main) unit.

—

• Name, Symbol and the Maximum Remote controller Units for Connection

Main Sub

(051)

M1 M2 S

TB5

(001)

M1 M2 S

TB5

(002)

TB6

(102)

M1 M2 SM1 M2 S

TB3 TB7

TB15

M1 M2

SM1 M2

TB5

(001)

TB5

(002)

Main Sub Main Sub

TB6

(101)

TB6

(151)

TB6

(102)

TB6

(104)

TB6

(103)

M1 M2 SM1 M2 S

TB3 TB7

(051)

TB15

M1 M2 S1

2M1 M2

TB5

TB6

TB15

(001)

TB5

(002)

M1 M2 SM1 M2 S

TB3 TB7

(051)

MANR

(101)

Name

Outdoor unit

Indoor unit

M-NET remote

controller

Symbol

Maximum units for connection

One OC unit can be connect to 1-8 IC units Maximum two NR for one indoor unit, Maximum 16 NR for one OC

Permissible Lengths Prohibited items

Longest transmission cable length (1.25 mm

1 + L2, L2 + L3, L3 + L1 [ 200m

)

Remote controller cable length

1. If 0.5 to 0.75 mm

R1, R2 [10m

2. If the length exceeds 10 meters, the exceeding section should be 1.25 mm

and that section should be a value within the total extension length of the transmission cable and maximum transmission cable

length. (L

Same as above

• M-NET remote controller(NR) and MA remote controller(MA) cannot be used together.

• Do not connect anything with TB15 of indoor unit(IC).

• Use the indoor unit(IC) address plus 150 as the sub remote controller address. In this case, it should be 152.

• Three or more remote controller (NR) cannot be connected to one indoor unit.

Same as above

• The remote controller address is the indoor

unit main address plus

100. In this case, it should be 101.

B. Example of a group operation system with two or more outdoor units and a M-NET remote controller.

M1 M2 S

TB7

TB3

(051)

M1 M2 S

TB512TB15

TB15

(001)

M1 M2 S

TB5

(002)

M1 M2 S

TB5

(004)

M1 M2 S

TB5

(003)

M1 M2 S

TB5

(005)

M1 M2 S

TB5

(007)

M1 M2 S

TB5

(006)

L2 L3 L4

L5 L6 L7

TB6

(101)

TB6

(105)

TB6

(103)

TB6

(155)

CN40

Between terminal blocks

M1 M2 S

TB7

TB3

(052)

Shielded wire

(Shielding wires and address settings are necessary.)

Examples of Transmission Cable WiringWiring Method Address Settings

Group 3

Group 5Group 1

Sub remote controller

( ) Address

a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well

for all OC-OC, and IC-IC wiring intervals.

b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block

(TB3) of each outdoor unit (OC) to terminals M1 and M2 on the terminal S on the transmission cable block of the indoor unit (IC).

c. Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (IC) that has the most

recent address within the same group to the terminal block (TB6) on the remote controller (NR).

d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor

unit (OC).

e. Use the grounded wire to connect the S-terminal on the transmission terminal of the outdoor unit (OC) and the

grounded terminal for the electrical components box. f. On one outdoor unit only, change the jumper connector on the control panel from CN41 to CN40. g. Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which

the jumper connector was inserted into CN40 in Step above to the ground terminal ; in the electrical component

box. h. Set the address setting switch as follows.

Main Remote Controller

Sub Remote Controller

Unit

IC (Main)

IC (Sub)

Outdoor Unit

001 to 050 001 to 050 051 to 100

101 to 150 151 to 200

i. The group setting operations among the multiple indoor units is done by the remote controller (NR) after the electrical

power has been turned on.

Range

Use the most recent address within the same group of indoor units. Use an address, other than that of the IC (Main) from among the units within

the same group of indoor units. This must be in sequence with the IC (Main).

Setting Method

Use the most recent address of all the indoor units plus 50. Set at an IC (Main) address within the same group plus 100. Set at an IC (Main) address within the same group plus 150.

• Name, Symbol, and the Maximum Units for Connection

M1 M2 S

TB7

(051)

M1 M2 S

TB512TB15

TB15

Shielded wire

Remote controller

(001)

M1 M2 S

TB5

(002)

M1 M2 S

TB5

(004)

M1 M2 S

TB5

(003)

M1 M2 S

TB5

(005)

M1 M2 S

TB5

(007)

M1 M2 S

TB5

(006)

TB6

(101)

TB6

(105)

TB6

(103)

TB6

(155)

CN40

M1 M2 S

TB7

(052)

M1 M2 S

TB3

M1 M2 S

TB3

TB15

• Max length via outdoor units : L1+L2+L3+L4+L5+L6+L7+L9 L1+L2+L3+L4+L5+L6+L8+L9 [ 500 meters (1.25mm2)

• Max transmission cable length : L

• Remote controller cable length : R

1+L2+L3+L4, L5+L6+L7, L5+L6+L8, L7+L8 [ 200 meters (1.25mm

1,R2, R3, R4 [ 10 meters (0.5 to 0.75mm

If the length exceeds 10 meters, use a 1.25 mm

tion (L

Permissible Length

8) should be included in the calculation of the maximum length and overall length.

)

shielded wire. The length of this sec-

Prohibited items

Group 3

Group 5Group 1

• The terminal S on the terminal block (TB7) for the central control panel should be connected to the ground terminal ; of the electric components box for one outdoor unit only.

• Never connect together the terminal blocks (TB5) for transmission wires for indoor units (IC) that have been connected to different outdoor units (OC).

• Set all addresses to ensure that they are not overlapped.

• It cannot be connected M-NET remote controller and MA remote controller with indoor unit of the same group using

together.

C. Example of a MA remote controller system (address setting is not necessary.)

(000)

M1 M2

S 21 21

TB5 TB15 TB15

(000)

M1 M2

TB5

(000)

M1 M2 SM1 M2 S

TB3 TB7

(000)

M1 M2 12 12S

TB5 TB15 TB15

(000)

TB5

(000)

MA MA

M1 M2 S

M1 M2 SM1 M2 S

TB3 TB7

MA MA

(000)

M1 M2 S 1 2

TB5 TB15

TB15

(000)

M1 M2 S

TB5

(000)

M1 M2 SM1 M2 S

TB3 TB7

NOTE : In the case of same group operation, need to set the address that is only main indoor unit.

Example of wiring control cables Wiring Method and Address Setting

1. Standard operation

a. Use feed wiring to connect terminals M1 and M2 on

transmission cable block (TB3) for the outdoor unit (OC) to terminals M1 and M2 on the transmission cable block (TB5) of each indoor unit (IC). Use non-polarized two wire.

b. Connect terminals 1 and 2 on transmission cable

terminal block (TB15) for each indoor unit with the terminal block for the MA remote controller (MA).

• One remote controller for each indoor unit.

• Inside ( ) Address: There is no need for setting the 100 position on the remote controller.

2. Operation using two remote controllers

a. The same as above. b. The same as above. c. In the case of using tow remote controllers, connect

terminals 1 and 2 on transmission cable terminal block (TB15) for each indoor unit with the terminal block for tow remote controllers.

· Set the sub remote controller position for one of MA remote controller’s main switch. Refer to the installation manual of MA remote controller

• Using two remote controllers for each indoor unit.

3. Group operation

• Multiple indoor units operated together by one remote controller

Combinations of 1through 3 above are possible.

a. The same as above. b. The same as above. c. Connect terminals 1 and 2 on transmission cable ter-

minal block (TB15) of each indoor unit, which is doing group operation with the terminal block the MA remote controller. Use non-polarized tow wire.

d. In the case of same group operation, need to set the

address that is only main indoor unit. Please set the address of the indoor unit with the most functions in the same group in the number that 01-50 is young.

Permissible Lengths Prohibited items

M1 M2 S1

2M1 M2

TB5 TB15

TB15

(001)

TB5

(002)

M1 M2 SM1 M2 S

TB3 TB7

(051)

MAMA

M1 M2 S1

2M1 M2

TB5 TB15

TB15

(000)

TB5

(000)

M1 M2 SM1 M2 S

TB3 TB7

(000)

MA MAMAMAMA

M1 M2 S1

2M1 M2

TB5 TB15

TB15

(000)

TB5

(000)

M1 M2 SM1 M2 S

TB3 TB7

(000)

MAMANR

Longest transmission cable length

1 + L2 [ 200m (1.25 mm

)

MA remote controller cable length

1, R2 [ 200m (0.3 ~ 1.25 mm

Longest transmission cable length The same as above. MA remote controller cable length

3 +R4, R5 +R6 [ 200m

(0.3 ~ 1.25 mm

)

The MA remote controller and the M-NET remote controller cannot be used together with the indoor unit

)

the of the same group.

Three MA remote controller or more cannot be connect with the indoor unit of the same group.

Longest transmission cable length The same as above. MA remote controller cable length

7 +R8 [ 200m (0.3 ~ 1.25 mm

)

The second MA remote control is connected with the terminal block(TB15) for the MA remote control of the same indoor unit(IC) as the first remote control.

D. Example of a group operation with two or more outdoor units and a MA remote controller.

M1 M2 S

TB7

TB3

(051)

M1 M2 S 1 2

TB5 TB15

(001)

M1 M2 S

TB5

(002)

M1 M2 S

TB5 TB15

(004)

M1 M2 S

TB5

(003)

M1 M2 S

TB5 TB15

(005)

M1 M2 S

TB5 TB15TB15TB15

(007)

M1 M2 S

TB5 TB15

(006)

L2 L3 L4

L5 L6 L7

MAMAMA

Sub remote

controller

CN40 CN41

CN41

Between terminal blocks

M1 M2 S

TB7

TB3

(052)

Shielded wire

12 12

(Shielding wires and address settings are necessary.)

Examples of Transmission Cable WiringWiring Method Address Settings

Group 3

Group 5Group 1

( ) Address

a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well

for all OC-OC, and IC-IC wiring intervals.

b. Use feed wiring to connect terminals M1, M2 and S and the ground terminal on the transmission cable terminal block

(TB3) of each outdoor unit (OC) to terminals M1, M2 and S on the transmission cable block (TB15) of the indoor unit (IC).

c. Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (IC) that has the most

recent address within the same group to the terminal block on the remote controller (MA).

d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor

unit (OC).

e. Use the grounded wire to connect the S-terminal on the transmission terminal of the outdoor unit (OC) and the

grounded terminal for the electrical components box.

Range

001 to 050 001 to 050 051 to 100

Use the most recent address within the same group of indoor units. Use an address, other than that of the IC (Main) from among the units within

the same group of indoor units. This must be in sequence with the IC (Main). Use the most recent address of all the indoor units plus 50.

f. On one outdoor unit only, change the jumper connector on the control panel from CN41 to CN40. g. Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which

the jumper connector was inserted into CN40 in Step above to the ground terminal ; in the electrical component box.

h. Set the address setting switch as follows.

Unit

IC (Main)

IC (Sub)

Outdoor Unit

Setting Method

• Name, Symbol, and the Maximum Units for Connection

M1 M2 S

TB7

(051)

M1 M2 S 1 2 1 2 1 2

TB5 TB15

TB15 TB15 TB15

Shielded wire

(001)

M1 M2 S

TB5

(002)

M1 M2 S

TB5

(004)

M1 M2 S

TB5

(003)

M1 M2 S

TB5

(005)

M1 M2 S

TB5

(007)

Group 1 Group 3 Group 5

M1 M2 S

TB5

(006)

MAMAMA

CN40

M1 M2 S

TB7

(052)

M1 M2 S

TB3

M1 M2 S

TB3

1212

TB15 TB15

TB15

• Max length via outdoor units : L1+L2+L3+L4+L5+L6+L7+L9 L1+L2+L3+L4+L5+L6+L8+L9 [ 500 meters (1.25mm2)

• Max transmission cable length : L

• Remote controller cable length : R

1+L2+L3+L4, L5+L6+L7, L5+L6+L8, L7+L8 [ 200 meters (1.25mm

1,R2, R3, R4 [ 10 meters (0.5 to 0.75mm

If the length exceeds 10 meters, use a 1.25 mm

tion (L

Permissible Length

8) should be included in the calculation of the maximum length and overall length.

)

shielded wire. The length of this sec-

Prohibited items

• The terminal S on the terminal block (TB7) for the central control panel should be connected to the ground terminal ; of the electric components box for one outdoor unit only.

• Never connect together the terminal blocks (TB5) for transmission wires for indoor units (IC) that have been connected to different outdoor units (OC).

• M-NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wring together

9 TROUBLESHOOTING

PAR-20MAA

ON/OFF

TEST RUN

˚C

1Hr.

FILTER

CHECK TEST

TEMP.

TIMER SET

Check code indicator (see NOTE 1) Test run remaining time indicator (see NOTE 3)

Display panel

ON/OFF button 9

ON/OFF LED (Lights up in operation)

LOUVER button 6

TEST RUN button 2

AIR DIRECTION button 2

AIR SPEED button 5

TEST RUN indicator

Indoor unit liquid pipe temperature indicator

(see NOTE 4)

(Cooling/Heating) OPERATION SWITCH button 3,4

Control panel

9-1. CHECK POINTS FOR TEST RUN

9-1-1. Procedures of test run

(1) Before test run, make sure that following work is completed.

• Installation related : Make sure that the panel of cassette type and electrical wiring is done. Otherwise electrical functions like auto vane will not operate normally.

• Piping related : Perform leakage test of refrigerant and drain piping. Make sure that all joints are perfectly insulated. Check stop valves on both liquid and gas side for full open.

• Electrical wiring related :

Check ground wire, transmission cable, remote controller cable, and power supply cable for secure connection. Make sure that all switch settings of address or adjustments for special specification systems are correctly settled.

(2) Safety check :

With the insulation tester of 500V, inspect the insulation resistance. Do not touch the transmission cable and remote controller cable with the tester. The resistance should be over 1.0 MΩ. Do not proceed inspection if the resistance in under 1.0 MΩ. Inspect between the outdoor unit power supply terminal block and ground first, metallic parts like refrigerant pipes or the electrical box next, then inspect all electrical wiring of outdoor unit, indoor unit, and all linked equipment .

(3) Before operation :

a) Turn the power supply switch of the outdoor unit to on for compressor protection. For a test run, wait at least 12 hours from this point. b) Register control systems into remote controller(s). Never touch the on/ off switch of the remote controller(s). Refer to “ 8-1-2 M-NET

Remote Controller Settings” on page 29 as for settings . In MA remote controller(s), this registration is unnecessary.

(4) More than 12 hours later form power supply to the outdoor unit, turn all power switch to on for test run. Perform test run according to the

“Operation procedure” table of the bottom of this page. While test running, make test run reports .

(5) When you deliver the unit after test run, instruct the end user for proper usage of the system using owners’ manual and the test run report

you made to certificate normal operation. If abnormalities are detected during test run, refer to “ 8-1-3 Countermeasures for Error During Test Run” on page 31. As for DIP switch setting of outdoor unit, refer to” 8-5. INTERNAL SWITCH FUNCTION TABLE” on page 54.

1 Turn on the main power supply the all units at least 12 hrs. before test run. ”HO” appears on display panel for 3 min. 2 12 hrs later, press TEST RUN button twice to perform test run. “TEST RUN “ appears on display panel. 3 Press OPERATION SWITCH button to make sure that air blows out. 4 Select Cooling (or Heating) by OPERATION SWITCH button to make sure that cool (or warm) air blow out. 5 Press Fan speed button to make sure that fan speed in changed by the button. 6 Press AIR DIRECTION button or LOUVER button to make sure that air direction is adjustable(horizontal, downward, upward, and each angle). 7 Check outdoor fans for normal operation. 8 Check interlocked devices (like ventilator) for normal operation, if any. This is the end of test run operation. 9 Press ON/OFF button to stop and cancel test run.

NOTE 1 : If error code appears on remote controller or remote controller malfunction , refer to “ 8-1-3 Countermeasures for Error During Run”

on page 31. NOTE 2 : During test run operation 2-hours off timer activates automatically and remaining time is on remote controller and test run stops 2 later. NOTE 3 : During test run, the indoor liquid pipe temperature is displayed on remote controller instead of room temperature. NOTE 4 : Depend on a model, “This function is not available” is appears when air direction button is pressed, however, this is not malfunction.

Operation procedure

9-1-2. Special Function Operation and Settings (for M-NET Remote Controller)

The addresses of indoor unit and linked units are displayed simultaneously.

(alternating display)

These alternating IC or LC displays will appear when entry is completed normally.

A flashing “88” will appear if there is a problem with the entry (indicating that the unit does not exist).

• It is necessary to perform “group settings” and “paired settings” at making group settings of different refrigerant systems (multiple outdoor unit). (A) Group settings: Enter the indoor unit controlled by the remote controller, check the content of entries, and clear

entries, etc.

(B) Paired settings: Used to set the linked operation of a Lossnay unit.

(1) Entering address: Follow the steps below to enter the addresses of the indoor unit using the remote controller.

a) Group settings

• Turning off the remote controller: Press the ON/OFF button to stop operation (the indicator light will go off).

• Changing to indoor unit address display mode: If the FILTER and k buttons on the remote controller are pressed simultaneously and held for two seconds, the display shown in Figure 1 will appear.

• Changing address: Press the temperature adjustment buttons to change the displayed address to the address to be entered.

• Entering the displayed address: Press the TEST RUN button to enter the indoor unit with the displayed address. The type of the unit will be displayed as shown in Figure 2 if entry is completed normally. If a selected indoor unit does not exist, an error signal will be displayed as shown in Figure 3. When this happens, check whether the indoor unit actually exists and perform entry again.

• Returning to the normal mode after completing entry: Press the FILTER and k buttons simultaneously and hold for two seconds to return to the normal mode.

Figure 1 (A) Group setting display

Figure 2 Normal completion of entry

Figure 3 Entry error signal

Flashing “88” indicates entry errorType of unit is displayed

b) Paired Settings

• Turn off the remote controller: Press the remote controller’s ON/OFF button to turn it off (the indicator light will go off).

• Put in indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and hold for two seconds.

✻The above steps are the same as when making group settings (A).

• Changing to the linked operation unit address display state: The display shown in Figure 4 will appear when the

button on the remote control is pressed.

• Displaying the address of the Lossnay unit and linked indoor unit: In this situation, the indoor unit number will be the lowest address of the group. The Lossnay unit will not operate if this setting is

incorrect.

✻If the temperature adjustment buttons are pressed, the address may be changed to the indoor unit that are

to be linked.

✻If the time setting buttons are pressed, the address of the linked units may be changed to the address where

it is desired to enter the Lossnay .

