Mitsubishi PEFY-P72NMHSU-E, PEFY-P96NMHSU-E Service Manual

TECHNICAL & SERVICE MANUAL

Model nameModel name

PEFY-P72NMHSU-E
PEFY-P96NMHSU-E

2011

AIR CONDITIONERS

ii

HWE10170 GB

Safety Precautions

Read before installation and performing electrical work

Symbol explanations

Thoroughly read the following safety precautions prior to installation.
Observe these safety precautions for your safety.
This equipment may have adverse effects on the equipment on the same power supply system.
Contact the local power authority before connecting to the system.

WARNING

This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or death.

CAUTION

This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or dam-

age to the unit.

Indicates an action that must be avoided.

Indicates important instructions.

Indicates a parts that requires grounding.

Indicates that caution must be taken with rotating parts. (This symbol is on the main unit label.) <Color: Yellow>

Indicates that the parts that are marked with this symbol pose a risk of electric shock. (This symbol is on the main
unit label.) <Color: Yellow>

WARNING

Carefully read the labels affixed to the main unit.

WARNING

Ask your dealer or a qualified technician to install the unit.

Improper installation by the user may result in water leak­age, electric shock, or fire.

Properly install the unit on a surface that can withstand its
weight.

Unit installed on an unstable surface may fall and cause in­jury.

Only use specified cables. Securely connect each cable so
that the terminals do not carry the weight of the cable.

Improperly connected cables may produce heat and start a
fire.

Take appropriate safety measures against wind gusts and
earthquakes to prevent the unit from toppling over.

Improper installation may cause the unit to topple over and
cause injury or damage to the unit.

Only use accessories (i.e., air cleaners, humidifiers, electric
heaters) recommended by Mitsubishi Electric.

Do not make any modifications or alterations to the unit.
Consult your dealer for repair.

Improper repair may result in water leakage, electric shock,
or fire.

Do not touch the heat exchanger fins with bare hands.

The fins are sharp and pose a risk of cuts.

In the event of a refrigerant leak, thoroughly ventilate the
room.

If gaseous refrigerant leaks out and comes in contact with
an open flame, toxic gases will be generated.

Properly install the unit according to the instructions in the
Installation Manual.

Improper installation may result in water leakage, electric
shock, or fire.

Have all electrical work performed by an authorized electri­cian according to the local regulations and the instructions
in this manual. Use a dedicated circuit.

Insufficient power supply capacity or improper installation
of the unit may result in malfunctions of the unit, electric
shock, or fire.

ii

HWE10170 GB

Precautions for handling units for use with R410A

WARNING

Keep electrical parts away from water.

Wet electrical parts pose a risk of electric shock, smoke, or
fire.

Securely attach the control box cover.

If the cover is not installed properly, dust or water may infil­trate and pose a risk of electric shock, smoke, or fire.

Only use the type of refrigerant that is indicated on the unit
when installing or relocating the unit.

Infiltration of any other types of refrigerant or air into the unit
may adversely affect the refrigerant cycle and may cause
the pipes to burst or explode.

When installing the unit in a small space, take appropriate
precautions to prevent leaked refrigerant from reaching the
limiting concentration.

Leaked refrigerant gas will displace oxygen and may cause
oxygen starvation. Consult your dealer before installing the
unit.

Consult your dealer or a qualified technician when moving
or reinstalling the unit.

Improper installation may result in water leakage, electric
shock, or fire.

After completing the service work, check for a refrigerant
leak.

If leaked refrigerant is exposed to a heat source, such as a
fan heater, stove, or electric grill, toxic gases will be gener­ated.

Do not try to defeat the safety features of the unit.

Forced operation of the pressure switch or the temperature
switch by defeating the safety features for these devices, or
the use of accessories other than the ones that are recom­mended by Mitsubishi Electric may result in smoke, fire, or
explosion.

Consult your dealer for proper disposal method.

Do not use a leak detection additive.

CAUTION

Do not use the existing refrigerant piping.

A large amount of chlorine that may be contained in the re­sidual refrigerant and refrigerator oil in the existing piping
may cause the refrigerator oil in the new unit to deteriorate.

Use refrigerant piping materials made of phosphorus deox­idized copper. Keep the inner and outer surfaces of the
pipes clean and free of such contaminants as sulfur, oxides,
dust, dirt, shaving particles, oil, and moisture.

Contaminants in the refrigerant piping may cause the refrig­erator oil to deteriorate.

Store the piping materials indoors, and keep both ends of
the pipes sealed until immediately before brazing. (Keep el­bows and other joints wrapped in plastic.)

Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerator oil to deteriorate or cause the
compressor to malfunction.