• Linking the Lossnay and the indoor unit: The display shown in Figure 5 will appear when the TEST RUN button is pressed. The indoor unit whose address is displayed and the Lossnay unit with a linked address will operate in a linked manner.

✻If it is desired to display the address of the Lossnay in the indoor unit address, display the indoor

unit address in the linked unit address, and the above content will also be recorded.

✻ Apart from the indoor unit with the lowest address in the group, display and enter the addresses of the other indoor unit

that are to be linked with the Lossnay unit.

• Returning to the normal mode after completing entry: Press the FILTER and k buttons on the remote controller simultaneously and hold for two seconds to return to the normal mode.

Figure 4 (B) Making paired settings

Figure 5 Completing normal entry

(2) Address check: Refer to section (1) regarding address entry.

"88" will appear in the room temperature display location.

"--" will appear in the room temperature display location.

a) In making group settings:

• Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off).

• Locate the indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and hold for two seconds.

• Display indoor unit address: The entered indoor units address and type will be displayed each time the button is pressed.

✻ When one entry is made, only one address will be displayed no matter how many times the w button is pressed.

• Returning to the normal mode after completing check: Simultaneously press the FILTER and k buttons on the remote controller and hold for two seconds to return to the normal mode.

b) In making paired settings:

• Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off).

• Put in indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and hold for two seconds.

• Changing to the linked operation unit address display state: Press the a button on the remote control.

• Displaying the address of the indoor unit to be checked: Change the address to that of the indoor unit to be checked by pressing the temperature adjustment buttons .

• Displaying the address of the linked Lossnay unit: Press the w button to display the addresses of the linked Lossnay and indoor unit in alternation.

• Displaying the addresses of other entered units: The addresses of the other entered units will be displayed in alternating fashion after resting the w button again.

• Returning to the normal mode after completing the check: Simultaneously press the FILTER and k buttons on the remote controller and hold for two seconds to return to the normal mode.

(3) Clearing an address: Refer to section (1) regarding the address entry and section (2) regarding checking addresses.

a) In making group settings:

• Turn off the remote controller: The procedure is same as a) in (2) Address check.

• Put in the indoor unit address display mode: The procedure is same as a) in (2) Address check.

• Displaying the indoor unit address to be cleared: The procedure is same as a) in (2) Address check.

• Clearing indoor unit address : ......Pressing the q button on the remote controller twice will clear the address entry of the

displayed indoor unit, resulting in the display shown in Figure 6. The display shown in Figure 7 will appear if an abnormality occurs and the entry is not cleared. Please repeat the clearing procedure.

• Returning to the normal mode after clearing an address: The procedure is same as a) in (2) Address check.

Figure 6 Display after address has been

cleared normally

Figure 7 Display when an abnormality

has occurred during clearing

b) In making paired settings:

• Turn off the remote controller: The procedure is same as b) in (2) Address check.

• Put into the indoor unit address display mode: The procedure is same as b) in (2) Address check.

• Put into the linked unit address display mode: The procedure is same as b) in (2) Address check.

• Display the address of the Lossnay unit or the indoor unit to be cleared.

• Deleting the address of a linked indoor unit: Pressing the q button on the remote controller twice will clear the address entry of the displayed indoor unit, resulting in the display shown in Figure 8.

• Returning to the normal mode after clearing an address: The procedure is same as b) in (2) Address check.

Figure 8 Display after address has been cleared normally

(altenating display)

"--" will appear in the unit type display location when an address has been cleared normally.

"88" will appear in the unit type display location when an abnormality has occurred during clearing.

9-1-3. Countermeasures for Error During Test Run

12 34 56 78 LD1

Check code Check codeTrouble Trouble

1102 1108 1302 1500 1501 1505 2502 2503 4115 4116 4220 4230 4250

5101

5102 5103

5105 5106

5110

5201 5300

Discharge temperature trouble Compressor's inner thermal sensor trouble High pressure trouble Excessive refrigerant replenishment Insufficient refrigerant Vacuum operation protection Drain pump trouble Drain sensor trouble (THd) Power synchronization signal trouble Indoor unit fan rotation trouble Inverter main voltage drop Overheat protection of radiator panel Multiple IPM errors (Over current trouble)

Intake thermistor trouble (TH21) or discharge thermistor trouble (TH1)

Liquid pipe thermistor trouble (TH22) or low pressure saturation thermistor trouble (TH2)

Gas pipe temperature sensor trouble (TH23) Piping temperature sensor trouble (TH5) Outdoor temperature sensor trouble (TH6) ACTM/IGBT Radiator panel thermistor trouble (THHS-A/B) (PUMY-P125VMA) IPM

Radiator panel

thermistor trouble (THHS)

(PUMY-P125YMA, PUMY-P125YMA

Pressure sensor trouble (63HS) Current sensor error (PUMY-P125VMA)

Duplicated unit address setting Transmission error (Transmission processor

hardware error) Transmission error (Transmission route BUSY) Transmission and reception error

(Communication trouble with transmission processor) Transmission and reception error (No ACK error)

No response MA communication receive signal error

(no receive signal) MA communication send signal error

(starting bit detection error) MA communication send error (H/W error) MA communication receive error

(Synchronous recovery error) Total capacity error

Capacity code error Connecting unit number error Address set error Remote controller sensor trouble Communication trouble with Power Board (PUMY-P125VMA)

6600 6602

6603 6606

6607 6608

6831

6832 6833

6834 7100

7101 7102 7105

7111

0403

• If a problems occurs during test run, a code number will appear in the temperature display area on the remote controller (or LD1 on the outdoor unit), and the air conditioning system will automatically cease operating.

Determine the nature of the abnormality and apply corrective measures.

21S4

SV1

52C : Compressor Contactor 21S4 : Four-way valve SV1 : Bypass valve

The operational status of the outdoor unit controller is displayed on the LD1 of the outdoor unit under normal conditions (when all SW1’s are OFF)

Field

Display item

Example: When the air conditioner is in the heating mode and the SV1 and compressor turned on.

Compressor

is operating

52C

Lit steadily

Display

1102

Meaning and detecting method

Discharge temperature abnormality

When the discharge temperature thermistor

(TH1) detects 125 the compressor stops and restarts operation in 3 minutes.

When the thermistor detects 125 again (2nd detection) within 30 minutes since the compressor has stopped, the compressor stops and restarts operation in 3 minutes.

When the thermistor detects 125 again (3rd detection) within 30 minutes since the compressor has stopped 2 times, the compressor stops abnormally. <1102> is displayed.

When the thermistor detects 125; or more after 30 minutes since the compressor has stopped (1st or 2nd time), it becomes the 1st detection or the same

performance as above-mentioned 1.

It is being delay for abnormal stop during 30 minutes since the compressor has stopped. In this time, check delay code <1202> will be displayed.

;or more (1st detection),

;or more

Causes

1) Gas leakage, Gas shortage

2) Overloaded operation

3) Indoor linear expansion valve operation defective

4) Ball valve operation defective

5) Outdoor fan block and defective of fan motor (heating mode)

6) Gas leakage between high and low pressure (Defective of 4-way valve or compressor)

7) Solenoid valve (SV1) performance defective (control failure to prevent the discharge temp. from rising by SV1)

8) Thermistor defective

9) Input circuit defective of multi controller board

Check points

Check the refrigerant amount. Check the indoor/outdoor unit operating

condition and status. Perform cool or heat operation to check the condition.

Check ball valve is fully opened. Check the outdoor fan motor.

Check the operating condition.

Check the solenoid valve performance.

Check the thermistor resistance.

Check the intake temperature in discharge temperature thermistor (TH1) by LD1. (See 5101 Discharge temperature thermistor error)

1108

1302

Compressor inner thermo abnormality When the inner thermo performs (1st

detection) during the compressor operation, the compressor stops and restarts operation in 3 minutes.

When the inner thermo performs again (2nd

detection) within 30 minutes since the compressor has stopped, or does not recover within 30 minutes, it stops abnormally. In this time <1108> is displayed.

When the inner thermo performs after 30

minutes since the compressor has stopped (1st stop), it is the 1st detection and becomes the same performance as above-

mentioned It is being delay for abnormal stop during

30 minutes since the compressor has stopped. In this time, check delay code <1208> will be displayed.

High-pressure pressure abnormality When high-pressure pressure sensor

detects 2.94MPa or more (1st detection) during the compressor operation, the compressor stops and restarts operation in 3 minutes

1) Low voltage supplied to power supply terminal block

2) Power supply L2 or L3 phase is opened. (When L1 phase is opened, power supply of the micro computer is not supplied.)

3) Compressor failure (Over current by motor rare short, etc.)

4) Overloaded operation

5) Gas leakage, Gas shortage

6) Inner thermo defective

7) Input circuit defective of multi controller board or power supply board

1) Indoor unit short cycle

2) Indoor unit filter clogging

3) Air flow capacity decrease due to indoor fan dirt

4) Indoor heat exchanger dirt

Measure the terminal voltage. Check the voltage reduction.

Check the open phase.

Check the coil resistance.

Check the indoor/outdoor unit operating condition and status.

Check the refrigerant amount.

Check the current flows in inner thermo.

When the inner thermo is normal and input circuit is defective, even if the inner thermo performs, the compressor does not operate and becomes error in 30 minutes.

Check the indoor unit. Check the indoor unit filter.

Check the indoor fan.

Check the indoor unit heat exchanger.

Display

1302

Meaning and detecting method

When the sensor detects 2.94MPa or more again (2nd detection) within 30 minutes since the compressor has stopped, the compressor stops again and restarts operation in 3 minutes.

When the sensor detects 2.94MPa or more

again (3rd detection) within 30 minutes since the compressor has stopped, the compressor stops again and restarts operation in 3 minutes.

When the sensor detects 2.94MPa or more

again (4th detection) within 30 minutes after 3rd compressor stop, it stops abnormally.

When the sensor detects 2.94MPa or more

after 30 minutes since the compressor has stopped (1st or 2nd or 3rd time), it becomes the 1st detection or the same

performance as above-mentioned

It is being delay for abnormal stop during 30 minutes since the compressor has stopped. In this time, check delay code <1402> will be displayed.

Note) For first 7 minutes in COOL or HEAT starting, error detected pressure of highpressure pressure sensor is 3.14MPa.

In this time <1302> is displayed.

Causes

5) Indoor fan motor lock Check the indoor fan motor.

6) Indoor fan motor failure Check the indoor fan motor.

7) 4-way valve performance failure (Stop in the middle of performance)

8) Ball valve performance failure (not full-opened)

9) Pipe clogged or broken

10) Indoor linear expansion valve performance failure

11) Outdoor fan motor lock

12) Outdoor fan motor failure

13) Outdoor unit short cycle

14) Outdoor heat exchanger dirt

15) Decrease in airflow capacity which the outdoor unit intakes because of intake defective of outer temperature thermistor. (Intake less than the actual outer air)

16) Indoor unit capacity codes miss setting (If the capacity code is set greatly, initial frequency rises and highpressure is easy to rise.)

17) Solenoid valve (SV1) performance failure (High-pressure pressure cannot be controlled by SV1)

Change COOL/HEAT operation mode to perform the 4-way valve. If any defective, replace the 4-way valve.

Check the ball valve full-opened.

Repair the defective points. Operate COOL or HEAT operation,

and check the operation condition.

Check the outdoor unit fan motor. Check the outdoor unit fan motor.

Check the outdoor unit. Check the outdoor unit heat

exchanger. Check intake temperature of the outer

temperature thermistor by LD1. (See 5106 Outer temperature thermistor error)

Check the capacity set switch in the indoor controller board. If it is wrong setting reset it. Check is available for the outdoor unit. (See 7101 Capacity code error)

Check the solenoid valve performance.

Check points

18) Indoor thermistor (liquid pipe temperature detection) detecting failure (thermistor removed) (Hot adjust time becomes long.)

19) High-pressure pressure sensor defective

20) High-pressure pressure sensor input circuit defective in multi controller board.

1500 Refrigerant over charged abnormality 1) Refrigerant over charged Check the refrigerant amount.

When below 5 conditions are satisfied

during the compressor operation (1st detection), the compressor stops and restarts operation in 3 minutes.

1. Cool mode, outer temp. is 20 Heat mode, outer temp. is 15

; or less

; or more

2) Light-loaded operation (Wrong determination)

3) Performance defective of the indoor's linear expansion valve and outdoor's electronic expansion valve.

Check the thermistor installed condition. Operate in trial mode and check the pipe temperature change by the remote controller.

Check the high-pressure pressure sensor.

Check the indoor/outdoor unit operating condition and status.

Perform cool or heat operation to check the condition.

Display

1500 2. The compressor has operated

1501

Meaning and detecting method

consecutively 20 minutes or more, since the indoor unit operation capacity had changed (including the compressor operation start).

3. Operation frequency is 80Hz or more.

4. Discharge super heat is below 10

5. Sub cool step continues for 5 minutes or more by SN=4.

Same condition as 1 is satisfied again within 60 minutes since the compressor has stopped, it stops abnormally. In this time, <1500> is displayed.

Same condition as 1 is satisfied again after 60 minutes since the compressor has stopped (1st time), it becomes the first

detection and same performance as 1.

It is being delay for abnormal stop during

60 minutes since the compressor has stopped. In this time, check delay code <1600> will be displayed. Refrigerant shortage abnormality

When the conditions of below detecting

mode 1 or 2 are satisfied (1st detection) during the compressor operation, the compressor stops and restarts operation in 3 minutes.

<Detecting mode 1> When the below conditions are satisfied

completely.

1. SW5-5 is OFF.

2. Compressor is operating in HEAT mode. 4) Error detection of discharge super

3. Discharge super heat is 60; or more.

4. Difference of outer temperature thermistor (TH6) and outdoor piping temp. thermistor

(TH5) applies to the formula of (TH6-TH5)<5;.

5. High-pressure pressure sensor is below

1.08MPa. <Detecting mode 2> When the below conditions are satisfied

completely.

1. Compressor is operating.

2. When cooling, discharge super heat is

; or more.

70 When heating, discharge super heat is 95;

or more. When the conditions of detecting mode

1and 2are satisfied again (2nd detection) within 30 minutes since the compressor has stopped, it stops abnormally. In this time, <1501> is displayed.

When the conditions of detecting mode

1and 2are satisfied again after 30 minutes since the compressor has stopped (1st time), it becomes the 1st detection and

same performance as above It is being delay for abnormal stop during 30

minutes since the compressor has stopped. In this time, check delay code <1600> will be displayed.

Causes

4) Discharge super heat detection error

1 High-pressure pressure sensor

failure

2 Discharge temperature thermistor

failure

3 Thermistor input circuit defective in

the multi controller board., and highpressure pressure sensor input circuit failure

1) Gas leakage, Gas shortage Check the refrigerant amount.

2) When heating operation, refrigerant shortage feeling operation

(When heating, air flow or thermo OFF are mixed-operation, it cause a refrigerant shortage operation.)

3) Ball valve performance failure (not full opened.)

heat

1 High-pressure pressure sensor

defective

2 Discharge temperature thermistor

defective

3 Thermistor input circuit defective and

high-pressure pressure sensor defective in multi controller board

5) Error detection of TH5/TH6

Check the high-pressure pressure sensor.

Check the resistance of discharge

temp. thermistor. Set the SW1 to and

check the high-pressure pressure sensor level.

Set the SW1 to and check the discharge temp. thermistor level.

When the high-pressure pressure sensor and discharge temp. thermistor are normal, if the above mentioned detecting pressure level and temp. are big different from the actual pressure and temp., replace the multi controller board.

Check the operation condition and refrigerant amount.

Check the ball valve is full opened.

Check the high-pressure pressure

sensor. Check the resistance of discharge

temperature thermistor. Set the SW1 to and

check the high-pressure pressure sensor level.

Set the SW1 to and check the discharge temp. thermistor level.

Check the resistance of thermistor.

1 Thermistor defective

Set the SW1 to and

2 Thermistor input circuit defective in

multi controller board

check the outdoor pipe temp. thermistor level.

Set the SW1 to and check the outer temp. thermistor level.

Check points

21345678

Display

1505

Meaning and detecting method

Vacuum operation protection

When the suction pressure saturation temperature thermistor (TH2) detects -13; or less and ''[indoor temperature-liquid pipe temperature][ 8deg'' for 3minutes continuously, the 1st COOL operation (compressor operation) after power supply on, it stops abnormally. In this time, <1505> is displayed

Causes

1) Ball valve performance failure (not full opened.)

2) Light-loaded operation (When outer temperature is low, the operation is liable to change to this mode.)

3) Low-pressure over suction by refrigerant shortage

Check points

Check the ball valve is full opened.

Check the indoor/outdoor unit operating condition and status.

Check the refrigerant amount.

2502 Drain pump abnormality

When either of the undermentioned

condition is satisfied (when determined drain sensor goes under water) while the indoor unit operation (excluding the case of abnormal stop) and after 3minutes since the drain pump has operated, the indoor unit stops abnormally (however fan continues the normal control). In this time, <2502> is displayed.

· Turn on the side heater of drain sensor, then when temperature up from the detected temperature before turning on is below 20; during 40 seconds.

· The detected temperature is below 63; after 40seconds since the side heater of drain sensor has turned on.

4) Pipe clogging and broken

5) Indoor linear expansion valve performance defective

1) Drain pump trouble

2) Drain defective

· Drain pump clogging

· Drain pipe clogging

3) Open circuit of drain sensor side heater

4) Contact failure of drain sensor connector

5) Dew condensation on drain sensor

· Drain water descends along lead wire.

· Drain water waving due to filter clogging.

6) Indoor controller board defective

· Drain pump drive circuit failure

· Drain heater output circuit failure

Repair the defective points. Perform cool or heat operation to

check the condition.

Check the drain pump. Performance

Please confirm whether water can be drained.

Confirm the resistance of the drain sensor side heater. (approx. 82'at normal between connector CN50 1 and 3 in the indoor controller board)

Check the connector contact failure.

Check the drain sensor lead- wire mounted.

Check the filter clogging

If the above mentioned checkpoints has any problem, replace the indoor controller board.

When condition which the outdoor unit is

stopped forcibly consists, or the drain sensor detects continuously to go under water 5 times, and also detects ''[liquid pipe temperature-suction temperature][ -10deg'' for 30minutes continuously, the indoor unit stops abnormally (however, fan operates by normal control) that indoor unit and excluding [Fan mode or OFF] in same refrigerant system. Also, the outdoor unit which is connected to that indoor unit with refrigerant system stops abnormality (compressor is inhibited to operation). In this time, <2502> is displayed.

7) Both of above mentioned 1)~6) and the indoor linear expansion valve fullclosed failure (leakage) happens synchronistically.

Check whether the indoor linear expansion valve leaks or not.

Display

2502 Drain pump abnormality

2503 Drain sensor (THd, DS) abnormality

Meaning and detecting method

(Note) Address/Attribute displayed on the remote controller shows the indoor unit which is cause of trouble.

Always detecting regardless of the indoor unit status.

Abnormality is cleared by either of two of the following;

· Reset power supply of the indoor unit and outdoor unit in same refrigerant system, which is the cause of trouble in the refrigerant system.

· Reset power supply of the indoor unit, which is the cause of trouble. (However, power supply interception of 10 minutes or more is necessary.)

(Note) Above 1 and 2 detects independently.

When the drain sensor detects short/open while the operation.

Short: detection of 90; or more

Open: detection of -40; or less

Causes

1) Connector (CN50) contact failure (insertion failure)

2) Thermistor wiring disconnection or half disconnection

Check points

Check whether the indoor controller

board connector (CN50) is disconnected or not.

Check whether the thermistor wiring is disconnected or not.

4115

Power supply synchronous signal abnormality

When power supply synchronous signal

(once a second) is not read, stop the compressor and restarts operation in 3 minutes. (When the synchronous signal is not read at just before of compressor start, the compressor does not start and stops operation 3 minutes.)

For 30minutes after the compressor stop (PUMY-P125VMA : 4minutes), it is being to delay abnormal stop. Then, when SW1 is set, the outdoor units address No. and check code <4165> blinks on the 4 digit digital display alternately.

SW1 setting

When power supply synchronous signal (once a second) is not read again during abnormal delay, the compressor stops abnormally. Then, the outdoor units address No. and check code <4115> blinks on the 4 digit digital display alternately.

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3) Thermistor defective

4) Indoor controller board (detecting circuit) failure

1) Disconnection or contact failure by loose of connector (CN2) is connected to power supply board.

2) Power supply synchronous detected circuit failures in the power supply board.

3) Power supply synchronous detected circuit failure in the multi controller board.

Check the resistance of thermistor.

0;···15k' 10;···9.6 k' 20;···6.3 k' 30;···4.3 k'

40;···3.0 k' If abnormality is not found in the

method of the above-mentioned from 1 to 3, it is defective of the indoor controller board.

Check the connector insertion.

Replace the power supply board.

Replace the multi controller board.

4116 Fan rotational frequency abnormality

(Detected only PKFY-P·VAM-A)

1) Fan rotational frequency detecting connector (CN33) disconnection in the indoor controller board.

Display

Meaning and detecting method

Causes

Check points

Check whether the connector (CN33) in the indoor controller board is disconnected or not.

When rotational frequency of the fan is detected 180rpm or less, or 2000rpm or more (1st detection) while the indoor unit fan operation, the fan stops for 30seconds.

2) Fan output connector (FAN1) disconnection in the indoor power board.

Check whether the connector (FAN1) in the indoor power board is disconnected or not.

When the rotational frequency of the fan is detected 180rpm or less, or 2000rpm or more again after the fan restarts, the indoor unit stop abnormally (fan stops). In this time, <4116> is displayed.

3) Fan rotational frequency detecting connector (CN33) wiring breakage in the controller board or fan output connector (FAN1) breakage in the indoor power board

Check whether the wiring is disconnected or not.

4) Filter clogging Check the filter.

5) Indoor fan motor trouble Check the indoor fan motor.

When there is no problem in the above-mentioned from 1 to 5;

6) Fan rotational frequency detecting circuit failure in the indoor controller board or fan output circuit failure in the indoor power board.

(1) In the case of abnormality after the fan operation; Replace the indoor controller board. When the fan does not recover even if the indoor controller board is replaced, replace the indoor power board.

(2) In the case of abnormality without fan operation, replace the indoor power board.

4220

PUMY-P125VMA

Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit

Abnormal if any of followings are detected during compressor operation;

• Decrease of DC bus voltage to 270V

• Instantaneous decrease of DC bus voltage to 200V

• Increase of DC bus voltage to 400V

1) Decrease of power supply voltage

2) Disconnection of compressor wiring

3) Defective 52C

4) Disconnection or loose connection of CN52C

5) Defective ACT module

6) Defective ACT module drive circuit of outdoor power board

7) Disconnection or loose connection of CNAF

8) Defective 52C drive circuit of outdoor control board

9) Disconnection or loose connection of CN5

10) Disconnection or loose connection of CN2

Check the facility of power supply. Correct the wiring (U•V•W phase) to

compressor. Replace 52C.

Check CN52C wiring.

Replace ACT module. Replace outdoor power board.

Check CNAF wiring.

Replace outdoor controller board.

Check CN5 wiring.

Check CN2 wiring.

Display

4220

Meaning and detecting method

PUMY-P125YMA PUMY-P125YMA

Shortage abnormality of inverter bus-bar voltage

When direct current bus-bar voltage

reduces extremely during the compressor operation, the compressor stops and restarts operation in 3minutes.

It is being delay to stop abnormally for 30

minutes after the compressor stop. Then, when SW1 is set, the outdoor unit address No. and check code <4320> blinks alternately on the 4 digit digital display.

SW1 setting

When detecting abnormality of direct bus-

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bar voltage decrease again during being delay abnormality, it performs the same action as 1. Also, when the abnormality is not detected, it operates normally. Hereafter, action 1 is repeated until 5th abnormal detection.

Causes

1) Power supply terminal voltage is low.

Measure the terminal voltage, and check whether the voltage decreases

Check points

or not.

2) Power supply L2,L3-phase is

Check the power supply is opened.

opened.

3) Diode stack (Diode module)

Check the resistance of diode stack.

defective.

4) Connector lead wire disconnection,

Check the defective points.

contact failure. Power supply board connecting

connector (CND)-Between smoothing capacitor (CB1 and CB2).

Power supply board connecting connector (52C)-Between electronmagnetic contactor (52C)

5) Connector (CN2) disconnection,

Check the connector insertion.

contact failure.

6) Instant power failure It happens by accident, and does not have the possibility to happen again.

When the 6th voltage decrease of direct bus bar is detected during being delay abnormality, it stops abnormally. In this time, the outdoor unit address No. and check code <4220> blinks alternately on the 4 digit digital display.

4230 Radiator panel shield temperature

When the radiator panel temperature thermistor (THHS) detects abnormality (1w detection) stops the outdoor unit once and restarts operation in 3minutes.

It is being delay to stop abnormally for 30minutes after the compressor stop. (PUMY-P125VMA : 10 minutes) Then, when SW1 is set, outdoor unit address No. and check delay code <4330> blinks alternately on the 4 digit digital display.

SW1 setting When the radiation shield temperature

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thermistor (THHS) detects abnormality again (2nd detection) during delay abnormality, perform the same action as 1.

When the radiation shield temperature

thermistor (THHS) detects abnormality on 3rd time during delay abnormality, it stops abnormally. (PUMY-P125VMA : 5 minutes) Then, the outdoor unit address No. check code <4230> blinks alternately on the 4 digit digital display.

7) Lightening serge, single interruption

by external noise.

8) Direct bus-bar voltage shortage

It happens by accident, and does not have the possibility to happen again.

Replace the power supply board.

detecting circuit failure in power supply board

1) Outdoor fan motor lock Check the outdoor fan motor.

2) Outdoor fan motor trouble Check the outdoor fan motor.

3) Block of duct which cooled air passes

Check whether the air duct for cooling is opened.

4) Surrounding temperature-rise Check whether there is a heat source in surroundings of the outdoor unit. (Surroundings temperature upper limit is 46;)

5) Thermistor failure Check the resistance of thermistor.

(Use tester)

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6) Thermistor input circuit failure in the

multi controller board

Change the SW1 to and check the temperature in radiation

shield temperature thermistor. When there is a big difference between the detected temp. and thermistor temp. replace the multi controller board.

Abnormality detecting temperature in radiation shield temperature thermistor

Abnormal temperature (;)

Type 125VMA 125YMA

85 84

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When the compressor is interrupted again by over current after restarting in 3minutes, it stops and restarts in 3minutes. Perform the same action as 2 and 3.

5) Disconnection of connector and lead wire, and miss-wiring Between multi controller board (CN4)

and power supply board (CN4)

Start-up the compressor and check the status of interrupting.

When the compressor is not interrupted within 30seconds after restarting in 3minutes, clear the delay of limited abnormal stop and back to normal.

Display

Meaning and detecting method

Causes

Check points

(1) When the compressor stops (output signal stop) after immediately after output signal comes out and is interrupted abnormally.

When the above action 4 is repeated and the compressor is interrupted within 30seconds after 7th start-up (PUMY-P125VMA : after 15th start-up), or the compressor is interrupted during confined the current-carry, it stops abnormally. Then, the outdoor unit address No. and check delay code <4250> blinks alternately on the 4 digit digital display.

Generation of short-circuit current is assumed.

(5),6),7),12),13)) (2) After 5seconds of start-up, when the compressor stops by interruption, being delay and repeats to confine current-carry for 3minutes restartup interruption to confine current-carry restart-up and becomes interruption-abnormality after approx. 18minutes from start-up.

(When the compressor is interrupted by over current during the operation)

The compressor is assumed not to start-up by torque shortage or lock. (5), 6), 7), 9), 10), 11), 12))

When over current limit is detected after 30seconds from start-up, the compressor stops and restarts in 3minutes.

(3) When the compressor stops after a while by the interception though the compressor starts once, and restarts in 3minutes.

The compressor is being delay to stop abnormally for 5minutes after the compressor stop.

(PUMY-P125VMA : 6minutes) Then, the outdoor unit address No. and check delay code <4350> blinks alternately on the 4 digit digital display.

SW1 setting

It is presumed to stop since the frequency goes up and the load grows though the compressor starts. (4), 5),

6), 7), 8)) Check the miss-wiring, terminal loosing and disconnection of connector and lead wire.

When the compressor is interrupted again within 2minutes after restarting in 3minutes, it stops abnormally. Then, the outdoor unit address No. and check delay code <4250> blinks alternately on the 4 digit digital display. PUMY-P125VMA : 6minutes, 4minutes.

Repair of defective points. (5), 11))

When the compressor is not interrupted within 2minutes

(PUMY-P125VMA : 3minutes) after restarting in 3minutes, it becomes the 1st detection and performs the same action as 1 and 2.

Check the resistance of IPM. In the case of abnormality, replace the gate ampere board and IPM. Check the resistance of diode stack.

6) IPM (intelligent power module) drive circuit in the gate amplifier defective

7) IPM (intelligent power module) drive signal output circuit defective, power factor detecting circuit failure in the multi controller board.

8) Current detection defective (AC,CT)

9) Compressor lock

10) Liquid sealing start-up of the compressor

11) Open-phase at the compressor side

12) IPM (intelligent power module) failure

13) Power supply board abnormality detecting circuit failure and IPM drive power supply circuit failure

In the case of abnormality, replace the diode stack.

When excluding of 456, Switch off and disconnect the connection of the compressor after confirming charge of main circuit electrolysis capacitor is discharged enough. Then, switch on and operate in no-load.

(1) When the compressor is interrupted again. Replace the power supply board when the compressor does not back to normal even if the gate amplifier board is replaced. Replace the multi controller board when the compressor does not back to normal even if the power supply board is replaced. (2) Check the balance of inverter output voltage. If it is unbalanced,··· Replace the power supply board when the compressor does not back to normal even if the gate ampere is replaced. Replace the multi controller board when the compressor does not back to normal even if the power supply board is replaced.

4250

PUMY-P125YMA PUMY-P125YMA

1) Single interruption by external noise.

IPM abnormality Over current limited

(When the compressor is interrupted by over current at its start-up.)

2) Single interruption by lightening serge

The interruption happens by accident. Since the interception only once returns automatically after restarting in 3minutes, the possibility to stop abnormally is very few.

When over current limit is detected within 30seconds from start-up, the compressor stops and restarts in 3minutes.

3) Power supply abnormality

Measure a receiving voltage and check the power supply capacity

While the compressor stops for 3minutes, confine the current-carry.

(a) Voltage decrease to 340V or less.

Check whether the phase is opened or not. Check from 4) to 13) by following procedure;

When SW1 setting during delay of interruption abnormality stop, the outdoor unit address No. and check delay code <4350> blinks alternately on the 4 digit digital display.

(b) Power supply open-phase

SW1 setting

(Current increase in the compressor by the voltage decrease)

4) Diode stack defective When it is opened-phase, same phenomenon occurs as power supply open-phase.

To be continued on the next page.

From the preceding page.

Display

4250

5101

Meaning and detecting method

Suction temperature thermistor (TH21) abnormality When controller detects short (high temp.)/open (low temp.) in thermistor during the operation, the operation stops and the operation changes to protect mode of restarting in 3minutes. If the thermistor does not recover in 3minutes, the operation stops abnormally. In this time, <5101> is displayed. Then, if the thermistor recover in 3minutes, it operates normally.

Short: Detected 90; or more Open: Detected —40; or less

Discharge temperature thermistor (TH1) abnormality

When controller detects short/open in thermistor during the operation, the outdoor unit stops once and restarts operation in 3minutes. When the detected temperature is normal at just before of restarting, the outdoor unit restarts.

When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <5101> is displayed.

While the compressor is protected not to

restart in 3minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <1202> blinks alternately on the 4 digit digital display.

SW1 setting

For 10 minutes after starting compressor,

for defrosting or for 3minutes after recover

of defrosting, above-mentioned short/open are not detected.

Short: 216;or more (1k') Open: 0; or less (700k')

Note) When outer temperature thermistor (TH6) is 5; or less on cooling, open detecting is not determined as abnormality.

21345678

Causes

When not applying from 4 to 7, it

Check points

applies to 9) and 10). Check the compressor.

In case of 10), recheck the compressor again after 12 hours with former power supply.

PUMY-P125VMA

1) Stop valve of outdoor unit is closed.

2) Decrase of power supply voltage

Looseness, disconnection or converse of compressor wiring connection

4) Defective fan of indoor/outdoor units

5) Short cycle of indoor/outdoor units

6) Defective input circuit of outdoor

Open stop valve.

Check facility of power supply.

Correct the wiring (U•V•W phase) to compressor.

Check indoor/outdoor fan.

Solve short cycle.

Replace outdoor controller board.

controller board

7) Defective compressor

1) Connector (CN20) contact failure Check whether the connector

Check compressor.

(CN20) in the indoor controller board is connected or not.

2) Thermistor wiring disconnection or half disconnection

3) Thermistor failure Check the resistance of thermistor;

Check whether the thermistor wiring

is disconnected or not.

0;···15k' 10;···9.6k' 20;···6.3k' 30;···4.3k' 40;···3.0k'

4) Detecting circuit failure in the indoor controller board

When there is no problem in above

mentioned 123,replace the indoor controller board.

1) Connector (TH1) contact failure Check whether the connector (TH1)

in the multi controller board is connected or not.

2) Thermistor wiring disconnection or half disconnection

3) Thermistor failure Check the resistance of thermistor;

Check whether the thermistor wiring is disconnected or not.

When the resistance is not below value, replace the thermistor. 0;··· about 700k' 10;··· about 410k' 20;··· about 250k' 30;··· about 160k'

4) Multi controller board input circuit failure

40;··· about 104k' Set the SW1 to

When the temperature in multi

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controller board is not an actual temperature, replace the multi controller board.

-99.9: Open

999.9: Short

Display

5102

Meaning and detecting method

Liquid pipe temperature thermistor (TH22) abnormality

When the thermistor detects short/open during the operation, the operation stops and the operation changes to protect mode of restarting in 3minutes. If the thermistor does not recover in 3minutes, the operation stops abnormally. In this time, <5102> is displayed. Then, if the thermistor recover in 3minutes, it operates

normally. Short: Detected 90; or more Open: Detected -40; or less

Causes

1) Connector (CN21) contact failure Check whether the connector

Check points

(CN21) in the indoor controller board is connected or not.

2) Thermistor wiring disconnection or half disconnection

3) Thermistor failure

Check whether the thermistor wiring is disconnected or not.

Check the resistance of thermistor;

0;···15k' 10;···9.6k' 20;···6.3k' 30;···4.3k' 40;···3.0k'

Low pressure saturation temperature thermistor (TH2) abnormality

When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <5102> is displayed.

While the compressor is protected not to

restart in 3minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <1211> blinks alternately on the 4 digit digital display.

SW1 setting

For 10 minutes after starting compressor,

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for defrosting or for 3minutes after recover of defrosting, above-mentioned short/open are not detected.

Short: 100; or more (0.5k') Open: -46; or less (200k')

4) Detecting circuit failure in the indoor controller board

When there is no problem in above

mentioned 123,replace the indoor controller board.

1) Connector (TH2) contact failure Check whether the connector (TH2)

in the multi controller board is connected or not.

2) Thermistor wiring disconnection or half disconnection

3) Thermistor failure Check the resistance of thermistor;

Check whether the thermistor wiring is disconnected or not.

0;···15k' 10;···9.6k' 20;···6.3k'

30;···4.3k' 40;···3.0k'

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4) Multi controller board input circuit failure

Set the SW1 to When the temperature in multi

controller board is not an actual temperature, replace the multi controller board.

-99.9: Open

999.9: Short

Display

Meaning and detecting method

5103 Gas pipe temperature thermistor (TH23)

abnormality

When the thermistor detects short/open after 3minutes-continuous thermo ON during cooling or dry operation, the operation stops and the operation changes to protect mode of restarting in 3minutes. If the thermistor does not recover in 3minutes, the the operation stops abnormally. In this time, <5103> is displayed. Then, if the thermistor recover in 3minutes, it operates normally.

Short: Detected 90; or more

Open: Detected -40; or less

Causes

1) Connector (CN29) contact failure Check whether the connector (CN29)

Check points

in the indoor controller board is connected or not.

2) Thermistor wiring disconnection or half disconnection

3) Thermistor failure Check the resistance of thermistor;

Check whether the thermistor wiring is disconnected or not.

0;···15k'

10;···9.6k' 20;···6.3k' 30;···4.3k' 40;···3.0k'

5105

Condenser outlet temperature thermistor (TH5) abnormality

When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <5105> is displayed.

While the compressor is protected not to

restart in 3minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <1205> blinks alternately on the 4 digit digital display.

SW1 setting

For 10 minutes after starting compressor,

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for defrosting or for 3minutes after recover of defrosting, above-mentioned short/open are not detected.

Short: 88; or more (0.4k')

Open: -39; or less (115k')

4) Detecting circuit failure in the indoor controller board

When there is no problem in above mentioned 123,replace the indoor controller board.

1) Connector (TH5) contact failure Check whether the connector (TH5)

in the multi controller board is connected or not.