Use a small amount of ester oil, ether oil, or alkyl benzene
to coat flares and flanges.

Infiltration of a large amount of mineral oil may cause the re­frigerator oil to deteriorate.

Charge the system with refrigerant in the liquid phase.

If gaseous refrigerant is drawn out of the cylinder first, the
composition of the remaining refrigerant in the cylinder will
change and become unsuitable for use.

Only use R410A.

The use of other types of refrigerant that contain chloride
may cause the refrigerator oil to deteriorate.

Use a vacuum pump with a check valve.

If a vacuum pump that is not equipped with a check valve is
used, the vacuum pump oil may flow into the refrigerant cy­cle and cause the refrigerator oil to deteriorate.

Prepare tools for exclusive use with R 410A. Do not use the
following tools if they have been used with the conventional
refrigerant: gauge manifold, charging hose, gas leak detec­tor, check valve, refrigerant charge base, vacuum gauge,
and refrigerant recovery equipment.

If the refrigerant or the refrigerator oil that may be left on these
tools are mixed in with R410A, it may cause the refrigerator oil
in the new system to deteriorate.
Infiltration of water may cause the refrigerator oil to deteriorate.
Leak detectors for conventional refrigerants will not detect an
R410A leak because R410A is free of chlorine.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of the refrigerant
in the cylinder will change and become unsuitable for use.

Exercise special care when handling tools for use with R410A.

Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerator oil to deteriorate.

CONTENTS

HWE10170 GB

[1] Components and Functions...................................................................................................... 1

[2] Specifications............................................................................................................................ 3

[3] Sound pressure levels .............................................................................................................. 5

[4] Fan performance and corrected air flow ................................................................................... 8

[5] Outlines and Dimensions........................................................................................................ 10

[6] Wiring Diagram ....................................................................................................................... 11

[7] Refrigerant system diagram.................................................................................................... 12

[8] Troubleshooting ...................................................................................................................... 13

[9] Disassembly Procedure.......................................................................................................... 60

[10] Optional parts ....................................................................................................................... 67

HWE10170 GB

1- 1 -

HWE10170 GB

XI Indoor Unit

[1] Components and Functions

1. Indoor Unit

2. Remote Controller

[PAR-21MAA]
Once the operation mode is selected, the unit will remain in the selected mode until changed.

(1) Remote Controller Buttons

Keep the remote controller out of direct sunlight to ensure accurate measurement of room temperature.
The thermistor at the lower right-hand section of the remote controller must be free from obstructions to ensure accurate mea-

surement of room temperature.

(1) In case of rear inlet

1 [Set Temperature] Button 7 [Vane Control] Button
2 [Timer Menu] Button 8 [Ventilation] Button

[Monitor/Set] Button [Operation] Button

3 [Mode] Button 9 [Check/Clear] Button

[Back] Button 10 [Test Run] Button

4 [Timer On/Off] Button 11 [Filter] Button

[Set Day] Button [ ] Button

5 [Louver] Button 12 [ON/OFF] Button

[Operation] Button 13 Position of built-in room thermistor

6 [Fan Speed] Button 14 [Set Time] Button

Air inlet

Air outlet

2- 2 -

HWE10170 GB

(2) Remote Controller Display

A Current time/Timer time I Louver swing

B Centralized control indicator J Ventilation

C Timer OFF indicator K Filter sign

D Timer mode indicator L Sensor position

E Operation mode display: COOL, DRY, AUTO,

FAN, HEAT

M Room temperature

F Function mode indicator N Vane setting

G Preset temperature O Fan speed

H Power indicator P Operation lamp

3- 3 -

HWE10170 GB

[2] Specifications

1. Specifications

*1 <Cooling> Indoor temperature: 80°FD.B./67°FW.B. (26.7°CD.B./19.4°CW.B.) Outdoor temperature: 95°FD.B.(35°CD.B.)

<Heating> Indoor temperature: 70°FD.B.(21.1°CD.B.) Outdoor temperature: 47°FD.B./43°FW.B. (8.3°CD.B./6.1°CW.B.)