2) Thermistor wiring disconnection or half disconnection

3) Thermistor failure Check the resistance of thermistor;

Check whether the thermistor wiring is disconnected or not.

When the resistance is not below value, replace the thermistor.

0;···15k' 10;···9.6k' 20;···6.3k'

30;···4.3k' 40;···3.0k'

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4) Multi controller board input circuit failure

Set the SW1 to

When the temperature in multi

controller board is not an actual temperature, replace the multi controller board.

-99.9: Open

999.9: Short

Display

5106

Meaning and detecting method

Outer temperature thermistor (TH6) abnormality

When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <5106> is displayed.

While the compressor is protected not to

restart in 3minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <1221> blinks alternately on the 4 digit digital display.

SW1 setting

For 10 minutes after starting compressor, for defrosting or for 3minutes after recover of defrosting, above-mentioned short/open are not detected.

Short: 88; or more (0.4k') Open: -39; or less (115k')

5110 PUMY-P125VMA:

Radiator panel temperature thermistor (THHS-A, THHS-B) abnormality

PUMY-P125YMA, PUMY-P125YMA

IPM radiator panel temperature thermistor (THHS) abnormality

When controller detects short/open in

thermistor during the operation, the outdoor unit stops once and restarts operation in 3minutes. When the detected temperature is normal at just before of restarting, the outdoor unit restarts.

When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <5110> is displayed.

While the compressor is protected not to restart in 3minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <1214> blinks alternately on the 4 digit digital display.

SW1 setting

For 10 minutes after starting compressor, for defrosting or for 3minutes after recover of defrosting, above-mentioned short/open are not detected. (PUMY-P125YMA, PUMY-P125YMA1)

PUMY-P125VMA:

Short:102; or more (2.9k') Open: -27; or less (950k')

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Causes

1) Connector (TH6) contact failure Check whether the connector (TH6)

Check points

in the multi controller board is connected or not.

2) Thermistor wiring disconnection or half disconnection

3) Thermistor failure Check the resistance of thermistor;

Check whether the thermistor wiring

is disconnected or not.

When the resistance is not below value, replace the thermistor.

0;···15k' 10;···9.6k' 20;···6.3k' 30;···4.3k' 40;···3.0k'

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4) Multi controller board input circuit failure

Set the SW1 to When the temperature in multi

controller board is not an actual temperature, replace the multi controller board.

-99.9: Open

999.9: Short

1) Connector (THHS) contact failure Check whether the connector (THHS)

in the multi controller board is connected or not.

2) Thermistor wiring disconnection or half disconnection

3) Thermistor failure Check the resistance of thermistor;

Check whether the thermistor wiring

is disconnected or not.

When the resistance is not below value, replace the thermistor.

0;···180k' 10;···105k' 20;···63k' 30;···39k'

4) Multi controller board input circuit failure

40;···25k'

Set the SW1 to

When the temperature in multi

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controller board is not an actual temperature, replace the multi controller board.

-99.9: Open

999.9: Short

PUMY-P125YMA, PUMY-P125YMA

Short:132; or more (1.2k') Open: -30; or less (1200k')

Display

5201

Meaning and detecting method

Pressure sensor (63HS) abnormality

When detected pressure in high-pressure pressure sensor is 1MPa or less during the operation, the compressor stops and restarts operation in 3minutes.

When the detected pressure is 1MPa or less at just before of restarting, the compressor stops abnormally. In this time, <5201> is displayed.

For 3minutes after the compressor stops,

the unit delays to abnormal stop. Then, the outdoor unit address No. and check delay code <1402> blinks alternately on the 4digit digital display.

SW1 setting For 3minutes after starting compressor,

for defrosting or for 3minutes after recover of defrosting, abnormality is not determined as abnormality.

21345678

Causes

1) High-pressure pressure sensor failure

2) Internal pressure decrease by gas leakage

3) Connector contact failure, disconnection

4) Multi controller board input circuit failure

Check points

Check the high-pressure pressure sensor.

Check the internal pressure.

Check the high-pressure pressure

sensor.

Check the high-pressure pressure

sensor.

5300 Current sensor error

Abnormal if current sensor detects –1.5A to

1.5A during compressor operation. (This error is ignored in case of SW6-3 ON. (PUMY-P125VMA))

6600 Duplex address error

Detected error when transmission of unit with the same address is confirmed,

Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality.

6602 Transmission processor H/W error

'' 1 '' shows on the transmission line though the transmission processor transmitted '' 0''.

Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality.

1) Disconnection of compressor wiring

2) Defective circuit of current sensor on outdoor power board

1) There are 2units or more with the same address among the outdoor unit or indoor unit or lossnay controller, remote controller.

2) When noise has occurred in the transmission signal, and the signal has changed.

1) When the wiring for either of the indoor unit, the outdoor unit or lossnay transmission line is constructed or polarity is changed with the power supply turned on, the transmission waves change in case that the transmission data collides mutually. It causes to detect error.

2) Transmission processor circuit failure

Correct the wiring (U•V•W phase) to

compressor.

Replace outdoor power board.

Look for the unit, which is source of

abnormality with the same address. When the same address is found, correct the address and turn off power supply of outdoor unit, indoor unit, and lossnay for 2minutes or more as the same time. Then, turn on power supply.

Check the transmitted wave and the

noise on the transmission line.

When the transmission line is

constructed with the current flowed, turn off power supply of outdoor unit, indoor unit and lossnay for 2minutes or more as the same time. Then, turn on power supply.

Check the transmitted wave and the

noise on the transmission line.

3) When the transmission data has changed by the noise.

Display

6603 Transmission bus busy error

Meaning and detecting method

Over error by collision 1) The transmission processor cannot

Abnormality when the state, which cannot be transmitted by collision of transmission, is consecutive for 8 to 10minutes.

Causes

be transmitted since a short cycle voltage of the noise etc. mixes on the transmission line consecutively.

Check points

Check whether the transmission line of the indoor unit, fresh master, lossnay and remote controller is connected to the outdoor unit terminal board (TB7) for centralized controller or not.

6606

The state that data cannot to be output to the transmission line by the noise happens for 8 to 10minutes consecutively.

Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality.

Signal communication error with transmission processor

Signal communication error between unit processor and transmission processor

Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality.

2) The transmission volume increases and cannot be transmitted since the wiring method is mistaken and the routing technique to the terminal board (TB3) for the transmission line of the outdoor unit and the terminal board (TB7) for centralized control cannot be transmitted.

3) The share becomes high since the data exists together to other transmitted data by a defective repeater (function which connects and intercepts the transmission of controlling system and centralized control system), and it causes abnormal detection.

1) It happened since the noise and lightening serge that happened by chance had not normally transmitted the data of the unit/transmission processor.

Check whether the transmission line with the other refrigerant system of the indoor unit and lossnay is connected to the outdoor unit terminal board (TB3) for transmission or not.

Check whether the outdoor unit terminal board for transmission line (TB3) and for centralized controller (TB7) are connected or not.

Check the transmitted wave and the noise on the transmission line.

Turn off power supply of outdoor unit, indoor unit, and lossnay for 2minutes or more at the same time. Then, turn on power supply. It recovers normally at the malfunction that happens by chance. When same abnormality occurs again, it is defective of a generation former controller.

2) The address transmission from the unit processor was not normally transmitted by the hardware of transmission processor defective.

Display

6607

Meaning and detecting method No ACK Abnormality which controller of the

sending side detects when there is no answer (ACK) from other side though data was transmitted once. It is detected 6 times every 30seconds continuously.

Note) Address/Attribute displayed on the remote controller shows the controller, which did not send back replay (ACK).

Causes

Factor that not related to origin

1) Since the address switch was changed with the current passed, the unit in the last address does not exist.

2) Decline of transmission voltage and signal by transmission line tolerance over

· The furthest point···200m

· Remote controller line···(12m) (See page 18-27 for details)

3) Decline of transmission line voltage and signal by unmatched kind of line. Kind···Shield line-CVVS,CPEVS No shield···VCTF, VCTFK,

CVV, CVS, VVR, VVF, VCT Line diameter···1.25 e or more

4) Decline of transmission line voltage and signal by a number of overconnected units.

5) Miss operation of origin controller, which happens by chance.

6) Origin controller defective

Check points

Turn off power supply of outdoor unit, indoor unit fresh master and lossnay for 2minutes or more at the same time. Then, turn on power supply. It recovers normally at the malfunction that happens by chance.

Check the address switch in the

address, which occurs abnormality.

Check whether the transmission line is connected / loosen or not at origin. (Terminal board or connector)

Check whether the transmission line

tolerance is over or not.

Check whether the kind of

transmission line is mistaken or not. When there is any trouble from above

1-5, turn off power supply of outdoor unit, indoor unit and lossnay for 2minutes or more at the same time. Then, turn on power supply.

1) When the cause of displayed address and attribute is on the outdoor unit side

(The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the outdoor unit.)

2) When the cause of displayed address and attribute is on the indoor unit side

(The remote controller detects when there is no reply (ACK) on transmitting from the remote controller to the indoor unit.)

1) Contact failure of outdoor unit or indoor unit transmission line

2) Indoor unit transmission connector (CN2M) disconnection

3) Sending/receiving signal circuit failure in the indoor/outdoor unit

1) When operating with multi refrigerant system indoor units, the remote controller transmits the signal to the indoor unit after the other refrigerant system outdoor unit is turned off or turned on again in 2minutes, and detects abnormality.

2) Contact failure of remote controller or indoor unit transmission line.

3) Indoor unit transmission connector (CN2M) disconnection.

4) Sending/receiving signal circuit failure in the indoor unit or remote controller.

When there is not any trouble in single refrigerant system (1outdoor unit) from above1-5, controller defective in displayed address and attribute. When there is not any trouble in different refrigerant system (2outdoor unit or more) from above1-5, determine it after 6.

When the address, which should not

exist, is an origin, since there is the indoor unit which memorizes the address data, cancel the unnecessary address data by the manual setting function of remote controller. However, they are limited to the system, which sets the group between different refrigerant systems, or which fresh master /lossnay are connected.

When there is not any trouble from above 1-6, replace the displayed address/attribute controller board.

In this time, when the error does not recover to normal, the outdoor unit multi controller board (repeater circuit) defective is expected.

Check the recovery by replacing the multi controller board one by one.

Display

6607

Meaning and detecting method

3) When the cause of displayed address and attribute is on the remote controller side

(The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the remote controller unit.)

Causes

1) When operating with multi refrigerant system indoor units, the indoor units transmits the signal to the remote controller after the other refrigerant system outdoor unit is turned off or turned on again in 2minutes, and detects abnormality.

2) Contact failure of remote controller or indoor unit transmission line

3) Indoor unit transmission connector (CN2M) disconnection.

4) Sending/receiving signal circuit failure in the indoor unit or remote controller.

Check points

4) When the cause of displayed address and attribute is on the fresh master side

(The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the fresh master.)

5) When the cause of displayed address and attribute is on the lossnay side

(The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the lossnay.)

1) When synchronized operating with other refrigerant system fresh master, the indoor units transmits the signal to the fresh master after the fresh master and same refrigerant system outdoor unit is turned off or turned on again in 2minutes, and detects abnormality.

2) Contact failure of fresh master or indoor unit transmission line

3) Indoor unit or fresh master transmission connector (CN2M) disconnection.

4) Sending/receiving signal circuit failure in the indoor unit or fresh master.

1) When the lossnay power supply is Off, the indoor unit detects abnormality at signal transmitting to the lossnay.

Display

6607

Meaning and detecting method

Causes

2) When synchronized operating with other refrigerant system lossnay, the indoor units transmits the signal to the lossnay after the lossnay and same refrigerant system outdoor unit is turned off or turned on again in 2minutes, and detects abnormality

3) Contact failure of lossnay or indoor unit transmission line

4) Indoor unit transmission connector (CN2M) disconnection.

5) Sending/receiving signal circuit failure in the indoor unit or lossnay.

Check points

6608

6) When the controller of displayed address and attribute is not recognized

No response

Though there was a replay (ACK) of having received signal from the other side, it is the abnormality when the response command does not return. The sending side detects the abnormality continuously six times every 30 seconds. Note) Address/Attribute displayed on the remote controller shows the controller, which did not response.

1) Since the address switch was changed with the current passed, the unit in the last address does not exist.

2) Since the fresh master/lossnay address are changed after synchronized setting of fresh master / lossnay by the remote controller, abnormality is detected at transmitting from the indoor unit.

1) Transmission repeats the failure by the noise etc.

2) Decline of transmission voltage and signal by transmission line tolerance over.

· The furthest point···200m

· Remote controller line···(12m) (See page 18-27 for details)

3) Decline of transmission line voltage and signal by unmatched kind of line.

Kind···Shield wire-CVVS,CPEVS

No shield ···VCTF, VCTFK,

CVV, CVS, VVR, VVF, VCT wire diameter···1.25eor more

Check the transmission wave and

noise on the transmission line.

Turn off power supply of outdoor unit,

indoor unit and lossnay for 2minutes or more at the same time. Then, turn on power supply again. It recovers normally at the malfunction that happens by chance. When same abnormality occurs again, it is defective of displayed address and attribute.

4) Miss operation of origin controller, which happens by chance.

Display

Meaning and detecting method

Causes

Check points

6810 UR communication abnormality (UR: Unit

Remote controller) Communications between the unit remote controller and indoor unit is not normal.

When there is no display of address and attribute to the remote controller. (When detecting by the unit remote controller)

1) It is abnormality though the unit remote controller transmitted ''H'', when "L" reception is detected continuously three times.

2) It is abnormality when there is no response from the indoor unit for 3 minutes against to ''monitor request'' from the unit remote controller.

3) It is abnormality when there is no response 3times continuously from the indoor unit against to ''operation /setting'' from the unit remote controller.

When the cause of displayed address and attribute is on the indoor unit side.

1) It is abnormality though the indoor unit transmitted ''H'', when "L" reception is detected continuously three times.

2) It is abnormality when the indoor units cannot receive the transmission signal from the unit remote controller for 3minutes.

1) Contact failure of the unit remote controller transmission line in the unit remote controller or indoor unit.

2) Decline of transmission voltage and signal on the unit remote controller transmission line by the unit remote controller transmission line tolerance over

3) When the transmission signal of unit remote controller changes by noise.

4) Unit remote controller transmitting / receiving signal circuit failure in the unit remote controller or indoor unit.

Check whether the transmission line of the indoor unit or unit remote controller is connected / loosen or not.

Check whether the unit remote

controller transmission line tolerance is over or not.

Check the transmission wave and

noise on the transmission signal of unit remote controller.

When there is not any trouble from

above 1-3, replace the indoor controller board or unit remote controller.

Check of following conditions is available by LED1/LED2 in the indoor controller board.

· When LED1 and 2 blinks at the same time.

The indoor unit is transmitting to the unit remote controller.

· When only LED2 blinks. The unit remote controller is

transmitting to the indoor unit. Or, other indoor unit is transmitting to

the unit remote controller.

·When LED1 and 2 does not blink. The indoor unit and unit remote

controller is not transmitting.

6831 6834

6832 6833

Signal reception abnormality (Remote controller) Following symptoms are regarded as abnormality.

1) When the remote controller cannot receive the signal from indoor controller normally even once for 3 minutes

2) When sub-remote controller cannot receive the signal even once for 2 minutes

Signal transmission abnormality (Remote controller) Following symptoms are regarded as abnormality.

1) When sub-remote controller cannot transmit the signal to the transmission path for 6 seconds

2) When the remote controller cannot finish transmitting the signal for 30 times on end

Defect of the transmission and reception

circuit of the remote controller. Defect of the transmission and

reception circuit of the indoor controller board

Noise occurs on the transmission line

of the remote controller All remote controllers are set as

sub-remote controller.

Defect of the transmission and

reception circuit of the remote controller Noise occurs on the transmission line

of the remote controller There are two main remote controllers.

1~3

Perform a check of the remote controller. According to the results, perform the following disposals.

• When "RC OK" is displayed The remote controller is normal. Turn off the power supply and turn it

on again. If "HO" is displayed for 4 minutes or more, replace the indoor controller board.

• When "RC NG" is displayed Replace the remote controller.

• When "RC 6832 or 6833" or "ERC 00-66" is displayed These displays may be due to noise, etc.

4 Set one remote controller to main

remote controller and the other to sub-remote controller.

Display

7100

Meaning and detecting method

When connected total models of the indoor units exceed the specified level (130% of the outdoor unit models), error code <7100> is displayed.

Causes

1) Connecting total models of the indoor unit exceed the specified level.

125: Possible up to 163 (code 33)

Check points

Check the total models of connected indoor unit.

Check the model code registration

switch (indoor controller board SW2) of connected indoor unit.

7101 Capacity code error

When the connected indoor unit models cannot be connected, <7101> is displayed.

2) There is a mistake in the registration of model name code of the outdoor unit.

The indoor unit models is not possible to connect,

The indoor unit of 20-125(code 4-25) is possible to connect.

Check the model code registration switch (outdoor multi controller board SW4) of the outdoor unit.

Check the model code registration

switch (indoor controller board SW2) in the connected indoor unit.

The outdoor unit SW1 operation can

check model code of the connected indoor units.

Code of indoor unit No.1

Code of indoor unit No.2

Code of indoor unit No.3

Code of indoor unit No.4

Code of indoor unit No.5

Code of indoor unit No.6

Code of indoor unit No.7

21345678

7102 Number of connecting unit over

When the connecting unit exceeds a number of limitations, error code <7102> is displayed.

Even if the indoor unit is not connected, becomes <7102> is display.

0403 Serial communication error

Abnormal if serial communication between outdoor multi board and outdoor power board is defective.

Connecting unit exceeds a number of limitations. It is assumed abnormality excluding the following cases;

1) The indoor unit can be totally connected up to 8 units. The indoor unit can be connected up to 8 units

2) Ventilation unit connecting is only 1unit.

1 Breaking of wire or contact failure of connector CN2 2 Breaking of wire or contact failure of connector CN4 3 Defective communication circuit of outdoor power board 4 Defective communication circuit of outdoor multi board for power board

Code of indoor unit No.8

21345678

Check whether the connecting unit exceeds a number of limitations or not.

12 Check connection of each connector CN2, CN4.

3 Replace outdoor power board. 4 Replace outdoor multi board.

Display

7105 Address setting error

Meaning and detecting method

Address setting of the outdoor unit is wrong.

Causes

Addresses miss setting of the outdoor unit.

The outdoor unit is not set in 000 or in the range of 51-100.

Check points

Check the address setting of the outdoor unit. The address should be set in 000 or 51-100.

When the setting is out of the range, reset it, turn off power supply of the outdoor unit, indoor unit and lossnay for 2minutes or more at the same time, and turn on power supply again.

7111 When an old type remote controller for

Remote controller sensor abnormality In the case of network remote controller, it

is an abnormality when incapable response returns from the net work remote controller during the operation.

M-NET is used, and the remote controller sensor is specified (SW1-1 is ON).

Replace the remote controller to net work remote controller.

9-2. Remote controller diagnosis

• MA remote controller is equipped with the diagnosis function. Check the remote controller with this function when the unit does not operate with the remote controller.

(1)

Electric current marker

(2)

(1) First, check the electricity current maker.

If the correct voltage (DC 8.7~13V) is not supplied on the remote controller, the electric current marker will be lit. If the electricity current marker is not lit, check the remote controller wiring and the indoor units.

(2) Transfer to remote control diagnosis mode.

Hold down the CHECK button for five seconds or more to display the diagram on the left.

Press the FILTER button to commence diagnosis of remote controller.

(3)

(3) Remote controller diagnosis results.

a) The remote control is functioning correctly.

Check other possible causes as there are on problems with the remote controller.

b) The remote controller has a nonconformity.

The remote controller must be replaced. Error display 1 (“NG”) flashes to show a nonconformity in the transmitter-receiver circuit.

To be continued on the next page.

PAR-20MAA

ON/OFF

CENTRALLY CONTROLLED

ERROR CODE

CLOCK

ON OFF

˚C

CHECK

CHECK MODE

FILTER

TEST RUN FUNCTION

˚C

1Hr.

NOT AVAILABLE

STAND BY DEFROST

FILTER

CHECK TEST

TEMP.

TIMER SET

“ ” indicator: Appears when current is carried.

Symptom or inspection code Cause Inspection method and solution

Though the content of operation is displayed on the remote controller, some indoor units do not operate.

• The power supply of the indoor unit is not on.

•

The address of the indoor units in same group or the remote controller

is not set correctly.

•

The group setting between outdoor units is not registered to the remote

controller.

• The fuse on the indoor unit controller board is blown.

• Check the part where the abnormality occurs.

1 The entire system 2 In the entire refrigerant system 3 In same group only 4 One indoor unit only

•

Check the self-diagnosis LED

of the outdoor unit.

• Check the items shown in the left that are related to the outdoor unit.

• Check the items shown in the left that are related to the indoor unit.

Though the indoor unit operates, the display of the remote controller goes out soon.

• The power supply of the indoor unit is not on.

• The fuse on the indoor unit controller board is blown.

( ) is not displayed on the remote controller.

(M-NET remote controller

is not fed.)

• The power supply of the outdoor unit is not on.

•

The number of connected indoor unit in the refrigeration system is over

the limit or the number of connected remote controller is over the limit.

•

M-NET remote controller is connected to MA remote controller cable.

• The transmission line of the indoor/outdoor unit is shorted or down.

• M-NET remote controller cable is shorted or down.

"HO" keeps being displayed or it is displayed periodically. ("HO" is usually displayed for 3 minutes at the longest after the power supply of the outdoor unit is on.)

• The power supply for the feeding expansion unit for the transmission line is not on.

• The address of the outdoor unit remains "00".

•

The address of the indoor unit or the remote controller is not set correctly.

• MA remote controller is connected to the transmission line of the indoor/outdoor unit.

The remote controller does not operate though ( ) is displayed.

• The transmission line of the indoor/outdoor unit is connected to TB15.

• The transmission line of the indoor/outdoor unit is shorted, down or badly contacted.

From the preceding page.

Potential problems other than those diagnosed for the remote controller.

a) Single transmission not possible if error display 2 (“6832

or 6833”) flashes. There is “noise” on the transmission line, or damage of other remote controller for the indoor units can be considered. Check the transmission path and other controller

• When the number of data errors generated is 02.

Remote controller transmission data Transmission data at transmission path

9-3. Remote controller trouble

b) Data error has occurred when error display three shows

“ERC” and number of data errors. Number of generated data error (maximum 66 errors). The number of generated data error stands for the difference in the number of bits of transmitted data from the remote controller and the actual number of bits that were transmitted along the transmission path. If this error occurs, “noise”, etc., is interfering with the transmission data. Check the transmission path.

(4) Cancel the remote controller diagnosis.

Hold down the CHECK button for five seconds or more to cancel the remote controller diagnosis. The “HO” operation lamp will flash, and the display screen will rectum to the status before remote controller diagnosis in approximately 30 seconds.

(1) For M-NET remote controller systems

Symptom Even the cooling (heating)

operation selection button is pressed, the indoor unit cannot be operated. The auto vane runs freely.

Fan setting changes during heating.

Fan stops during heating operation. Fan does not stop while operation has been stopped. No setting of fan while start SW has been turned on.

Indoor unit remote controller shows “HO” indicator for about two minutes when turning ON power supply.

Drain pump does not stop while unit has been stopped. Drain pump continues to operate while unit has been stopped.

Display of remote controller "Cooling (Heating)" blinks

Normal display

"Defrost "

Light out

STAND BY

“HO” blinks

Light out

—

CAUSE The indoor unit can not cool (heat) if other indoor units are heating (cooling).

Because of the control operation of auto vane, it may change over to horizontal blow automatically from the downward blow in cooling in cause the downward blow operation has been continued for one hour. At defrosting in heating, hot adjusting and thermostat OFF, it automatically changes over to horizontal blow.

Ultra-low speed operation is commenced at thermostat OFF. Light air automatically change over to set value by time or piping temperature at thermostat ON.

The fan is to stop during defrosting.

Fan is to run for one minute after stopping to exhaust residual heat (only in heating).

Ultra-low speed operation for 5 minutes after SW ON or until piping temperature becomes 35°C. There low speed operate for 2 minutes, and then set notch is commenced. (Hot adjust control) System is being driven.

Operate remote controller again after “HO” disappears.

After a stop of cooling operation, unit continues to operate drain pump for three minutes and then stops it.

Unit continues to operate drain pump if drainage is generated, even during a stop.

(2) For MA remote controller systems

Symptom or inspection code Cause Inspection method and solution

Though the content of operation is displayed on the remote controller, some indoor units do not operate.

Though the indoor unit operates, the display of the remote controller goes out soon.

( ) is not displayed on the remote controller. (MA remote controller is not fed.)

"HO" keeps being displayed or it is displayed periodically. ("HO" is usually displayed for 3 minutes at the longest after the power supply of the outdoor unit is on.)

The

remote controller does not

operate though ( ) is displayed.

• The power supply of the indoor unit is not on.

• Wiring between indoor units in same group is not finished.

• The indoor unit and Slim model are connected to same group.

• The fuse on the indoor unit controller board is blown.

• The power supply of the indoor unit (Master) is not on.

• In case of connecting the system controller, the setting of the system controller does not correspond to that of MA remote controller.

• The fuse on the indoor unit (Master) controller board is blown. The remote controller is not fed until the power supply of both indoor unit

and outdoor unit is on and the start-up of both units is finished normally.

• The power supply of the indoor unit is not on.

• The power supply of the outdoor unit is not on.

• The number of connected remote controller is over the limit (Maximum: 2 units) or the number of connected indoor unit that is over the limit (Maximum: 16 units).

•

The address of the indoor unit is "00" and the address for the outdoor

unit is the one other than "00".

•

The transmission line of the indoor/outdoor unit is connected to TB15.

• MA remote controller is connected to the transmission line of the indoor/outdoor unit .

• The remote controller cable is shorted or down.

• The power supply cable or the transmission line is shorted or down.

• The fuse on the indoor unit controller board is blown.

• The power supply of the outdoor unit is not on.

• The power supply of the feeding expansion unit for the transmission line is not on.

• The setting of MA remote controller is not main remote controller, but sub-remote controller.

• MA remote controller is connected to the transmission line of the indoor/outdoor unit

• The power supply of the indoor unit (Master) is not on.

• The transmission line of the indoor/outdoor unit is connected to TB15.

• The transmission line of the indoor/outdoor unit is shorted, down or badly contacted.

•The fuse on the indoor unit controller board is blown.

• Check the part where the abnormality occurs.

1 The entire system 2 In the entire refrigerant system 3 In same group only 4 One indoor unit only

•

Check the self-diagnosis LED

of the outdoor unit.

• Check the items shown in the left that are related to the outdoor unit.

• Check the items shown in the left that are related to the indoor unit.

9-4. The following Symptom do not represent trouble (emergency)

9-5. INTERNAL SWITCH FUNCTION TABLE

9-5-1. Outdoor unit internal switch function table (PUMY-P125VMA)

Switch

SW U1 1st digit

SW U2 2nd digit

SW1 Digital Display Switching

Step

Rotary switch

1~8

SWU2

(2nd digit)

Function

(1st digit)

OFF

SWU1

2345678

W The address automatically becomes "100" if it is set as "01~50"

Operation in Each Switch Setting

ON OFF When to Set

Before turning the power on

Can be set either during operation or not.

Remarks

SWU2

(2nd digit)

SWU1

(1st digit)

OFF

2345678

SW2 function Switching

Outdoor unit

SW3 Trial operation

SW4 Model Switching

Selects operating system startup

Connection Information Clear Switch

Abnormal data clear switch input

Refrigerant Volume Adjustment Operation

During the FAN or COOL mode, and thermo - OFF

or OFF in heating operation, set the opening of linear expansion valve on indoor unit.

During the FAN or COOL mode, and thermo - OFF in heating operation, set the opening of linear expansion valve on indoor unit.

Forced defrost

Defrost detection switching

Defrost disabled time selection

Vacuum operation protection (error code 1505) is not detected.

Enable/disable operation from outdoor

unit ON/OFF from the outdoor unit.

1~4

Service ref.

PUMY-P125VMA

SW4

OFF

Clear Clear abnormal data Run adjustment mode.

Active

Forced defrost

Cumulative 60 min.

Active

Enable ON

234

Start upDoesn´t start up Do not clear Normal Normal

Inactive

Normal

Continuous 30 min.

(ordinary) Inactive

Disable OFF

Before turning the

power on

OFF to ON any time after the power is turned on.

Can be set during compressor stopping.

OFF

While unit stopping.

OFF ➔ ON, during compressor running in heating mode.

While unit stopping.

Any time after the

power is turned on.

<Factory Settings> Set for each capacity.

Before the power is turned on.

2345678910

OFF

Auto Change Over from Remote Controller

Fixing the indoor units linear expansion valve opening

Fixing the outdoor unit electronic expansion valve opening.

Enable fixing at the desired frequency

SW5 function switching

Maintain outdoor fan at fixed speed

and ignore outdoor temperature sensor abnormality

Ignore refrigerant filling abnormality

6 7

Switching the target discharge pressure (Pdm)

Switching the target evaporation temperature (ETm)

SW6 function switching

Switching the Input Current Limit Level

Switching the High Pressure Limit Level

Ignore current sensor error

w1 For the system utilizing R-Converter units (PAC-SF29LB), SW3 trial operation function is not available.

Enable Fix

Disable

Normal

Fix Normal Enable Disable

Active

Active Pdm switching ETm switching 2 Amp down

0.2 MPS up Active

Inactive

Inactive Normal Normal Normal Normal Inactive

Before the power is turned on.

OFF ➔ ON while compressor is not operating

Any time after the power is turned on.

OFF

While unit stopping.

Can be set when off or during operation

Before turning the power on While unit stopping While unit stopping

OFF

2345678

Outdoor unit

Switch

SW U1 1st digit

SW U2 2nd digit

SW U3 3rd digit

SW1 Digital Display Switching

SW2 function Switching

SW5 function switching

SW3 Trial operation

SW4 Model Switching

Step

Operation in Each Switch Setting

ON OFF When to Set

Remarks

Before turning the power on

Before the power is turned on.

Can be set when off or during operation

SWU3

(3rd digit)

Rotary switch

1 2 3 4 5

8 9

4 5

6 7 8

Function

1~8

1~4

Can be set either during operation or not.

Before turning the power on

While unit stopping.

Any time after the power is turned on.

OFF to ON any time after the power is turned on.

Can be set during compressor stopping.

Active

Enable

Inactive

Active

Active Pdm switching ETm switching

Inactive

Inactive Normal Normal

Fix

Enable

Fix

OFF

Disable

Inactive

Start upDoesn´t start up

Clear

Do not clear

Normal Normal

Normal

Disable

Normal

Fix Normal Enable Disable

Normal

Continuous 30 min.

(ordinary)

Clear abnormal data Run adjustment mode.

Selects operating system startup Connection Information Clear Switch Abnormal data clear switch input Refrigerant Volume Adjustment Operation During the FAN or COOL mode, and thermo - OFF

or OFF in heating operation, set the opening of linear expansion valve on indoor unit.

During the FAN or COOL mode, and thermo - OFF in heating operation, set the opening of linear expansion valve on indoor unit.

Forced defrost

Cumulative 60 min.

Forced defrost

Defrost detection switching Defrost disabled time selection

Vacuum operation protection (error code 1505) is not detected.

Enable/disable operation from outdoor unit

ON/OFF from the outdoor unit.

<Factory Settings> Set for each capacity.

PUMY-P125YMA :

Fix the operation frequency

PUMY-P125YMA

1 :

Auto Change Over from Remote Controller Fixing the indoor units linear expansion

valve opening Fixing the outdoor unit electronic

expansion valve opening. Enable fixing at the desired frequency Maintain outdoor fan at fixed speed

and ignore outdoor temperature sensor abnormality

Ignore refrigerant filling abnormality Switching the target discharge pressure (Pdm) Switching the target evaporation temperature (ETm)

SWU2

(2nd digit)

SWU1

(1st digit)

SWU3

(3rd digit)

SWU2

(2nd digit)

SWU1

(1st digit)

OFF

2345678

OFF

2345678

OFF

2345678

OFF

234

OFF

2345678910

OFF

OFF ➔ ON, during compressor running in heating mode.

OFF ➔ ON while compressor is not operating

While unit stopping.

Service ref.

SW4

PUMY-P125YMA PUMY-P125YMA1

w1 For the system utilizing R-Converter units (PAC-SF29LB), SW3 trial operation function is not available.

9-5-2. Outdoor unit internal switch function table (PUMY-P125YMA, PUMY-P125YMA1)

9-6. Outdoor unit input/output connector

CN51

CN3S

5 4 3

Distant control board

External output adapter

Outdoor unit control board

Relay circuit

Maximum cable length is 10m

Lamp power

X Y

L1 : Error display lamp L

2 : Compressor operation lamp

X, Y : Relay (Coil standard of 0.9W or less for DC 12V)

Preparations in the field

1 2

External output adapter

Outdoor unit control board

Maximum cable length is 10m

X : Comp ON/OFF ON : Comp OFF

OFF : Normal

Preparations in the field

CN3D

SW1

SW2

1 2

Distant control board

External output adapter

Outdoor unit control board

Relay circuit

Maximum cable length is 10m

Lamp power

X, Y : Relay (DC1mA)

✽ For the system utilizing R-Converter units (PAC-SF29LB), the following systems are not available.

Group operation system, centralized controller, group remote controller, etc. (See the installation manul of R-Converter units.)

✽ For the system utilizing R-Converter units (PAC-SF29LB), the following functions are not available.

Test run (SW3), auto change over, auto change over (external signal). (See the installation manul of R-Converter units.)

Preparations in the field

SW1

SW2

PUMY-P125YMA PUMY-P125VMA PUMY-P125YMA

PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA

Cooling

Heating

Validity of SW1

OFF

Heating Cooling

Invalidity of SW1

● State (CN51)

● Comp ON/OFF (CN3S)

● Auto change over (CN3D)

-20 -10 0 10 20 30 40 50 Temperature (:)

Resistance (K")

2 3

Blue

Brown

Yellow

Orange

Red

White

Expansion valve (LEV(A), SLEV)

Parts name

Check points

Disconnect the connector then measure the resistance using a tester. (Surrounding temperature 10:~30:)

Disconnect the connector then measure the resistance using a tester. (

Part wiring temperature

20:)

•Thermistor (TH1) <Discharge temperature detection>

•Thermistor (TH2) <Low pressure saturated temperature detection>

•Thermistor (TH5) <Pipe temperature detection / judging defrost>

•Thermistor (TH6) <Outdoor temperature detection>

•Thermistor (THHS A/B) <Radiator panel>

PUMY-P125VMA

•Thermistor (THHS) <IPM radiator panel temperature thermistor detection>

PUMY-P125YMA,YMA

Normal

160k"~410k"

4.3k"~9.6k"

TH1 TH2 TH5 TH6

Abnormal

Open or short

Measure the resistance between the terminals using a tester. (Part wiring temperature 20C°)

4-WAY COIL (21S4)

Normal

1430"

Normal

(1) - (5)

White - Red

(2) - (6)

Yellow - Brown

(3) - (5)

Orange - Red

(4) - (6)

Blue - Brown

Abnormal

150" ±10%

Open or short

Normal

1970"

Abnormal

Open or short

Measure the resistance between the terminals using a tester. (Part wiring temperature 20C°)

SOLENOID COIL (SV1)

Measure the resistance between the terminals using a tester. (Part wiring temperature 20C°)

FAN MOTOR (MF1,2)

Normal

107.5" ±10%

128.0" ±10%

Motor lead wire

Abnormal

Open or short

White — Blue Blue — Red

Red

White

Blue

Orange

Protector

Opening and closing temperature of protector. Open: 135i5°C (Fan motor OFF) Close: 86i15°C (Fan motor ON)

THHS A/B THHS

39k"~105k"

9-7. HOW TO CHECK THE PARTS

PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA1

Low temperature thermistors

•Thermistor (TH2) <Low pressure saturated temperature detection>

•Thermistor (TH5) <Pipe temperature detection / judging defrost>

•Thermistor (TH6) <Outdoor temperature detection> Thermistor R0 = 15k' ±3%

B constant = 3480k' ±2%

R 0: 15k'

10: 9.6k' 20: 6.3k' 25: 5.2k'

t =15exp{3480(

273+t – 273

30: 4.3k'

)}

40: 3.0k'

To be continued on the next page.

200

150

100

25 50 75 100110 125

Temperature (:)

Resistance (K")

500

400

300

200

100

50 75 100 120

Temperature (:)

Resistance (K")

200

150

100

25 50 75 100 125

Temperature (:)

Resistance (K")

From the preceding page.