*2 Measured at a power supply voltage of 230 V

Model PEFY-P72NMHSU-E PEFY-P96NMHSU-E

Power supply

Voltage V 1-phase 208-230

Frequency Hz 50/60

Capacity*1 Cooling kW[BTU/h] 21.1 (72,000) 28.1 (96,000)

Heating kW[BTU/h] 23.4 (80,000) 31.7 (108,000)

Power consumption

50Pa

[0.20in.WG]

Cooling kW

0.43 0.59

Heating kW

100Pa

[0.40in.WG]

Cooling kW

0.52 0.70

Heating kW

150Pa

[0.60in.WG]

Cooling kW

0.63 0.82

Heating kW

200Pa

[0.80in.WG]

Cooling kW

0.75 0.95

Heating kW

250Pa

[1.00in.WG]

Cooling kW

0.89 0.97

Heating kW

Current consumption
*2

50Pa

[0.20in.WG]

Cooling A

2.31 3.08

Heating A

100Pa

[0.40in.WG]

Cooling A

2.79 3.75

Heating A

150Pa

[0.60in.WG]

Cooling A

3.32 4.43

Heating A

200Pa

[0.80in.WG]

Cooling A

3.95 5.10

Heating A

250Pa

[1.00in.WG]

Cooling A

4.81 5.29

Heating A

External finish Galvanized

Dimensions Height mm[in.] 470 (18-9/16)

Width mm[in.] 1250 (49-1/4)

Depth mm[in.] 1120 (44-1/8)

Net weight 97 100

Heat exchanger Cross fin (Alminium fin and copper tube)

Fan Type Sirocco fan x 2

Airflow rate (H-M-L)

m

3

/min

[cfm]

72-61-50

2542-2154-1766

84-71-58

2966-2507-2048

External static
pressure

Pa

[in.WG]

(50)/(100)/150/(200)/(250)

(0.20)/(0.40)/0.60/(0.80)/(1.00)

Motor Output kW 0.87

Air filter Option

Refriferant pipe dimensions Gas

(Brazed connection)

mm ø19.05 ø22.2

[in.] ø3/4 ø7/8

Liquid
(Brazed connection)

mm ø9.52

[in.] ø3/8

Drain pipe dimensions mm O.D.32

[in.] 1-1/4

Operating noise (H-M-L) 50Pa [0.20in.WG] dB(A) 39-35-32 42-38-35

100Pa [0.40in.WG] 41-37-34 44-40-37

150Pa [0.60in.WG] 43-39-36 46-42-39

200Pa [0.80in.WG] 45-41-38 48-44-41

250Pa [1.00in.WG] 47-43-40 50-46-43

*

Measured in anechoic room.

2m

1m

Aux. duct

1.5m

Measurement location 2

4- 4 -

HWE10170 GB

2. Electrical component specifications

Component Symbol

Room temperature
thermistor

TH21 Resistance 32°F (0°C)/15k, 50°F (10°C)/9.6k, 68°F (20°C)/6.3k,

77°F (25°C)/5.4k, 86°F (30°C)/4.3k, 104°F (40°C)/3.0k

Liquid pipe thermistor TH22 Resistance 32°F (0°C)/15k, 50°F (10°C)/9.6k, 68°F (20°C)/6.3k,

77°F (25°C)/5.4k, 86°F (30°C)/4.3k, 104°F (40°C)/3.0k

Gas pipe thermistor TH23 Resistance 32°F (0°C)/15k, 50°F (10°C)/9.6k, 68°F (20°C)/6.3k,

77°F (25°C)/5.4k, 86°F (30°C)/4.3k, 104°F (40°C)/3.0k

Fuse (INV board) F01 250V 15A

Fuse (NF board) F001 250V 10A

Fuse (NF board) F100 250V 3.15A

Fan motor MF 8-pole, Output 870W ERC8801AB

Linear expansion valve

LEV1
LEV2

12VDC Stepping motor drive port diameter ø3.2 (0~2000 pulse)

Power supply terminal
block

TB2

(L, N, ) 450V 30A

5- 5 -

HWE10170 GB

[3] Sound pressure levels

1. Sound pressure level

Ceiling concealed

2. NC curves

PEFY-P72NMHSU-E

Measurement point

Inlet

Outlet

1.5m

2m

1m

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:50Pa, 0.20[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:100Pa, 0.40[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:150Pa, 0.60[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:200Pa, 0.80[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

6- 6 -

HWE10170 GB

PEFY-P96NMHSU-E

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:250Pa, 1.00[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:50Pa, 0.20[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:100Pa, 0.40[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:150Pa, 0.60[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:200Pa, 0.80[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

7- 7 -

HWE10170 GB

Approximate minimum
audible limit on
continuous noise

High
Middle
Low

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

NC-40

NC-30

NC-20

Octave band center frequencies (Hz)

External Static Pressure:250Pa, 1.00[in.WG]
Power Source: 208, 230V, 50Hz/60Hz

8- 8 -

HWE10170 GB

[4] Fan performance and corrected air flow

PEFY-P72NMHSU-E

Static pressure (Pa)

[in.WG]

Airflow rate (m3/min)

[cfm]

External static pressure :50Pa, 0.20[in.WG]
Power source:208, 230V, 50Hz/60Hz

Middle

High

Low

Limit

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[2119]