PUMY-P125VMA

Medium temperature thermistor

•Thermistor (THHS A/B) <Radiator panel> Thermistor R50 = 17k' ±2%

B constant = 4150k' ±3%

t =17exp{4150(

273+t – 323

)}

0: 180k' 25: 50k' 50: 17k' 70: 8k' 90: 4k'

PUMY-P125YMA, PUMY-P125YMA

Medium temperature thermistor

•Thermistor (THHS) <IPM radiator panel temperature thermistor detection> Thermistor R50 = 17k' ±2%

B constant = 4170k' ±3%

t =17exp{4170(

273+t – 323

)}

0: 180k' 25: 50k' 50: 17k' 70: 8k' 90: 4k'

High temperature thermistor

•Thermistor (TH1) <Discharge temperature detection> Thermistor R120 = 7.465k' ±2%

B constant = 4057k' ±2%

t =7.465exp{4057(

R 20: 250k'

30: 160k' 40: 104k' 50: 70k' 60: 48k'

273+t – 393

)}

70: 34k' 80: 24k' 90: 17.5k' 100: 13.0k' 110: 9.8k'

Closing

Opening

Completely sealed (80-100 pulses)

Number of pulses

Valve fully open at 2,000 pulses

Valve position (volume)

Expansion valve (LEV(A), SLEV: Outdoor unit)

LEV(A), SLEV

Blue

{

2 5 1 3 4 6

6 5 4 3 2 1

BRN RED BLU ORN YLW WHT

Brown Yellow

Red

White

Orange

2 3

Relay connector (Only LEV(A))

Controller board

DC12V

Drive circuit

Connector (CN60)

(LEV(A), SLEV)

Notes on expansion valve action

• LEV(A), SLEV to stepping motor ON/OFF after outdoor controller board has received pulse signal.

• The valve position can be changed according to the pulse signal number ratio. <connection between the LEV(A), SLEV and the outdoor controller board>

Note: Because the numbers of the relay connector and the connector on the controller board side are different, wiring work

must rely on the colors of the wires.

Valve closing:1➔2➔3➔4➔1 Valve opening:4➔3➔2➔1➔4

The address of the pulse output is shifted using the procedures mentioned earlier.

w1. All output phase will turn OFF when the LEV(A), SLEV

stops operating.

2. When the output phase is terminated or when the phase

Output(phase)

{1 {2 {3 {4

ON OFF OFF

2 LEV(A), SLEV action

Output

OFF

ON ON

OFF

OFF OFF

ON ON

ON OFF OFF

shift is not according to frequency, the motor rotation will become irregular, causing the motor to vibrate or lockup.

w When the power supply is on, the closing signal of 2,200

• The noise can be heard by resting your ear on the handle

pulse will be transmitted to decide the position of the valve.

The valve position can be determined when point A is

reached.

The LEV(LEV(A), SLEV) will not vibrate or make noise when the valve is operating smoothly. However, when the number of pulses change from E to A ,or if the valve lockup, there may be more noise than under normal circumstances.

of a screwdriver that is pressed against the top of the LEV(LEV(A), SLEV) valve.

To be continued on the next page.

Problem Check point Corrective measure

Remove the connector from the controller board and connect diagnostic LEDs.

Pulses will be issued for 10 seconds when the power is turned on. It indicates that there is an abnormality in the operating circuit if any LEDs don't turn on or off.

If the linear expansion valve (indoor unit) or electronic expansion valve (outdoor unit) becomes locked and the motor is still operating, the motor will emit a clicking noise and will not function. This clicking noise indicates an abnormality.

Use an all-purpose electrical meter to measure the resistance between the different coils (red-white, red-orange, brown-yellow, brown-blue). Normal resistance is within a range of 150'±10%.

In order to check the linear expansion valve, operate one indoor unit in the fan mode and another in the cooling mode. Then, use the outdoor multi controller board to operate the monitor and check the pipe temperature of the indoor unit (liquid pipe temperature). The linear expansion valve should be fully closed when the fan is operating. The temperature measured by the temperature sensor will drop if there is any leakage. If the measured temperature is significantly lower than that on the remote controller, this indicates that the valve is not closed. It is not necessary to replace the linear expansion valve if the leak of refrigerant is small and does not cause a malfunction.

1 Check improperly connected connector terminals and the wire colors. 2 Remove the connector on the controller board side and check electrical

conductance

Malfunction in microprocessor operating circuit

Locked expansion valve

Short circuit or broken circuit in expansion valve motor coil

Valve does no close completely

Incorrect connection or connection failure

Replace the indoor unit controller board or Replace the outdoor multi controller board.

Replace the linear expansion valve or electronic expansion valve

Replace the linear expansion valve if there is a major leak of refrigerant.

Continuity check of wrong part.

6 5 4 3 2 1

1k" LED

Temperature sensor

Linear expansion valve

From the preceding page.

3 Troubleshooting

101112131415161718192021222324252627282930

SW1 setting

12345678

00000000

10000000

01000000

11000000

00100000

10100000

01100000

11100000

00010000

10010000

01010000

11010000

00110000

10110000

01110000

11110000

00001000

10001000

01001000

11001000

00101000

10101000

01101000

11101000

00011000

10011000

01011000

11011000

00111000

10111000

01111000

Relay output display

Check display

Indoor unit check status

Protection input

Abnormality delay display 1

Abnormality delay display 2

Abnormality delay display 3

Abnormality delay history 1

Abnormality delay history 2

Abnormality delay history 3

Abnormality code history 2

Abnormality code history 3

Abnormality code history 4

Abnormality code history 5

Abnormality code history 6

Abnormality code history 7

Abnormality code history 8

Abnormality code history 9

Cumulative time

Outdoor unit operation display

Indoor unit operation mode

Indoor unit operation display

Capacity code (No. 1 indoor unit)

Capacity code (No. 2 indoor unit)

Capacity code (No. 3 indoor unit)

Capacity code (No. 4 indoor unit)

Capacity code (No. 5 indoor unit)

Compressor operation

No.1 unit check

TH1 abnormality

TH1 abnormality delay

52C

No.2 unit check

TH2 abnormality

TH2 abnormality delay

21S4

No.3 unit check

TH6 abnormality

Indoor unit capacity

TH6 abnormality delay

No.4 unit check

IPM abnormality

TH5 abnormality

Over capacity

IPM abnormality delay

TH5 abnormality

delay

IPM abnormality delay

TH5 abnormality delay

No.7 unit check

No.5 unit check

No.6 unit check

THHS abnormality

THHS abnormality delay

Lighting always

No.8 unit check

63HS abnormality

63HS abnormality delay

ON: light on OFF: light off

•When abnormality occurs, check display.

Check: light on Normal: light off

Display input microprocessor

protection (abnormality)

Display all abnormalities

remaining in abnormality

delay

Display all abnormalities

remaining in abnormality

delay history

•Display abnormalities up to

present (including abnormality

terminals)

•History record in 1 is the

latest; records become older

in sequence; history record

in 10 is the oldest.

Display of cumulative

compressor operating time

Thermo ON : light on Thermo OFF : light off

•Display of indoor unit

capacity code

•The No. 1 unit will start from

the address with the lowest

number

Notes

Alternating display of addresses

0000-9999 and abnormality code

(including abnormality delay code)

0~9999(unit::1-hour)

0~9999(unit::10-hour)

0~255

Excitation Current

No.1 unit mode

No.1 unit operation

Restart after 3 minutes

No.2 unit mode

No.2 unit operation

Compressor operation

No.3 unit mode

No.3 unit operation

Abnormality(detection)

No.4 unit mode

No.4 unit operation

No.5 unit mode

No.5 unit operation

No.6 unit mode

No.6 unit operation

No.7 unit mode

No.7 unit operation

No.8 unit mode

No.8 unit operation

0000~9999 (Alternating display of addresses and error code)

Display mode

Display on the LD1 (display data)

No.

Delay code

1202

1205

1208

1211

1214

1221

Delay code

1402

1600

1601

4165

4320

4330

4350

Abnormality delay

Discharge temperature abnormality

Discharge temperature sensor (TH1) abnormality

Intake outlet temperature sensor (TH5) abnormality

Compressor internal thermostat abnormality

Radiator panel thermistor (THHS) abnormality

Outside air temperature sensor (TH6) abnormality

Abnormality delay

High-pressure abnormality

Pressure sensor (63HS) abnormality

Over charge refrigerant abnormality

Insufficient refrigerant abnormality

Power synchronization signal abnormality

Radiator panel temperature abnormality

IPM abnormality

Abnormality in the

number of linked units

High-pressure

abnormality delay

High-pressure

abnormality delay

High-pressure

abnormality

Discharge temperature

abnormality

Address double

setting abnormality

Discharge temperature

abnormality delay

Discharge temperature

abnormality delay

Internal thermostat

abnormality delay

Internal thermostat

abnormality delay

Inner thermostat

abnormality

Radiator panel

abnormality

Radiator panel

overheating delay

Radiator panel

overheating delay

Vacuum operation

abnormality

Power synchronization

signal abnormality

Restrict power

IPM abnormality

Power synchronization

signal abnormality delay

Restrict power IPM

abnormality delay

Refrigerant over

charge delay

Refrigerant over

charge abnormality

Refrigerant over charge

abnormality delay

Restrict power IPM

abnormality delay

Power synchronization

signal abnormality delay

Insufficient voltage

abnormality

63HS sensor

abnormality delay

Insufficient voltage

abnormality delay

Insufficient voltage

abnormality delay

Saturation temperature of suction pressure

sensor (TH2) abnormality

Frequency converter insufficient

wiring voltage abnormality

Cooling : light on Heating: light flashing

Stop fan: light off

Abnormality code history 10

(the oldest)

Abnormality code history 1

(the latest)

Single-phase

current delay(CT)

Single-phase

current delay(CT)

Indoor unit

address error

Outdoor unit

address error

9-8. OUTDOOR UNIT FUNCTIONS

SW:setting

0....OFF

1....ON

Notes

•Display of indoor unit

operating mode

Light on/light off

Input: light off No input: light on

3-min.delay/no

Heating

thermo

OFF

Excitation current/no

Heating

thermo

Refrigerant pull back/no

Cooling

thermo

OFF

DEFROST/NO

Display on the LD1 (display data)

Cooling

thermo

Abnormal/Normal

Display of communication demand capacity

PUMY-P125VMA

Display of actual operating frequency

Display of target frequency

Display of number of outdoor

fan control steps (target)

Display of opening pulse of

outdoor SLEV and indoor LEV

Display of outdoor subcool

(SC) data and detection data

from high-pressure sensor and

each thermistor

Heating/Cooling

OFF Fan

ON/OFF

0~255

Demand junction

0.0~50.0 (A)

Display mode

IC1 operation mode

IC2 operation mode

IC3 operation mode

IC4 operation mode

IC5 operation mode

OC operational mode

External connection status

Communication demand capacity

Compressor operating current

SW1 setting

11111000

12345678

00000100

313233343536373840414564656667686970717273747576777880818283848586

No.

11000100

10000100

01000100

01100100

00100100

10100100

00010100

0.0~50.0 (A)

0~500 (V)

0~FF(16 progressive)

0~255

0~20

step number (cooling)

control

Input current of outdoor unit

DC bus voltage

Operational frequency

Target frequency

Outdoor fan control step number

EER fan

OC SLEV opening pulse

10110100

10010100

00000010

11000010

10000010

01000010

00100010

0~2000

IC1 LEV Opening pulse

IC2 LEV Opening pulse

IC3 LEV Opening pulse

IC4 LEV Opening pulse

IC5 LEV Opening pulse

High-pressure sensor (Pd)

11100010

01100010

10100010

00010010

10010010

01010010

-99.9 ~ 999.9 (short circuit/open: -99.9 or 999.9)

TH1(Td)

TH2(ET)

TH6

TH5

THHS

IC1 TH23

IC2 TH23

IC3 TH23

IC4 TH23

IC5 TH23

IC1 TH22

00110010

10110010

01110010

00001010

11001010

10001010

01001010

01101010

00101010

10101010

11010010

IC2 TH22

11101010 87

Notes

Display of outdoor subcool

(SC) data and detection data

from high-pressure sensor and

each thermistor

678

step data

subcool

Display of target

Display of indoor SC/SH data

Display of discharge superheat data

Display of all control target data

Display of actual frequency at time of abnormality delay

Display of fan step number at time of abnormality delay

Display of opening pulse outdoor SLEV

and indoor LEV at time of abnormality

delay

Display on the LD1 (display data)

-99.9 ~ 999.9 (short circuit/open: -99.9 or 999.9)

Display mode

IC3 TH22

IC4 TH22

IC5 TH22

IC1 TH21

IC2 TH21

IC3 TH21

IC4 TH21

12345678

00011010

10011010

01011010

11011010

00111010

SW1 setting

8889909192939495969798

No.

10111010

0~4

IC5 TH21

Outdoor SC (cooling)

Target subcool step

01111010

11111010

00000110

10000110

-99.9 ~ 999.9 (short circuit/open: -99.9 or 999.9)

during heating: subcool (SC)/during cooling: superheat (SH)

IC1 SC/SH

IC2 SC/SH

IC3 SC/SH

01000110

11000110

00100110

100

-99.9~999.9

Pdm(0.0~22.0)

IC4 SC/SH

IC5 SC/SH

Discharge superheat

Target Pd display (heating)

10100110

01100110

11100110

10010110

101

102

103

ETm(-1.0~8.0)

SCm(0.0~10.0)

SCm/SHm(0.0~14.0)

Target ET display (cooling)

Target outdoor SC (cooling)

Target indoor SC/SH (IC1)

Target indoor SC/SH (IC2)

01010110

11010110

00110110

10110110

105

106

107

108

109

Target indoor SC/SH (IC3)

Target indoor SC/SH (IC4)

Target indoor SC/SH (IC5)

01110110

11110110

00001110

111

110

112

0~FF(16 progressive)

0~20

Fan step number at time of abnormality delay

Actual frequency of abnormality delay

00000001

10000001

128

129

0~2000

OC SLEV opening pulse abnormality delay

IC1 LEV opening pulse abnormality delay

IC2 LEV opening pulse abnormality delay

IC3 LEV opening pulse abnormality delay

IC4 LEV opening pulse abnormality delay

IC5 LEV opening pulse abnormality delay

01000001

11000001

00100001

10100001

01100001

11100001

130

131

132

133

134

135

Display of data from high-pressure sensor,

all thermistors, and SC/SH at time of

abnormality delay

Display on the LD1 (display data)

2345 6

Display of actual frequency at time of abnormality

Display of fan step number at time of abnormality

Display of opening pulse of outdoor SLEV

and indoor LEV at time of abnormality

Display of data from high-pressure sensor

and all thermistors at time of abnormality

Display of data from SC/SH and all

thermistors at time of abnormality

Display mode Notes

High-pressure sensor data at time of abnormality delay

TH1 sensor data at time of abnormality delay

TH2 sensor data at time of abnormality delay

TH5 sensor data at time of abnormality delay

10010001

01010001

137

138

139

11010001

12345678

00010001

SW1 setting

No.

136

-99.9 ~ 999.9 (short circuit/open: -99.9 or 999.9)

THHS sensor data at time of abnormality delay

OC SC (cooling) at time of abnormality delay

IC1 SC/SH at time of abnormality delay

IC2 SC/SH at time of abnormality delay

IC3 SC/SH at time of abnormality delay

IC4 SC/SH at time of abnormality delay

IC5 SC/SH at time of abnormality delay

11110001

01110001

00110001 140

10110001

141

142

00001001

143

144

10001001

01001001

145

146

0~FF(16progressive)

0~20

Actual frequency at time of abnormality

Fan step number at time of abnormality

00000011

10000011

192

193

0~2000

opening pulse at time of abnormality

IC1 LEV opening pulse at time of abnormality

IC2 LEV opening pulse at time of abnormality

IC3 LEV opening pulse at time of abnormality

IC4 LEV opening pulse at time of abnormality

IC5 LEV opening pulse at time of abnormality

High-pressure sensor data at abnormality

OC SLEV

11000011

01000011

00100011

194

195

196

10100011

197

01100011 198

TH 1 sensor data at time of abnormality

11100011

00010011

10010011

199

200

201

-99.9 ~ 999.9 (short circuit/open: -99.9 or 999.9)

sensor data at time of abnormality

OC SC (Cooling) at time of abnormality

IC1 SC/SH at time of abnormality

IC2 SC/SH at time of abnormality

IC3 SC/SH at time of abnormality

IC4 SC/SH at time of abnormality

TH 2

01010011 202

TH 5

11010011

203

THHS

00110011

10110011

204

205

01110011

206

11110011

207

IC5 SC/SH at time of abnormality

00001011

10001011

01001011

208

209

210

Display of indoor unit capacity mode

Display of indoor unit operating mode

Heating

Cooling

Display of opening pulse of outdoor

SLEV and indoor LEV

OFF

thermo

OFF

thermo

Display of indoor SC/SH data

Display of all control target data

Display of opening pulse of indoor LEV

at time of abnormality

Display of opening pulse of indoor LEV

at time of abnormality

Display on the LD1 (display data)

2345 6

0~255

Display mode Notes

IC6 Capacity code

IC7 Capacity code

IC8 Capacity code

thermo

Cooling

OFF Fan

IC6 operation mode

IC7 operation mode

0~2000

IC8 operation mode

IC6 LEV opening pulse

IC7 LEV opening pulse

-99.9 ~ 999.9 (short circuit/open: -99.9 or 999.9)

IC8 LEV opening pulse

IC6 TH23

IC7 TH23

IC8 TH23

IC6 TH22

IC7 TH22

IC8 TH22

IC6 TH21

IC7 TH21

IC8 TH21

during heating:subcool (SC)/during cooling:superheat (SH)

-99.9 ~ 999.9 (short circuit/open: -99.9 or 999.9)

IC6 SC/SH

IC7 SC/SH

SCm/SHm (0.0~14.0)

IC8 SC/SH

IC6 target SC/SH

IC7 target SC/SH

0~2000

IC8 target SC/SH

IC6 LEV opening pulse at abnormality delay

IC7 LEV opening pulse at abnormality delay

-99.9 ~ 999.9 (short circuit/open: -99.9 or 999.9)

IC8 LEV opening pulse at abnormality delay

IC6 SC/SH at abnormality delay

IC7 SC/SH at abnormality delay

0~2000

IC8 SC/SH at abnormality delay

IC6 LEV opening pulse at time of abnormality

IC7 LEV opening pulse at time of abnormality

IC8 LEV opening pulse at time of abnormality

IC6 SC/SH at abnormality

-99.9 ~ 999.9 (short circuit/open: -99.9 or 999.9)

IC7 SC/SH at abnormality

IC8 SC/SH at abnormality

10101011

213

01101011 214

11101011 215

00011011

216

10011011

217

01011011

218

11001011

00101011

12345678

SW1 setting

No.

211

212

11011011 219

00111011 220

10111011 221

01111011

222

11111011

223

00000111 224

10000111 225

01000111

226

11000111

227

00100111 228

10100111

229

01100111

230

11100111 231

00010111

232

10010111

233

01010111

234

11010111

235

00110111 236

10110111 237

01110111

238

11110111 239

00001111 240

10001111 241

01001111

242

11001111

243

00101111 244

10101111

245

01101111

246

10 ELECTRICAL WIRING

Outdoor unit

Grounded

Circuit breaker

Power supply single phase 220-230-240V, 50Hz

Outdoor unit

Indoor unit

Grounded

Junction box

Circuit breaker

Power supply (3phase 380-400-415V, 50Hz)

• PUMY-P125VMA

• PUMY-P125YMA PUMY-P125YMA

Circuit breaker

Power supply single phase 50Hz 220-230-240V

This chapter provides an introduction to electrical wiring for the MULTI-S series, together with notes concerning power wiring, wiring for control (transmission wires and remote controller wires), and the frequency converter.

10-1. OVERVIEW OF POWER WIRING

(1) Please refer to your electric power company about the indoor wiring specifications for the power wire diameter

and capacity of protective devices (switches and leakage of breakers).

(2) Taking into consideration voltage drops caused by the length of the wires when operating devices installed

downstream, determine the specifications of wires able to handle the maximum current or voltage. In addition, protective devices must be able to protect against current leakage or excessive current.

(3) It is generally necessary to include leakage breakers when installing wiring for the CITY MULTI-S series.

Protective switches (excessive current protection) along main or branch lines should typically consist of fuse-less

breakers (ELB). (4) Please perform grounding. (5) It is suggested that you consult with your electric power company concerning restrictions on electrical specifications.

10-2. WIRE DIAMETER AND MAIN POWER SWITCH CAPACITY

10-2-1. Wiring diagram for main power supply

10-2-2. Power supply wire diameter and capacity

Minimum wire cross section area(mm2)

2.5

Branch line

—

–

Model

PUMY-P125VMA

PUMY-P125YMA

Outdoor unit

Model

All Models

Indoor unit

Main line

5.5(6)

Minimum wire cross section area(mm)

Main line

[1.6

Grounded

5.5(6)

Grounded

[1.6

2.5

Interrupting current

32A

25A

15A

Breaker

Performance characteristic

32A,30mA for 0.1 sec. or less

25A,30mA for 0.1 sec. or less

Breaker

Performance characteristic

15A, 30mA for 0.1 sec. or less

10-3. DESIGN FOR CONTROL WIRING

Outdoor unit

1.25mm

shielded wire

Indoor unit

(Note 1)

(Note 2)

Grounded

Remote controller

Please note that the types and numbers of control wires needed by the CITY MULTI-S series will depend on the remote controllers and whether they are linked with the system.

10-3-1. Selection number of control wires

M-NET remote controller

Use

Remote controller ➔ indoor unit Wires connecting ➔ indoor units Wires connecting ➔ indoor units with outdoor unit Wires connecting ➔ outdoor units

wires

Transmission

10-3-2. Control signal wires

● Transmission wires

• Types of transmission cables : Shielding wire CVVS or CPEVS.

• Cable diameter : More than 1.25E

• Maximum wiring length : Within 200 m

10-3-3. Remote controller wiring

Remote controller used in system control operations.

• Group operation involving different refrigerant systems.

• Linked operation with upper control system.

2 wires (non-polar)

Kind of remote control cable

Cable diameter

Remarks

2-core cable (unshielded)

0.3 to 1.25E When 10m is exceeded, use cable with the same specifications as 10-3-2. Transmission line wiring

10-3-4. Permissible length of control wiring

• Maximum extension length of wiring

(L1+L2+L3+L4).....less than 500m

• Maximum wire length

(L1+L2+L4 or L1+L3 or L2+L3+L4).....less than 200m

• Remote controller wire

(R)....network controller wire is less than 10m

Note 1: Please make sure that the transmission wire is

grounded at the outdoor unit ground terminal.

Note 2: If the remote controller wire is greater than 10m,

the excess portion should use shielded wire at least 1.25mm total length of the farthest wire is less than 200m.

in size. Please make sure that the

10-4. SYSTEM SWITCH SETTING

Outdoor unit

Power supply 3 phase 4 wire. 50Hz 380-400-415V

Power supply Single phase. 50Hz 220-230-240V

Grounded

Group operation

Remote controller wire

Junction box

Indoor unit

circuit breaker

L1,L2,L3

15A circuit breaker

[1.6mm ✕ 2

0.5~0.75mm

✕ 2

1.25mm

✕ 2

In order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the MULTI-S series, each microprocessor must be assigned an identification number (address). The addresses of outdoor units, indoor units, and remote controller must be set using their settings switches. Please consult the installation manual that comes with each unit for detailed information on setting procedures.

10-5. EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM

10-5-1. Example using a M-NET remote controller

10-6. METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A CAPACITY

AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY

The electrical characteristics of connected indoor unit system for air conditioning systems, including the MULTI-S series, will depend on the arrangement of the indoor and outdoor units. First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company.

10-6-1. Obtaining the electrical characteristics of a MULTI-S series system

(1)Procedure for obtaining total power consumption

Total power consumption of each indoor unit

✻1 power consumption of outdoor unit

Total power consumption of system

✻1 Please note that the power consumption of the outdoor unit will vary depends on the total capacity of the selected

indoor units.

(2)Method of obtaining total current

Total current through each indoor unit

✻2 current through outdoor unit

current through system

Total

✻2 Please note that the

(3) Method of obtaining system power factor

Use the following formula and the total power and current obtained in parts 1 and 2 on the previous page to calculate the system power factor.

10-6-2. Applying to an electric power company for power and total current

Calculations should be performed separately for heating and cooling employing the same methods; use the largest resulting value in your application to the electric power company.

current through the outdoor unit will vary depending on the total capacity of the selected indoor units.

System power factor =

Page numbers in this technical manual

See the technical manual of each indoor unit

Standard capacity table—P.8-10

See the technical manual of each indoor unit

Page numbers in this technical manual

See the technical manual of each indoor unit

Standard capacity table—P.8-10

See the technical manual of each indoor unit

(Total system power consumption)

(Total system current x voltage)

Power consumption

1+2 <kW>

Subtotal

1+2 <A>

o 100%

11 REFRIGERANT PIPING TASKS

11-1. REFRIGERANT PIPING SYSTEM

Line-Branch Method

Connection Examples (Connecting to Four Indoor Units)

Permissible

Length

Permissible High/

Low Difference

Total Piping Length Farthest Piping Length Farthest Piping Length After First Branch High/Low Difference in Indoor/Outdoor Section High/Low Difference in Indoor/Indoor Section

■ Selecting the Refrigerant Branch Kit

■ Select Each Section of Refrigerant Pipng

(1) Section From Oudoor Unit

to First Branch (A)

(2) Sections From Branch to

Indoor Unit (a,b,c,d)

(3) Section From Branch to

Each Section of Piping

Branch (B,C)

Select the size from the table to the right.

A+B+C+a+b+c+d is 100 meters or less

(L)

A+B+C+d is 70 meters or less

(R)

B+C+d is 30meters or less

(H)

30 meters or less (If the outdoor unit is lower, 20 meters or less)

(h)

12 meters or less Use an optional branch piping kit (CMY-Y62-C-E).

(1) Refrigerant Piping Diameter In Section (Outdoor Unit Piping Diameter)

PUMY-P125

(3) Refrigerant Piping Diameter In Section

From Outdoor Unit to First Branch

Piping Diameter (mm)Model

Liquid Line

Gas Line

From Branch to Branch

80 or less

80 or more

{9.52 {19.05

Liquid Line (mm) Gas Line (mm)Downstream Unit Model Total

Outdoor Unit

First Branch

Indoor unit

(2) Refrigerant Piping Diameter In Section

From Branch to Indoor Unit

(Indoor Unit Piping Diameter)

Model number

40 or lower

50 to 80

100, 125

{9.52 {9.52

Piping Diameter (mm)

Liquid Line

Gas Line

Liquid Line

Gas Line

Liquid Line

Gas Line

{15.88 {19.05

{6.35 {12.7 {9.52 {15.88 {9.52 {19.05

■ Additional refrigerant charge

• Refrigerant of 3kg equivalent to 50-m total extended piping length is already included

when the outdoor unit is shipped.

Thus, if the total extended piping length is

50m or less, there is no need to charge with additional refrigerant.

• If the total extended piping length exceeds 50m, calculate the required additional

refrigerant charge using the procedure shown on the right.

• If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant.

Additional refrigerant charge

(kg)

Liquid pipe size Total length of {9.52 ✕ 0.06

(m) ✕ 0.06 (kg/m)

Liquid pipe size Total length of {6.35 ✕ 0.024

(m) ✕ 0.024 (kg/m)

Refrigerant amount for outdoor unit

–

<Example> Indoor 1 : 25 A : {9.52 10m a : {6.35 5m

2 : 50 B : {9.52 10m b : {9.52 10m 3 : 25 C : {9.52 10m c : {6.35 10m

At the conditions below:

4 : 50 d : {9.52 10m

The total length of each liquid line is as follows

{9.52 : A + B + C + b + d = 10 + 10 + 10 + 10 + 10 = 50m {6.35 : a + c = 5 + 10 = 15m

Therefore, <Calculation example> Additional refrigerant charge = 50 ✕ 0.06 + 15 ✕ 0.024 – 3.0 = 0.4kg (rounded up)

125: 3.0kg

Header-Branch Method

Connection Examples (Connecting to Four Indoor Units)

Permissible

Length

Permissible High/

Low Difference

Total Piping Length Farthest Piping Length Farthest Piping Length After First Branch High/Low Difference in Indoor/Outdoor Section High/Low Difference in Indoor/Indoor Section

■ Selecting the Refrigerant Branch Kit

■ Select Each Section of Refrigerant Piping

(1) Section From Outdoor Unit

to First Branch (A)

(2) Sections From Branch to

Indoor Unit (a,b,c,d)

Each Section of Piping

Select the size from the table to the right.

■ Additional refrigerant charge

• Refrigerant of 3kg equivalent to 50-m total extended piping length is already included

when the outdoor unit is shipped.

Thus, if the total extended piping length is 50m or less, there is no need to charge with additional refrigerant.

• If the total extended piping length exceeds 50m, calculate the required additional

refrigerant charge using the procedure shown on the right.

• If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant.

A+a+b+c+d is 100 meters or less

(L)

A+d is 70 meters or less

(R)

d is 30 meters or less

(H)

30 meters or less (If the outdoor unit is lower, 20 meters or less)

(h)

12 meters or less Please select branching kit, which is sold separately, from the table below.

(The kit comprises sets for use with liquid pipes and for use with gas pipes.)

•The CMY-Y68- cannot be connected with 100,125 type indoor units. Branch header (4 branches)

CMY-Y64-C

(1) Refrigerant Piping Diameter In Section

From Outdoor Unit to First Branch (Outdoor Unit Piping Diameter)

Branch header (8 branches)

CMY-Y68

(2) Refrigerant Piping Diameter In Section

From Branch to Indoor Unit (Indoor Unit Piping Diameter)

Piping Diameter (mm)Model

PUMY-P125

Liquid Line

Gas Line

{9.52 {19.05

40 or lower

50 to 80

100,125

Additional refrigerant charge

(kg)

Liquid pipe size Total length of {9.52 ✕ 0.06

(m) ✕ 0.06 (kg/m)

Liquid pipe size Total length of {6.35 ✕ 0.024

(m) ✕ 0.024 (kg/m)

<Example> Indoor 1 : 50 A : {9.52 30m a : {9.52 15m

2 : 40 b : {6.35 10m 3 : 25 c : {6.35 10m

At the conditions below:

4 : 20 d : {6.35 20m

The total length of each liquid line is as follows

{9.52 : A + a = 30 + 15 = 45m {6.35 : b + c + d = 10 + 10 + 20 = 40m

Therefore, <Calculation example> Additional refrigerant charge = 45

✕ 0.06 + 40 ✕ 0.024 – 3.0 = 0.7kg (rounded up)

Outdoor Unit

First Branch

Indoor unit

Piping Diameter (mm)Model number

Liquid Line

Gas Line

Liquid Line

Gas Line

Liquid Line

Gas Line

Refrigerant amount for outdoor unit

–

125: 3.0kg

{6.35 {12.7 {9.52 {15.88 {9.52 {19.05

Method of Combined Branching of Lines and Headers

Connection Examples (Connecting to Five Indoor Units)

Note:Pipe re-branching after the header branching

is not possible.

D D D

Note:The total of downstream unit models in the

table is the total of models as seen from point A in the figure above.

d e

Outdoor unit

First branching (branching

joint)

Branching joint

Indoor unit

Branching header

To downstream unit

Blind caps

Permissible

Length

Permissible High/

Low Difference

Total Piping Length Farthest Piping Length Farthest Piping Length After First Branch High/Low Difference in Indoor/Outdoor Section High/Low Difference in Indoor/Indoor Section

■ Selecting the Refrigerant Branch Kit

■ Select Each Section of Refrigerant Piping

(1) Section From Outdoor Unit

to First Branch (A)

(2) Sections From Branch to

Indoor Unit (a,b,c,d,e)

(3) Section From Branch to

Each Section of Piping

Branch (B,C)

Select the size from the table to the right.

■ Additional refrigerant charge

• Refrigerant of 3kg equivalent to 50-m total extended piping length is already included when the outdoor unit is shipped. Thus, if the total extended piping length is 50m or less, there is no need to charge with additional refrigerant.

• If the total extended piping length exceeds 50m, calculate the required additional refrigerant charge using theprocedure shown on the right.

• If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant.

A+B+C+a+b+c+d+e is 100 meters or less

(L)

A+B+b is 70 meters or less

(R)

B+b is 30 meters or less

(H)

30 meters or less (If the outdoor unit is lower, 20 meters or less)

(h)

12 meters or less Please select branching kit, which is sold separately, from the table below.

(The kit comprises sets for use with liquid pipes and for use with gas pipes.)

Branch Joint

CMY-Y62-C-E

(1) Refrigerant Piping Diameter In Section

From Outdoor Unit to First Branch (Outdoor Unit Piping Diameter)

Branch Header (4 branches)

CMY-Y64-C

(2) Refrigerant Piping Diameter In Section

From Branch to Indoor Unit (Indoor Unit Piping Diameter)

Branch Header (8 branches)

Piping Diameter (mm)Model

PUMY-P125

Liquid Line

Gas Line

{9.52 {19.05

40 or lower

50 to 80

100,125

(3) Refrigerant Piping Diameter In Section

From Branch to Branch

Liquid Line (mm) Gas Line (mm)Downstream Unit Model Total

80 or less

80 or more

{9.52 {9.52

{15.88 {19.05

Additional refrigerant charge

(kg)

Liquid pipe size Total length of {9.52 ✕ 0.06

(m) ✕ 0.06 (kg/m)

Liquid pipe size Total length of {6.35 ✕ 0.024

(m) ✕ 0.024 (kg/m)

<Example> Indoor 1 : 50 A : {9.52 10m a : {9.52 5m

2 : 40 B : {9.52 20m b : {6.35 10m 3 : 32 C : {9.52 10m c : {6.35 5m 4 : 20 d : {6.35 5m 5 : 20 e : {6.35 5m

The total length of each liquid line is as follows

{9.52 : A + B + C + a = 10 + 20 +10 + 5 = 45m {6.35 : b + c + d + e = 10 + 5 + 5 + 5 = 25m

Therefore, <Calculation example> Additional refrigerant charge = 45 ✕ 0.06 + 25 ✕ 0.024 – 3.0 = 0.3kg (rounded up)

CMY-Y68

Piping Diameter (mm)Model number

Liquid Line

Gas Line

Liquid Line

Gas Line

Liquid Line

Gas Line

Refrigerant amount for outdoor unit

–

125: 3.0kg

At the conditions below:

{6.35 {12.7 {9.52 {15.88 {9.52 {19.05

Multi-distribution piping on outdoor unit

Connection Examples (Connecting up to Five Indoor Units)

*If multi-distribution piping on outdoor unit is done, a maximum of 5 indoor units can be connected.

Permissible

Length

Permissible High/

Low Difference

Total Piping Length Farthest Piping Length

High/Low Difference in Indoor/Outdoor Section High/Low Difference in Indoor/Indoor Section

■ Selecting the Refrigerant Branch Kit

Cannot redistribute the piping.

a+b+c+d+e is 100 meters or less

(L)

e is 30 meters or less

(H)

30 meters or less (20 meters or less if the outdoor unit is below.)

(h)

12 meters or less Use multi-distribution piping on outdoor unit kit CMY-S65 ( 5 branches).

*Cannot be connected with 100,125 type indoor units.

Outdoor Unit

First Branch

Indoor unit

■ Select Each Section of Refrigerant Piping

• Section the piping size for each section from the branch to the indoor unit (a,b,c,d,e) using the chart on the right.

■ Additional refrigerant charge

• Refrigerant of 3kg equivalent to 50-m total extended piping length is already included

when the outdoor unit is shipped. Thus, if the total extended piping length is 50m or less, there is no need to charge with additional refrigerant.

• If the total extended piping length exceeds 50m, calculate the required additional refrigerant charge using theprocedure shown on the right.

• If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant.

• Refrigerant Piping Diameter In Section From Branch to Indoor Unit (Indoor Unit Piping Diameter)

Model number

40 or lower

50 to 80

Piping Diameter (mm)

Liquid Line

Gas Line

Liquid Line

Gas Line

{6.35 {12.7 {9.52 {15.88

Additional refrigerant charge

(kg)

Liquid pipe size Total length of {9.52 ✕ 0.06

(m) ✕ 0.06 (kg/m)

Liquid pipe size Total length of {6.35 ✕ 0.024

(m) ✕ 0.024 (kg/m)

–

<Example> Indoor 1 : 20 a : {6.35 10m

2 : 20 b : {6.35 20m 3 : 20 c : {6.35 20m 4 : 50 d : {9.52 20m 5 : 50 e : {9.52 30m

The total length of each liquid line is as follows

{9.52 : d + e = 20 + 30 = 50m {6.35 : a + b + c = 10 + 20 + 20 = 50m

Therefore, Additional refrigerant charge = 50

✕ 0.06 + 50 ✕ 0.024 – 3.0 = 1.2kg (rounded up)

Refrigerant amount for outdoor unit

125: 3.0kg

11-2. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE

Indoor unit

All refrigerant of this system will leak out to this room if there is leakage at this indoor unit.