60

[1942]

55

[1412]

40

[1766]

50

[1589]

45

10

[0.04]

20

[0.08]

30

[0.12]

40

[0.16]

50

[0.20]

60

[0.24]

70

[0.28]

80

[0.32]

0

[0]

Static pressure (Pa)

[in.WG]

Airflow rate (m3/min)

[cfm]

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[2119]

60

[1942]

55

[1412]

40

[1766]

50

[1589]

45

30

[0.12]

40

[0.16]

50

[0.20]

60

[0.24]

70

[0.28]

80

[0.32]

90

[0.36]

100

[0.40]

110

[0.44]

120

[0.48]

130

[0.52]

External static pressure :100Pa, 0.40[in.WG]
Power source:208, 230V, 50Hz/60Hz

Middle

High

Low

Limit

External static pressure :150Pa, 0.60[in.WG]
Power source:208, 230V, 50Hz/60Hz

Middle

High

Low

Limit

Static pressure (Pa)

[in.WG]

Airflow rate (m3/min)

[cfm]

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[2119]

60

[1942]

55

[1412]

40

[1766]

50

[1589]

45

60

[0.24]

70

[0.28]

80

[0.32]

90

[0.36]

100

[0.40]

110

[0.44]

120

[0.48]

130

[0.52]

140

[0.56]

150

[0.60]

160

[0.64]

170

[0.68]

180

[0.72]

External static pressure :200Pa, 0.80[in.WG]
Power source:208, 230V, 50Hz/60Hz

Middle

High

Low

Limit

Static pressure (Pa)

[in.WG]

Airflow rate (m3/min)

[cfm]

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[2119]

60

[1942]

55

[1412]

40

[1766]

50

[1589]

45

80

[0.32]

90

[0.36]

100

[0.40]

110

[0.44]

120

[0.48]

130

[0.52]

140

[0.56]

150

[0.60]

160

[0.64]

170

[0.68]

180

[0.72]

190

[0.76]

200

[0.80]

210

[0.84]

220

[0.88]

230

[0.92]

External static pressure :250Pa, 1.00[in.WG]
Power source:208, 230V, 50Hz/60Hz

Middle

High

Low

Limit

Static pressure (Pa)

[in.WG]

Airflow rate (m3/min)

[cfm]

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[2119]

60

[1942]

55

[1412]

40

[1766]

50

[1589]

45

100

[0.40]

110

[0.44]

120

[0.48]

130

[0.52]

140

[0.56]

150

[0.60]

160

[0.64]

170

[0.68]

180

[0.72]

190

[0.76]

200

[0.80]

210

[0.84]

220

[0.88]

230

[0.92]

240

[0.96]

250

[1.00]

260

[1.04]

270

[1.09]

9- 9 -

HWE10170 GB

PEFY-P96NMHSU-E

Middle

High

Low

Limit

Static pressure (Pa)

[in.WG]

Airflow rate (m3/min)

[cfm]

External static pressure :50Pa, 0.20[in.WG]
Power source:208, 230V, 50Hz/60Hz

[3178]

90

[3001]

85

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[1766]

50

[2119]

60

[1942]

55

10

[0.04]

20

[0.08]

30

[0.12]

40

[0.16]

50

[0.20]

60

[0.24]

70

[0.28]

80

[0.32]

90

[0.36]

100

[0.40]

0

[0]

Middle

High

Low

Limit

Static pressure (Pa)

[in.WG]

Airflow rate (m3/min)

[cfm]

30

[0.12]

40

[0.16]

50

[0.20]

60

[0.24]

70

[0.28]

80

[0.32]

90

[0.36]

100

[0.40]

110

[0.44]

120

[0.48]

130

[0.52]

140

[0.56]

External static pressure :100Pa, 0.40[in.WG]
Power source:208, 230V, 50Hz/60Hz

[3178]

90

[3001]

85

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[1766]

50

[2119]

60

[1942]

55

External static pressure :150Pa, 0.60[in.WG]
Power source:208, 230V, 50Hz/60Hz

Static pressure (Pa)

[in.WG]

60

[0.24]

70

[0.28]

80

[0.32]

90

[0.36]

100

[0.40]

110

[0.44]

120

[0.48]

130

[0.52]

140

[0.56]

150

[0.60]

160

[0.64]

170

[0.68]

180

[0.72]

190

[0.76]

Middle

High

Low

Limit

Airflow rate (m3/min)

[cfm]

[3178]

90

[3001]

85

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[1766]

50

[2119]

60

[1942]

55

Middle

High

Low

Limit

Airflow rate (m3/min)

[cfm]

External static pressure :200Pa, 0.80[in.WG]
Power source:208, 230V, 50Hz/60Hz

Static pressure (Pa)

[in.WG]

80

[0.32]

90

[0.36]

100

[0.40]

110

[0.44]

120

[0.48]

130

[0.52]

140

[0.56]

150

[0.60]

160

[0.64]

170

[0.68]

180

[0.72]

190

[0.76]

200

[0.80]

210

[0.84]

220

[0.88]

230

[0.92]

240

[0.96]

[3178]

90

[3001]

85

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[1766]

50

[2119]

60

[1942]

55

Middle

High

Low

Limit

Airflow rate (m3/min)

[cfm]

External static pressure :250Pa, 1.00[in.WG]
Power source:208, 230V, 50Hz/60Hz

Static pressure (Pa)

[in.WG]

100

[0.40]

110

[0.44]

120

[0.48]

130

[0.52]

140

[0.56]

150

[0.60]

160

[0.64]

170

[0.68]

180

[0.72]

190

[0.76]

200

[0.80]

210

[0.84]

220

[0.88]

230

[0.92]

240

[0.96]

250

[1.00]

260

[1.04]

270

[1.09]

280

[1.13]

290

[1.17]

[3178]

90

[3001]

85

[2825]

80

[2648]

75

[2472]

70

[2295]

65

[1766]

50

[2119]

60

[1942]

55

10- 10 -

HWE10170 GB

[5] Outlines and Dimensions

Air inlet Air outlet

(DUCT)

(7/16)

(2-3/8)

(3-3/16)

(2-3/8)

(3-15/16x3=11-13/16)

(3-15/16x3=11-13/16)

(1-3/4)

(9-13/16)

(DUCT)

(7/16)

(5/8)

(3-15/16)

(3-15/16)

(15/16)

(3-15/16)

(Actual length)

Drain Piping.

(21-11/16)

(7-7/8~11-13/16)

(17-3/4)

(5-15/16~7-7/8)

(17-3/4)

2X4-ø3(1/8) holes

2X11-ø3(1/8) holes

Drain hole

Drain hole

Control box

(Power source)

Terminal block

(MA remocon)

(Transmission wiring)

(Power souse wiring)

(Normal type)

(Option)

(Transmission)

Suspension bolt hole

Terminal blockKnockout hole ø22.2(7/8)

Knockout hole ø22.2(7/8)

Terminal block

4-14X30(9/16x3/16) Slot

2X4-ø3(1/8) holes

2X11-ø3(1/8) holes

Make the access door

at the appointed position properly

for service maintenance.

Access door Ceiling surface

Access door

Note2

Note3

Required space for service and maintenance.

MODEL

PEFY-P72NMHSU-E

PEFY-P96NMHSU-E

ø

19.05(3/4)

ø

22.2(7/8)

ø

9.52(3/8)

Drain hose 32mm

(1-1/4inch)

<flexible joint>

<accessory>

Note 1.Use M10 screw for the suspension bolt (field supply).

2.Keep the service space for the maintenance from the bottom

when the heat exchanger is cleaned.

3.Keep the service space for the maintenance from the bottom

when the fan motor is changed.

4.Make sure to install the air filter (field supply) on the air intake side.

In case field supplied air filter is used, attach it

where the filter service is easily done.

Unit:mm(in.)

Unit:mm(in.)

249

95(3-4/3)

342(13-1/2)

80

170(6-3/4±1/4)

23

100

470(18-9/16)

20(13/16)

102(4-1/16)

105(4-3/16)

420(16-9/16)

1100(43-5/16)(DUCT)

1250(49-1/4)

1372(54-1/16)

1124(44-5/16)

15

10

100x10=1000(3-15/16x10=39-3/8)

100(3-15/16)

50(2)

60

1326(52-1/4)(Suspension bolt pitch)

1034(40-3/4)(Suspension bolt pitch)

340(13-7/16)

1100(43-5/16)(DUCT)

100

100

29(1-3/16)

41(1-5/8)

1067(42-1/16)

24(1)

1120(44-1/8)

489(19-5/16)

327(12-7/8)

44

164(6-1/2)

30(1-3/16)

15(5/8)

100X3(=300)

100(3-15/16)

20(13/16)

100(3-15/16)

10

100x3=300

60

100x10=1000(3-15/16x10=39-3/8)

50(2)

100(3-15/16)

More than 20(13/16)

More than 20(13/16)

550

50(2)

150~200

50(2)

50(2)

450

800(31-1/2)

450

200~300

1350(53-3/16)

730(28-3/4)

PEFY-P72,96NMHSU-E

Gas pipe

Liquid pipe

Gas pipe

Liquid pipe

Drain hose

Drain hose

11- 11 -

HWE10170 GB

[6] Wiring Diagram

0

1

2

3

4

5

6

7

8

9

0

1

2

3

4

5

6

7

8

9

0

F

E

D

C

B

A

9

8

7

6

5

4

3

2

1

642

1

3

1

2

2

2

1

1

25431

21

85431

2131442331

4321

6

6

5

5

5

4

4

3

3

3

2

2

1

1

1

54321

12345

1

2

76543213

3

1

1

1

2

3

4

5

3

3

1

1

1

3

8

7

1

6

6

5

3

43

5

3

2

1

1

3

3

1

1

CN25

F01

IPM

(BLUE)

CNCT2

CNFAN

CNP

X010

X100

CNR1

(RED)

(RED)

CNACL

ZNR

003

C015

C016

ZNR

002

DSA

001

ZNR

001

F001

F100

CNPW1

CNRSC

CNRSP

CNXC1

CNXB1

CNDB

CNPW2

CN18V

(GREEN)

CNTH

(RED)

CNCT1

CNRS2

CN15V

CNVDC

CNDP

CNINV

NF

CNXC2

CN100

CN41

CN90

LED2

LED1

CN3A

(BLUE)

CN2M

(BLUE)

CN7V

CN60

CN44

CN4F CN4F

CN20

(RED)

CN32

SW3

SWC

SW5

SWA

SWE

ONOFF

SW2SW1

SW4

SW11SW12SW14

1s

DIGIT DIGIT

( ) ( ) ( )

10ths

BRANCH

No.

CNXB2

POWER SUPPLY

AC208-230V

60Hz

Note 1

Note 1

ACL

2
2

1
1

INSIDE SECTION OF CONTROL BOX

TO MA REMOTE

CONTROLLER

TO OUTDOOR UNIT

BC CONTROLLER

REMOTE CONTROLLER

MF

DP

MS

3

~

M

1

~

UVW

R

NF.B.

INV.B.

I.B.

P.B .

TB2

DB01

ACCT

TB5

TB15

LEV1

LEV2

THHS

TH21

TH22FSTH23

L1

3
4

2

1

33112

2

M1M2S(SHIELD)

L2

G

1

2

DB01 RNF.B.

TB2

TB5

TB15

P. B .

I.B.

ACCT

INV.B.

PARTS LOCATION

Inside < > is the optional parts.

NOTE:1.The part of thin dotted line indicates the circuit for optional parts.

2.To perform a drainage test for the drain pump turn on the SWE

on the control board while the indoor unit is being powerd.

*Be sure to turn off the SWE after completing a drainage test or test run.

3.The wirings to TB2,TB5,TB15 shown in dotted line are field work.

4.Mark indicates terminal block, connector.

5.Use copper supply wire.

SYMBOL NAME

SYMBOL EXPLANATION

Aux. relay

X010,X100

Var ist or

Arrester

Intelligent power module

Fuse(AC250V 15A)

DSA001

IPM

F01

Electronic linear expan.valve

LEV1,LEV2

F001

F100

NF

Fuse(AC250V 10A)

Fuse(3.15A)

Noise filter

Switch (for mode selection)

Switch (for capacity code)

Switch (for mode selection)

Switch (for model selection)

Switch (for mode selection)

Switch (1s digit address set)

Switch (10ths digit address set)

Switch (BRANCH No.)

Switch (for static pressure selection)

Switch (for static pressure selection)

TB2

TB5

TB15

CN25

I.B.

NF.B.

INV.B.

P. B.

TH21

TH22

TH23

THHS

<FS>

Connector

Indoor controller board

Noise filter board

Inverter board

Power supply board

Power source terminal block

Transmission terminal block

Transmission terminal block

Float switch

Thermistor(piping temp.detection/liquid)

Thermistor(piping temp.detection/gas)

Thermistor(heatsink)

Thermistor(inlet air temp.detection)

MF

Fan motor

AC reactor (Power factor improvement)

Resistor

Diode bridge

LED (Power supply)

Current Sensor (AC)

LED (Remote controller supply)

ACL

R

DB01

LED1

ACCT

LED2

Connector (emergency operation)

Connector (Remote switch)

CN32

Connector (HA terminal-A)

CN41

Connector (Wireless)

CN90

SW1

SW2

SW3

SW4

SW5

SW11

SW12

SW14

SWA

SWC

SWE

ZNR01~

ZNR03

Drain pump

<DP>

t°

t°

t°

t°

U

UU

M

M

PEFY-P72,96NMHSU-E

12- 12 -

HWE10170 GB

[7] Refrigerant system diagram

(A) Gas pipe thermistor TH23

(B) Gas pipe

(C) Liquid pipe

(D) Brazed connections

(E) Strainer (#100 mesh)

(F) Linear expansion valve

(G) Liquid pipe thermistor TH22

(H) Heat exchanger

(I) Room temperature thermistor TH21

(H)

(I)

(F)

(E)

(E)

(C)

(G)

(A)

(D)

(B)

13- 13 -

HWE10170 GB

[8] Troubleshooting

1. Check methods

1. Component and check points
(1) Thermistor

Room temperature thermistor (TH21)
Liquid pipe thermistor (TH22)
Gas pipe thermistor (TH23)

Disconnect the connector and measure the resistance between terminals with a tester.
(Ambient temperature 50°F (10°C) - 86°F (30°C))

1) Thermistor characteristic graph

(2) Fan motor

Refer to the page on "DC fan motor (fan motor/INV board)."(page 47)

(3) Linear expansion valve

Refer to the page on "LEV". ([8] 4)(page 51)

Normal Abnormal

4.3kΩ - 9.6kΩ Open or short

(Refer to the thermistor characteristic graph below.)

Low-temperature thermistor

Room temperature thermistor (TH21)
Liquid pipe thermistor (TH22)
Gas pipe thermistor (TH23)

Thermistor R

0

= 15 kΩ 3%

Multiplier of B = 3480 kΩ 2%

32°F (0°C) 15kΩ
50°F (10°C) 9.6kΩ
68°F (20°C) 6.3kΩ
77°F (25°C) 5.2kΩ
86°F (30°C) 4.3kΩ
104°F (40°C) 3.0kΩ

(A) Temperature °F (°C)

(B) Resistance (kΩ)

Rt = 15 exp { 3480( ) }

1

273+t

1

273

0

10

20

30

40

50

-20 -10 0 10 20 30 40 50

(A)

(B)

14- 14 -

HWE10170 GB

2. Error Code Lists

Error
Code

Prelimi-

nary
error
code

Error

(prelim-

inary)
detail

code

Error code definition

Searched unit

Notes

0403

4300
4305

01
05

(Note)

Serial communication error O O

0900 - - Test run O

1102 1202 - Discharge temperature fault O

1301 - - Low pressure fault O

1302 1402 - High pressure fault O

1500 1600 - Refrigerant overcharge O

- 1605 - Preliminary suction pressure fault O

2500 - - Drain sensor submergence O

2502 - - Drain pump fault O

2503 - - Drain sensor (Thd) fault O O

2600 - - Water leakage O

2601 - - Water supply cutoff O

4102 4152 - Open phase O

4106 - - Transmission power supply fault O

4109 - - Fan operation status detection error O

4115 - - Power supply signal sync error O

4116 - - RPM error/Motor error O O

4220
4225

(Note)

4320
4325

(Note)

[108] Abnormal bus voltage drop O O

[109] Abnormal bus voltage rise O O

[111] Logic error O O

[131] Low bus voltage at startup O

4230
4235

4330
4335

- Heatsink overheat protection O O

4240 4340 - Overload protection O

4250
4255

(Note)

4350
4355

(Note)

[101] IPM error O O

[104] Short-circuited IPM/Ground fault O O

[105] Overcurrent error due to short-circuited motor O O

[106] Instantaneous overcurrent (S/W detection) O O

[107] Overcurrent (effective value) (S/W detection) O O

[121] Position detection error at startup O

[122] Position detection error during operation O

4260 - - Heatsink overheat protection at startup O

5101 1202 -

Temperature sensor
fault

Return air temperature
(TH21)

O

OA processing unit inlet
temperature (TH4)

O

Outdoor unit

Indoor unit

LOSSNAY

Remote controller

15- 15 -

HWE10170 GB

5102 1217 -

Temperature sensor
fault

Indoor unit pipe tempera­ture (TH22)

O

OA processing unit pipe
temperature (TH2)

O

HIC bypass circuit outlet
temperature (TH2)

O

5103 1205 00

Temperature sensor
fault

Indoor unit gas-side pipe
temperature (TH23)

O

OA processing unit gas­side pipe temperature
(TH3)

O

Pipe temperature at
heatexchanger outlet
(TH3)

O

5104 1202 -

Temperature sensor
fault

OA processing unit intake
air temperature (TH1)

O

Outside temperature
(TH24)

O

Detectable
only by the All­Fresh type in­door units

Outdoor unit discharge
temperature (TH4)

O

5105 1204 -

Temperature sensor
fault

Accumulator inlet tempera­ture (TH5)

O

5106 1216 -

Temperature sensor
fault

HIC circuit outlet tempera­ture (TH6)

O

5107 1221 -

Temperature sensor
fault

Outside temperature (TH7) O

5110 1214 01

Temperature sensor
fault

Heatsink temperature
(THHS)

OO

5201 - - High-pressure sensor fault (63HS1) O

5301
5305

4300
4305

[115] ACCT sensor fault O

[117] ACCT sensor circuit fault O O

[119] Open-circuited IPM/Loose ACCT connector O O

[120] Faulty ACCT wiring O

5701 - - Loose float switch connector O

6201 - -

Remote controller board fault (nonvolatile memory
error)

O

6202 - - Remote controller board fault (clock IC error) O

6600 - - Address overlap OOOO

6601 - - Polarity setting error O

6602 - - Transmission processor hardware error OOOO

6603 - - Transmission line bus busy error OOOO

6606 - -

Communication error between device and trans­mission processors

OOOO

6607 - - No ACK error OOOO

Error
Code

Prelimi-

nary
error
code

Error

(prelim-

inary)
detail

code

Error code definition

Searched unit

Notes

Outdoor unit

Indoor unit

LOSSNAY

Remote controller

16- 16 -

HWE10170 GB

The last digit in the check error codes in the 4000's and 5000's and two-digit detail codes indicate if the codes apply to

compressor inverter on fan inverter.
Example
Code 4225 (detail code 108): Bus voltage drop in the fan inverter system
Code 4230 : Heatsink overheat protection in the compressor inverter system

There are no preliminary error codes or detail codes for indoor units.

XII

6608 - - No response error OOOO

6831 - -

MA controller signal reception error (No signal re­ception)

OO

6832 - -

MA remote controller signal transmission error
(Synchronization error)

OO

6833 - -

MA remote controller signal transmission error
(Hardware error)

OO

6834 - -

MA controller signal reception error (Start bit de­tection error)

OO

7100 - - Total capacity error O

7101 - - Capacity code setting error O O O

7102 - - Wrong number of connected units O

7105 - - Address setting error O

7106 - - Attribute setting error O

7110 - -

Connection information signal transmission/recep­tion error

O

7111 - - Remote controller sensor fault O O

7113 - - Function setting error O

7117 - - Model setting error O

7130 - - Incompatible unit combination O

The last digit Inverter system

0 or 1 Compressor inverter system

5 Fan inverter system

Error
Code

Prelimi-

nary
error
code

Error

(prelim-

inary)
detail

code

Error code definition

Searched unit

Notes

Outdoor unit

Indoor unit

LOSSNAY

Remote controller

17- 17 -

HWE10170 GB

1. Error Code

Serial communication error (Indoor unit)

2. Error definition and error detection method

Serial communication cannot be established between the Indoor controller board and the INV board.

3. Cause, check method and remedy
(1) Faulty wiring

Check the following wiring connections.

1) Between Indoor controller board and Power supply board

2) Between Power supply board and INV board

(2) INV board failure or Indoor controller board failure or Power supply board failure

If the error persists after a power reset, replace the INV board, the Indoor controller board, or the Power supply board.

Refer to section [8] Troubleshooting, item 3. DC fan motor (fan motor/INV board) for error codes related to the inverter.
(page 47)

1. Error Code

Drain sensor submergence (Models with a drain sensor)

2. Error definition and error detection method

1) If an immersion of the drain sensor in the water is detected while the unit is in any mode other than the Cool/Dry mode and
when the drain pump goes from OFF to ON, this condition is considered preliminary water leakage. While this error is being
detected, humidifier output cannot be turned on.(Applicable to the units manufactured in or after October 2006)

2) If the immersion of the sensor in the water is detected four consecutive times at an hour interval, this is considered water leak­age, and "2500" appears on the monitor.

3) Detection of water leakage is also performed while the unit is stopped.

4) Preliminary water leakage is cancelled when the following conditions are met:

One hour after the preliminary water leakage was detected, it is not detected that the drain pump goes from OFF to ON.
The operation mode is changed to Cool/Dry.
The liquid pipe temperature minus the inlet temperature is -10°C [-18°F] or less.

3. Cause, check method and remedy

0403

2500

CN100 CNRSC

Indoor controller board Power supply board

CNRSP CNRS2

Power supply board INV board

Cause Check method and remedy

(1) Drain water drainage problem

Clogged drain pump
Clogged drain piping
Backflow of drain water from other units

Check for proper drainage.

(2) Adhesion of water drops to the drain sensor

Trickling of water along the lead wire
Rippling of drain water caused by filter clogging

1) Check for proper lead wire installation.

2) Check for clogged filter.

(3) Failure of the relay circuit for the solenoid valve Replace the relay.

(4) Indoor controller board failure

Drain sensor circuit failure

If the above item checks out OK, replace the indoor control­ler board.