Direction of refrigerant flow

Outdoor unit

11-2-1. Introduction

R-22 refrigerant of this air conditioner is non-toxic and nonflammable but leaking of large amount from an indoor unit into the room where the unit is installed may be deleterious. To prevent possible injury, the rooms should be large enough to keep the R407C concentration specified by KHK : (a high pressure gas safety association) installation guidelines S0010 as follows.

✻ Maximum concentration Maximum refrigerant concentration of R407C of a room is 0.31 kg/K accordance with the installation guidelines.

To facilitate calculation, the maximum concentration is expressed in units of O/K ( kg of R407C per K)

Maximum concentration of R407C: 0.31O/K

(KHK installation guidelines S0010)

(2) Calculate room volumes (in K) and find the room

with the smallest volume

The part with represents the room with the smallest volume.

(a) Situation in which there are no partitions

(b) There are partitions, but there are openings that allow

the effective mixing of air.

Outdoor unit

Indoor unit

Outdoor unit

11-2-2. Confirming procedure of R407C concentration

Follow 1) to 4) to confirm the R407C concentration and take appropriate treatment, if necessary.

(1) Calculate total refrigerant amount by each refrig-

erant system based on one indoor unit. Total refrigerant amount is prechrged refrigerant amount of the indoor unit at ex-factory plus additional charged amount at field installation.

Note: When single refrigeration system is consists of several independent refrigeration circuit, figure out the total refrigerant amount by each independent refrigerant circuit.

Indoor unit

Opening

Wall

tus that is linked to a household gas detection and alarm device, the calculations should be performed for the second smallest room.

Ventilation apparatus

The smallest room

The second smallest room

(situation in which there are no door openings or in which there are openings above and blow doors that occupy at least 0.15% of the floor area)

Outdoor unit

Indoor unit

(3) Use the results of calculations (1)and (2) to calcu-

late the refrigerant concentration:

Total refrigerant in the refrigerating unit (O) The smallest room in which an indoor

unit has been installed (K)

If the calculation results do not exceed the maximum concentration, perform the same calculations for the larger second and third room, etc., until it has been determined that nowhere will the maximum concentration be exceeded.

[ maximum concentration(O/K)

Maximum concentration of R407C:0.31O/K

12 DISASSEMBLY

Service Ref. : PUMY-P125VMA

PUMY-P125YMA PUMY-P125YMA

✻ 1. Please pay attention to safety when assembling or disassembling heavy items.

2. The refrigerant system must be vacuum-pumped before performing piping maintenance.

OPERATING PROCEDURE PHOTOS

1. Side and top panel disassembly procedures:

(1) Remove the side panel screws (3 pcs : 5o10 screws)

so that the hanging portion on the right side can be slid downward. Remove the side panel.

(2) Remove the top panel screws (5o10 screws :

3 pcs in front, 2 pcs in back) and take off the top panel. <If the rear screws on the top panel cannot be removed> Remove the front screws on the top panel (3 pcs : 5o10 screws) and lift up the front part of the top panel.

2. Propeller and fan motor disassembly procedures:

(1) Remove the side panel (See photo 1) (2) Remove the top panel (See photo 1) (3) Remove the fan protection cover fixing screw

(1 pc : 15o15), and take off the fan guard by rotating it to the left.

(4) [PUMY-P125VMA]

Remove the fan motor wires (MF1) (MF2) from the multi circuit board. Remove the capacitor wires.

Photo 1

Fan protection covers

Fan protection cover fixing screws

Photo 2 PUMY-P125VMA

Propeller

Top panel installation screws

Front panel

Top panel

Side panel installation screws

Side panel (for service)

Power circuit board

Multi circuit board

[PUMY-P125YMA, PUMY-P125YMA

Remove the fan motor wires (MF1) (MF2) from the power supply board. Remove the capacitor wires.

(5) Loosen the fan motor wire clips (3 pcs). (6) Remove the propeller. (7) Remove the fan motor screws (3 pcs : 5o16 screws)

and remove the fan motors.

]

Electrical parts box

Fan motors

Photo 3 PUMY-P125YMA, PUMY-P125YMA1

Power supply board

Multi controller board

Propeller

Electrical parts box

Fan motors

OPERATING PROCEDURE PHOTOS

3. Thermistor (TH6: outdoor air temperature sensor detection) disassembly procedures:

(1) Remove the side panel (See photo 1) (2) Remove the top panel (See photo 1) (3) Remove the thermistor holder fixing screw (1 pc : 4o10),

and remove the thermistor holder.

(4) Remove the Thermistor (outdoor air temperature

detection).

(5) Remove the TH6 wire from the multi-functional

controller board in the electrical box and pull out of the electrical box.

4. Electrical parts box disassembly procedures:

[PUMY-P125VMA]

(1) Remove the side panel (See photo 1) (2) Remove the top panel (See photo 1) (3) Disconnect the following wires from the

multi controller board.

• Thermistor (Discharge temperature detection):TH1

• Thermistor (Low pressure saturated temperature detection):TH2

• Thermistor (Pipe temperature defection / Judging defrost):TH5

• Thermistor (Outdoor temperature detection): TH6

• High-pressure sensor (Discharge pressure detection): 63HS

• Expansion valve: LEV(A)

• Fan motor: MF1 and MF2

• Solenoid valve: SV

• 4-way valve: 21S4

Photo 4

Rear panel

Photo 5 PUMY-P125VMA

Power circuit board

Thermistor (air temperature

detection)

Thermistor holder screw

Thermistor holder

Heat exchanger

Board plate

Electrical parts box

Rear panel

Multi circuit board

(4) Remove the board plate.

Pull wires out of the electrical parts box after disconnecting them.

(6) After removing the connector cover, remove the compressor

wire and the inner thermostat terminal. (7) Remove the electrical box screw (1 pc : 4 o 10). (8) Remove the valve bed screws from the right side of

the valve bed (2 pcs : 4 o 10).

(9) Remove the electrical box after slightly loosening the

rear panel. The electrical box is held by two claws on the left and one on the right.

Electric parts box screw

Valve bed screws

Connector cover Valve bed

OPERATING PROCEDURE PHOTOS

5. Electrical parts box disassembly procedures: [PUMY-P125YMA, PUMY-P125YMA

(1) Remove the side panel (See photo 1) (2) Remove the top panel (See photo 1) (3) Disconnect the following wires from the

multi controller board.

• Thermistor (Discharge temperature detection):TH1

• Thermistor (Low pressure saturated temperature detection):TH2

• Thermistor (Pipe temperature defection • judging defrost):TH5

• Thermistor (Outdoor temperature detection): TH6

• High-pressure sensor (Discharge pressure detection): 63HS

• Expansion valve: SLEV

(4) Remove the board plate. (5) Disconnect the following wires from the power supply

board:

• Fan motor: MF1 and MF2

• Solenoid valve: SV1

• 4-way valve: 21S4 Pull wires out of the electrical box after disconnecting them.

(6) After removing the connector cover, remove the compressor

wire and the inner thermostat terminal.

(7) Remove the electrical box screw (1 pc : 4 o 10). (8) Remove the valve bed screws from the right side of

the valve bed (2 pcs : 4 o 10).

(9) Remove the electrical box after slightly loosening the

rear panel. The electrical box is held by two claws on the left and one on the right.

]

Photo 6 PUMY-P125YMA, PUMY-P125YMA

Power supply board

Board plate

Connector cover Valve bed

Electrical parts box

Rear panel

Multi controller board

Electric parts box screw

Valve bed screws

6. Solenoid valve coil and 4-way valve coil disassembly procedures:

(1) Remove the side panel (See photo 1). (2) Remove the top panel (See photo 1). (3) Remove the electrical parts box (See photo 5 or 6). (4) Remove coil screws (Solenoid valve: 1 pc M4x6;

4-way valve: 1 pc M5x6), and remove the solenoid valve (SV1) and 4-way valve (21S4) wires from the power supply board.

Photo 7

Solenoid valve coil

4-way valve

4-way valve coil

OPERATING PROCEDURE PHOTOS

7. Thermistor disassembly procedures:

(1) Remove the side panel (See photo 1) (2) Remove the top panel (See photo 1) (3) Remove the electrical parts box (See photo 5 or 6) (4) Recover gas from the refrigerant circuit. (5) Remove the Thermistor

(discharge temperature detection: TH1), (Low pressure saturated temperature detection: TH2), (Pipe temperature detection / judging defrost: TH5).

To remove TH1, cut the bands holding it and remove

✻

the piping cover.

Photo 8

Thermistor (TH1)

Bands

Photo 9

Oil separator

Piping cover

Thermistor (TH2)

Welding part of high pressure sensor

Thermistor (TH5)

8. Compressor disassembly procedures:

(1) Remove the side panel (See photo 1) (2) Remove the top panel (See photo 1) (3) Remove the screws (2 pcs : 5o10, 1 pc : 4o10) and the

front panel. (4) Remove the electrical parts box (See photo 5 or 6). (5) Remove screws (3 pcs : 4o10, 4 pcs : 5o16) and the

valve bed (including the ball valve mounting portion). (6) Recover gas from the refrigerant circuit. (7) Remove the separator screw. (1 pc : 4o10) (8) Remove the welded portions of the compressor

discharge and intake pipes. (9) Remove the compressor leg cover on the separator side. (10)Remove the compressor leg mounting nuts (3 pcs).

(use an adjustable wrench)

(11)Move the separator to the left and remove the

compressor.

9. Accumulator disassembly procedures:

(1) Remove the compressor (See photo 10). (2) Remove the welded portions of the accumulator. (3) Lift up the accumulator and pull it out from the rear.

Compressor

Photo 10

Separator

Separator installation screw

Compressor

Installation nuts

Accumulator

OPERATING PROCEDURE PHOTOS

10. Four-way valve disassembly procedures:

(1) Remove the side panel (See photo 1). (2) Remove the top panel (See photo 1). (3) Remove the electrical parts box (See photo 5 or 6). (4) Recover gas from the refrigerant circuit. (5) Remove the 4-way valve coil (See photo 7). (6) Remove the mounting screws from the gas side ball

valve (2 pcs : 5o16). (7) Remove the field piping from the outdoor unit (gas side). (8) Remove the welded portion.

1 Upper and lower heat exchanger inlet (T connector). 2 Accumulator inlet (T connector) 3 4-way valve inlet

(9) Remove 4-way valve.

Do not expose 4-way valve to above 120°C.

✻

Photo 11

Pipe of heat exchanger inlet (T connector)

Accumulator inlet (T connector)

4-way valve

4-way valve inlet

Gas side ball valve

11. Solenoid valve disassembly procedures:

(1) Remove the side panel (See photo 1). (2) Remove the electrical parts box (See photo 5 or 6). (3) Recover gas from the refrigerant circuit. (4) Remove the solenoid valve coil (See photo 7). (5) Remove the welded portions of the solenoid valve.

(take care excessive heating)

12. Expansion valve disassembly procedures:

(1) Remove the side panel (See photo 1). (2) Remove the electrical parts box (See photo 5 or 6). (3) Recover gas from the refrigerant circuit. (4) Remove welded portions of expansion valve.

(take care excessive heating)

To remove welded portion, cut the band holding it and

✻

remove the rubber tube.

Photo 12

Photo 13

Oil separator

Welding parts

Rubber tube

Fixing screws

Band

Solenoid valve coil

Expansion valve

Welding parts

OPERATING PROCEDURE PHOTOS

13. High pressure sensor (63HS)disassembly procedures:

(1) Remove the side panel (See photo 1). (2) Remove the high pressure sensor wire. (3) Recover gas from the refrigerant circuit. (4) Remove the welded portion of high pressure sensor. (5) Remove the mounting screw fastening the high

pressure sensor mounting plate (1 pc : 4o10).

(6) Remove the high pressure sensor mounting screws

(2 pcs : 4o10).

Photo 14

Separator

High pressure sensor mount

fixing screw

High pressure sensor

Welding part

14. Capillary tube disassembly procedures:

(1) Remove the side panel (See photo 1). (2) Remove the top panel (See photo 1). (3) Remove the electrical parts box (See photo 5 or 6). (4) Recover gas from the refrigerant circuit. (5) Remove the field piping from the unit (liquid side) (6) Remove the welded portions of capillary tube.

To remove welded portions, cut the band holding it and

✻

remove the rubber tube.

Photo 15

Capillary tube 3Capillary tube 4

Capillary tube 1 Capillary tube 2

13 PARTS LIST

1 2 3 4 5 6 7 8

9 10 11 12 13

Part No. Specification

No.

Wiring

Diagram

Symbol

Recommended

Q,ty

Price

Unit

Amount

Part Name

Q,ty/set

PUMYP125VMA

Remarks

(Drawing No.)

FAN MOTOR CAPACITOR MULTI CIRCUIT BOARD FUSE POWER CIRCUIT BOARD THERMISTOR (RADIATOR PANEL) NOISE FILTER CIRCUIT BOARD TERMINAL BLOCK TERMINAL BLOCK REACTOR RESISTOR (RUSH CURRENT PROTECTION) ACTIVE FILTER MODULE SMOOTHING CAPACITOR MAGNETIC CONTACTOR

3.5µF 440VAC

6.3A 250V

3P(M1, M2, S) 3P(L, N, ;)

1,600µ / 400WV S-U12 230V

2 1 2 1 2 1 2 1 4 1 1 1 1

C1,2 M.B. F1, F2 P.B. THHS A/B N.F . TB3,7 TB1 DCL1,2,3,4 RS ACTE CE 52C

R01 580 255 T7W E19 315 T7W 520 239 T7W E08 313 R01 E65 202 T7W E04 346 T7W A12 716 T7W A13 716 T7W E01 259 T7W E01 234 T7W E00 233 T7W E05 254 T7W E02 259

ELECTRICAL PARTS PUMY-P125VMA

ELECTRICAL PARTS PUMY-P125YMA PUMY-P125YMA1

VARISTOR

Part No. Specification

No.

R01 580 255

T7W E02 239

T7W 520 239

T7W E11 315

T7W E18 315 T7W E00 259

T7W E00 311

T7W 249 708

T7W E00 234

T7W A12 716

T7W E10 716

T7W E01 346

T7W E03 254

T7W E00 349

T7W E00 292

R01 36A 202

FAN MOTOR CAPACITOR FUSE FUSE MULTI CONTROLLER BOARD MULTI CONTROLLER BOARD REACTOR POWER SUPPLY BOARD MAGNETIC CONTACTOR RESISTOR BOARD TERMINAL BLOCK TERMINAL BLOCK NOISE FILTER CAPACITOR VARISTOR DIODE MODULE THERMISTOR (IPM RADIATOR PANEL)

Part Name

3.5µF 440VAC 2A 250V

6.3A 250V

S-U12 230V

3P(M1,M2,S) 5P(L1,L2,L3,N,;)

Q,ty/set

PUMY-P125

YMA YMA

1 1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

C1,2 FUSE2 FUSE1

DCL

52C

TB3,7 TB1 NF C03 ZNR DM THHS

Recom-

mended

Q,ty

Unit

Price

Amount

FUNCTIONAL PARTS PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA1

22 21

20 19

18 17 16

15 14

345

Part number that is circled is not shown in the figure.

Part No. SpecificationNo.

R01 KL5 115

R01 30L 097

R01 35A 202

R01 E00 268

R01 E30 202

R01 J01 425 T97 500 218

T97 500 216

R01 E02 410

R01 E03 411

R01 38A 440

R01 42L 450

R01 28W 413

T7W E02 242

R01 E06 403

R01 KP1 467 T7W E37 202

R01 E29 202

T7W E13 425

R01 38A 425

R01 E10 425

R01 E02 428

T7W E00 242

R01 37A 490 R01 05A 401

R01 V39 401 T7W E36 202

R01 E31 202

R01 E23 408

T7W E19 763

T7W E18 763

R01 E00 405

PROPELLER NUT

THERMISTOR (DISCHARGE TEMPERATURE DETECTION)

HIGH PRESSURE SENSOR

THERMISTOR (PIPE TEMPERATURE DETECTION / JUDGING DEFROST)

CAPILLARY TUBE 1 COMPRESSOR COMPRESSOR BALL VALVE BALL VALVE ACCUMULATOR STRAINER CHARGE PLUG 4-WAY COIL 4-WAY VALVE MUFFLER

THERMISTOR (LOW PRESSURE SATURATED TEMPERATURE DETECTION) THERMISTOR (LOW PRESSURE SATURATED TEMPERATURE DETECTION)

CAPILLARY TUBE 2 CAPILLARY TUBE 3 CAPILLARY TUBE 4 SOLENOID VALVE SOLENOID COIL OIL SEPARATOR EXPANSION VALVE EXPANSION VALVE

THERMISTOR (OUTDOOR TEMPERATURE DETECTION) THERMISTOR (OUTDOOR TEMPERATURE DETECTION)

HEAT EXCHANGER FAN MOTOR FAN MOTOR DRYER

Part Name

[2.5O[0.6O500mm EEV-48FAM EEV-48FAK 3/8" 3/4"

[2.5O[0.6O500mm [4.0O[3.0O200mm [4.0O[2.4O360mm

PA6V60-GD PA6V60-GC

Q,ty/set

PUMY-P125

YMA

VMA

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

TH1 63HS TH5

MC MC

21S4

TH2 TH2

SV1

LEV(A) SLEV TH6 TH6

MF2 MF1

Recommended

Q,ty

Unit

Price

Amount

STRUCTURAL PARTS PUMY-P125VMA PUMY-P125YMA PUMY-P125YMA1

2 1 14 13 SCREW

8910

45 3 7

No.

Part No. Part Name Specification

R01 KN4 675

R01 38A 668

R01 KL5 655

R01 38A 686

R01 E01 130

5 6

T7W E06 658

R01 38A 682

R01 38A 661

R01 KP2 698

T7W E00 641

R01 38A 641

R01 KP2 662

—

FAN GUARD FRONT PANEL PANEL HANDLE BASE MOTOR SUPPORT SEPARATOR ASSY PANEL COVER REAR PANEL SERVICE PANEL REAR GUARD MOTOR PLATE TOP PANEL TOP PANEL SCREW (5O10) SIDE PANEL LEFT

PUMY-P125

VMA

2 1 3 1 1 1 1 1 1 1 1 1

Q,ty/set

YMA

2 1 3 1 1 1 1 1 1 1 1

(Drawing No.)

YMA1

2 1 3 1 1 1

(BG00G362G27) 1 1 1 1 1

(BG00C965G20)

(Z004B293H10)

Remarks

Wiring

Diagram

Symbol

Recommended

Q,ty

Unit

Price

Amount

HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

New publication, effective Sep. 2003 Specifications subject to change without notice.

Mitsubishi Electric PUMY-P125VMA Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual