Mitsubishi Electronics PUHY-80TMU-A, 100TMU-A User Manual

AIR CONDITIONERS CITY MULTI Series Y

Models PUHY-80TMU-A, 100TMU-A

Service Handbook

Service Handbook PUHY-80TMU-A, 100TMU-A

- Inadequate connection and fastening may generate heat and cause a fire.

• Prepare for typhoons and other strong winds and earthquakes and install the unit at the specified place.

- Improper installation may cause the unit to topple and result in

injury.

• Always use an air cleaner, humidifier, electric heater, and other accessories specified by Mitsubishi Electric.

- Ask an authorized technician to install the accessories. Im-

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

• Never repair the unit. If the air conditioner must be repaired, consult the dealer.

- If the unit is repaired improperly, water leakage, electric

shock, or fire may result.

• Do not touch the heat exchanger fins.

- Improper handling may result in injury.

• If refrigerant gas leaks during installation work, ventilate the room.

- If the refrigerant gas comes into contact with a flame, poison-

ous gases will be released.

• Install the air conditioner according to this Installation Manual.

- If the unit is installed improperly, water leakage, electric

shock, or fire may result.

• Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and “Interior Wire Regulations”and the instructions given in this manual and always use a special circuit.

- If the power source capacity is inadequate or electric work is

performed improperly, electric shock and fire may result.

• Securely install the cover of control box and the panel.

- If the cover and panel are not installed properly, dust or water

may enter the outdoor unit and fire or electric shock may result.

• When installing and moving the air conditioner to another

refrigerant (R22) specified on the unit.

- If a different refrigerant or air is mixed with the original refriger-

ant, the refrigerant cycle may malfunction and the unit may be damaged.

• If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit even if the refrigerant should leak.

- Consult the dealer regarding the appropriate measures to pre-

vent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.

• When moving and reinstalling the air conditioner, consult the dealer or an authorized technician.

- If the air conditioner is installed improperly, water leakage,

electric shock, or fire may result.

• After completing installation work, make sure that refrigerant gas is not leaking.

- If the refrigerant gas leaks and is exposed to a fan heater,

stove, oven, or other heat source, it may generate noxious gases.

• Do not reconstruct or change the settings of the protection devices.

- If the pressure switch, thermal switch, or other protection de-

vice is shorted and operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or explosion may result.

Before installation and electric work

s Before installing the unit, make sure you read all

the “Safety precautions”.

s The “Safety precautions” provide very important

points regarding safety. Make sure you follow them.

s This equipment may have an adverse effect on

equipment on the same electrical supply system.

s Please report to or take consent by the supply au-

thority before connection to the system.

Symbols used in the text

Warning:

Describes precautions that should be observed to prevent danger of injury or death to the user.

Caution:

Describes precautions that should be observed to prevent damage to the unit.

Symbols used in the illustrations

: Indicates an action that must be avoided. : Indicates that important instructions must be followed. : Indicates a part which must be grounded. : Indicates that caution should be taken with rotating parts.

(This symbol is displayed on the main unit label.) <Color: Yellow>

: Indicates that the main switch must be turned off before

servicing. (This symbol is displayed on the main unit label.) <Color: Blue>

: Beware of electric shock (This symbol is displayed on the

main unit label.) <Color: Yellow>

: Beware of hot surface (This symbol is displayed on the main

unit label.) <Color: Yellow>

ELV

: Please pay attention to electric shock because this

is not Safety Extra Low-Voltage (SELV) circuit. And at servicing, please shut down the power supply

for both Indoor Unit and Outdoor Unit .

Warning:

Carefully read the labels affixed to the main unit.

Warning:

• Ask the dealer or an authorized technician to install the air conditioner.

- Improper installation by the user may result in water leakage,

electric shock, or fire.

• Install the air unit at a place that can withstand its weight.

- Inadequate strength may cause the unit to fall down, resulting

in injuries.

• Use the specified cables for wiring. Make the connections securely so that the outside force of the cable is not applied to the terminals.

Safety precautions

site, do not charge it with a refrigerant different from the

Contents

1 COMPONENT OF EQUIPMENT 1

[1] Appearance of Components 1 [2] Refirigerant Circuit Diagram and Thermal Sensor

Standard operation data

iger 6

[3] PUHY-80, 100TMU-A ELECTRICAL WIRING

DIAGRAM 7

[4] [5] Function of dip SW and rotary SW 11

2 TEST RUN 15

[1] Before Test Run 15 [2] Test Run Method 19

3 GROUPING REGISTRATION OF INDOOR UNITS WITH

M-NET REMOTE CONTROLLER 20

4 CONTROL 26

[1] Control of Outdoor Unit 26 [2] Operation Flow Chart 31 [3] List of Major Component Functions 36 [4] Resistance of Temperature Sensor

Refrigerant Amount and Operating Characteristics

5 REFRIGERANT AMOUNT ADJUSTMENT 39

[1] 39 [2] Adjustment and Judgement of Refrigerant Amount 39

6 TROUBLESHOOTING 44

[1] Principal Parts 44 [2] Self-diagnosis and Countermeasures Depending on the

Check Code Displayed 62

[3] LED Monitor Display......................................................

...............................................................................

............................................................

...............................................................................

...........................................................

....................................................

...........................................

..................................................

...............................................

............................................

.......................................................................

...........

................................

.................................................

..................................................

................................................................

.............................................................

..............................

...............................

.......

Propeller fan

Fan motor

-1-

Rear Controller Box

INV board

MAIN board

Choke coil(L2)

Interrigent Power Module(IPM)

Magnetic contactor(52C)

Capacitor (C1)(Smoothing capacitor)

Gate Amplifier board(G/A board)

Diode stack(DS) Power board

Terminal block(TB7)Transmission

Terminal block (TB3) Transmission

Terminal block (TB1) Power source

-2-

MAIN board

CNS1 M-NET Transmission (DC30V)

CNS2 M-NET Transmission (Centralized control) (DC30V)

CN40 M-NET Transmission Power supply

CNVCC3 Power source for contorl

1-2 DC30 V 1-3 DC30 V 4-6 DC12 V 5-6 DC5 V

CN51 Indication distance 3-4 Compressor ON/

Off

3-4 trouble

LD1 Service LED

CNRS53 Serial transmission to INV board

CN3D

CN3S

CNFAN1 control for MF1

CNAC3

CN20 power source

SW1,2,3,4 Dip Switch

-3-

INV board

CNDC2 1-3 DC310 V

CN15V2 Power supply IPM control

1-2 DC15 V 5-6 DC15 V 9-0 DC15 V C-D DC15 V

CNL2 Choke coil

CNRS2

Serial transmission

to MAIN board

CNAC2 Power source

1 L2 5 N

CNFAN

Control for

MF1

CN52C

Control for

52C

CNVCC2 power supply

CNCT

CNVCC4

CNTH

CNDR2 IPM control signal

SW1

-4-

G/A board

Power board

DC310V

CNDC1 1 - 3 DC310V

CN15V1 Power Supply IPM control

1 - 2 DC15V 5 - 6 DC15V 9 - 0 DC15V C - D DC15V

CNDR1 IPM control signal

-5-

[2] Refirigerant Circuit Diagram and Thermal Sensor

1 PUHY-80TMU-A, 100TMU-A

TH1

TH6

TH7

TH8

TH5

TH2

O/S

63HS

CJ1

Comp

HEXFHEXB

SCC

LEV1

ST7

BV2

ST2

Indoor

Unit

BV1

ST1

CJ2

CV1

ST6

SV1

CP1

SV2

SLEV

CP2

63H

High pressure safety valve

Accumulator

-6-

[3] PUHY-80, 100TMU-A ELECTRICAL WIRING DIAGRAM

CNS2

(3P)

FN3

FN2

1 2

CNS2

(3P)

FN3

FN2

C 1

R 1

52C

DCCT

1 2 3

TH6 TH5TH8TH7TH2 TH1 63HS

SW3-10 are OFF for Model 80.

and ON for Model 100.

Trouble

Compressor ON/OFF

Snow sensor

Compressor ON/OFF

Night mode

Ground

123451234

54321

32132

1 2 3 1 2 3 4 5 6 7 8

1 2

1 2 3

1 2

321

L1L2L3

DS(Diode stack)

Power source

3~208~230V

SLEV

CN20

(7P)

CN03

(3P)

CN02

(8P)

CN01

(2P)

CNH

(3P)

CNLV1

(5P)

Blue

CNLV2

(5P)

Red

CN51

(5P)

CN3D

(3P)

CN3S

(3P)

Red

CNS1

(2P)

CNS2

(3P)

T B 3

T B 7

A B

1 2 3 4

CN40

(4P)

CN41

(4P)

54321

Connect to

indoor and

remote

controller

Red

Black

Red

12V

DSA

3 2 1

1 2

THHS

1234567123456

12345

CNRS3

(7P)

CNVCC3

(6P)

CNAC3

(5P)

GL3L1

Control circuit board

(MAIN-BOARD)

LD1

OFF ONOFF ONOFF ON

Unit address setting switch

X 0 1

A B Shield

6.3A

ZNR1~4

Red

CNFAN1

(5P)

Red

54321

CN38

(3P)

Green

CN34

(6P)

CN33

(6P)

CN32

(3P)

321

65432

FN4

FN6

FN2

FN3

FN1

Noise filter board

(POWER-BOARD)

Red White Black Green

Red White Black

F01

1 2 1 2

Green

CNTH

(2P)

CNL2

(2P)

Red

CN30V

(2P)

Red

CNFAN

(3P)

U W

1 2 1 2

F01

12345

CNVCC4

(2P)

CNAC2

(5P)

1234567

CNVCC2

(6P)

123

Red

Black

1 2 3 4

CNRS2

(7P)

CNCT

(4P)

(3P)

Yellow

CNDC1

(3P)

1 2 3 4

CN52C

CN15V1

(14P)

CNDR1

(9P)

CNDC2

(3P)

Yellow

CNDR2

(9P)

CN15V2

(14P)

Power circuit board

(INV-BOARD)

Black

White

Red

Gate amp board

(G/A-BOARD)

1 2 3

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 2 3

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9 10 11 12 13 14

1 2 3 4 5 6 7 8 9

U V W

F01

3.15A

CNVCC5

(2P)

GL3L1

Detection

Circuit

ONOFF

CNE

(2P)

L2 L1

Ground

X01

DCL

LEV1

SW1SW2SW3SW4

SWU1SWU2

X04

X05

X02

63H

CH1

SV1

60Hz

TB1

IPM

1357

1 2 3

-7-

S W U 1 ~ 2

T B 1

Switch unit address set

Terminal block power source

T B 3

T B 7

Terminal block transmisson

Ground terminal

Terminal block transmisson

centralized control

L D 1

S W 1

S W 2 ~4

Switch function selection

Switch display selection self-diagnosis

Luminous diode

T H 8

bypass outlet temp.

detect at Sub-cool coil

T H H S

Rediator panel temp.detect

6 3 H S

High pressure sensor

S L E V

L E V 1

Electronic expansion valve

(Oil return)

Electronic expansion valve

(Sub-cool coil bypass)

L 2

Choke coil(Transmission)

T H 7

liquid outlet temp.

detect at Sub-cool coil

T H 5

T H 2

T H 1

pipe temp.detect

T H 6

OA temp.detect

saturation

evapo.temp.detect

Thermistor

6 3 H

High pressure switch

S V 1 , S V 2

Solenoid valve

(Discharge-suction bypass)

C H 1

Crankcase heater (Compressor)

D S A

Surge absorber

Motor Compressor

Motor Fan Heat exchanger

Motor Fan Radiator panel

M F 1

M F

M C

5 2 C

Magnetic contactor

(Inverter main circuit)

Z N R 1 ~ 4

Varistor

C 1

Capacitor Smoothing

Resistor rush current protect

D C C T

Current Sensor

R 1

R 2

Resistor power regulation

D C L

DC reactor

(Power factor improvement)

I P M

Intelligent Power Module

D S

Diode stack

Symbol

Name

Symbol

Name

Symbol

Name

Symbol

Name

discharge pipe temp.detect

4-way valve

2 1 S 4

OFF : 0

ON : 1

(at factory shipment)

FLAG7

FLAG1

FLAG6

Display

Relay output

display

(Lighting)

During

compressor

run

Crankcase

heater

0000~9999

Display the address and error codes by turns

21S4

SV1 SV2

Check display

(Blinking)

Display at LED lighting (blinking) Remarks SW1 operation

FLAG3 FLAG4FLAG2 FLAG5

FLAG8

FLAG8 always lights at

microcomputer power ON

Always

lighting

LD1

FLAG8

FLAG7

FLAG6

FLAG5

FLAG4

FLAG3

FLAG2

FLAG1

1 2 3 4 5 6 7 8 9 10

-8-

[4] Standard operation data

1 Cooling operation

75 81

111 157

Discharge (TH1) Heat exchanger outlet (TH5)

Inlet

Accumulator

Outlet

Suction (Comp) low pressure saturation

temperature (TH2) Shell bottom (Comp)

SCC outlet (TH7) Bypass outlet (TH8) LEV inlet Heat exchanger outlet

Outdoor units

Items

Condition

Pressure

LEV opening

Sectional temperature

Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length

Ambient temp.

Indoor unit

Piping

Indoor unit fan notch Refrigerant volume

Outdoor unit

Compressor volts/Frequency

Indoor unit SC (LEV1) Oil return (SLEV)

DB/WB

Set

–

(Ft)

PUHY-80TMU-A PUHY-100TMU-A

–

kg(oz)

V/Hz

Pulse

Outdoor unit

85(185) 95(203) 40(104) 42(108)

7(45) 5(41)

9(48) 7(45) 7(45) 10(50) 6(43) 4(39)

60(140) 60(140)

27(81) 27(81)

8(46) 6(43)

26(79) 26(79)

10(50) 10(50)

2.00/0.50 (290/72)

1.99/0.46 (288/67)

°C

(°F)

MPa(psi)

High pressure/Low pressure (after O/S) (before MA)

Indoor unit

24 24 20 10 48 16 24 10

5(16.4) 5(16.4) 5(16.4) 5(16.4) 5(16.4) 5(16.4) 5(16.4) 5(16.4)

Hi Hi Hi Hi Hi Hi Hi Hi

440 440 380 300 450 320 440 300

26.7°C(80°F)/19.4°C(67°F) 35°C(95°F)

4 4

5(16.4) 5(16.4)

25(82) 25(82)

10.2(360) 12.5(441)

27.4

208

134/76

230

134/76

208

171/98

230

171/98

24.8 35.2 31.8

-9-

87 111

Discharge (TH1) Heat exchanger inlet (TH5)

Inlet

Accumulator

Outlet

Suction (Comp) low pressure saturation

temperature (TH2) Shell bottom (Comp)

Heat exchanger inlet LEV inlet

2 Heating operation

Outdoor units

Items

Condition

Pressure

LEV opening

Sectional temperature

Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length

Ambient temp.

Indoor unit

Piping

Indoor unit fan notch Refrigerant volume

Outdoor unit

Compressor volts/Frequency

Indoor unit SC (LEV1) Oil return (SLEV)

DB/WB

Set

–

PUHY-200TM-A PUHY-250TM-A

27.5

208

149/85

24.9

230

149/85

35.6

208

174/100

32.2

230

174/100

–

V/Hz

Pulse

85(185)

6(46) 8(46)

–1(30) –2(28) –1(30) –2(28) –1(30) –2(28) –2(28) –2(28)

35(95) 44(111)

71(160) 71(160)

33(91) 33(91)

1.72/0.36 (249/52)

MPa(psi)

High pressure/Low pressure (after O/S) (before MA)

°C

(°F)

Outdoor unit

Indoor unit

24 24 20 10 48 16 24 10

5(16.4) 5(16.4)5(16.4)5(16.4)5(16.4)5(16.4)5(16.4)5(16.4)

Hi Hi Hi Hi Hi Hi Hi Hi

510 510 450 300 350 380 510 300

21.1°C(70°F)

8.3°C(47°F)/6.1°C(43°F) 4 4

4 4

5(16.4) 5(16.4)

25(82) 25(82)

10.2(360) 12.5(441)

-10-

[5] Function of dip SW and rotary SW

(1) Outdoor unit

Switch Function

Function According to Switch Operation Switch Set Timing

When Off When On When Off When On Unit Address Setting For self diagnosis/ operation monitoring

– Centralized Control Switch Deletion of connection information.

Deletion of error history.

Adjustment of Refrigerant Volume

– Disregard ambient air sensor errors, fluid overflow errors. Forced defrosting

Defrost prohibited timer

–

– SW3-2 Function Valid/ Invalid Indoor Unit Test Operation Defrosting start temperature of TH5. Defrosting end temperature of TH5. Opening angle of IC except when heater thermostat is ON during defrosting.

–

Target Pd (High pressure)

–

– –

–

– –

–

– –

–

Models

LED Display "°F" "psig" Display "°C" "kgf/cmG "Display When switching on the power

Fan characteristics ( )

Standard High external

static pressure

When switching on the power

– Centralized control not connected. Storing of refrigeration system connection information.

–

Ordinary control

– Errors valid.

Ordinary control

50 min.

–

– SW3-2 Function Invalid

Stop all indoor units.

-2°C

(28.4°F) (32°F)

8HP: 12°C(53.6°F)

10HP: 8°C(46.4°F)

(no operation)

–

18kg/cm

(256psi)

20kg/cm2G

(284psi) – –

Model 80

Set on 00 or 51~100 with the dial switch. (

✻

LED Monitering Display

– Centralized control connected. Deletion of refrigeration system connection information. Deletion

Refrigerant volume adjustment operation.

– Disregard errors.

Start forced defrosting.

90 min.

–

– SW3-2 Function Valid

All indoor units test operation ON.

0°C

(59°F)

°C

2000

–

– Model 100

During normal operation when power is on.

Before power is turned on. During normal operation when power is on. Should be set on OFF. Before power is turned on.

Before power is turned on.

During normal operation when power is on.

– During normal operation when power is on.

During normal operation when power is on. (Except during defrosting)

–

– During normal operation when power is on. When SW3-1 is ON after power is turned on. During normal operation when power is on. During normal operation when power is on. (Except during defrosting)

– When switching on the power. During normal operation when power is on.

–

– When switching on the power.

Invalid 2 hours after compressor starts.

During normal operation when power is on.

10 minutes or more after compressor starts.

Note:

1. SWU1~2=00 when shipped from the factory. Other factory settings are indicated by shaded portions.

✻

2. If the address is set from 01 to 50, it automatically becomes 100.

SWU

SW1

SW2

SW3

SW4

1~2 1~8

9~10

5 6

-11-

2. SW4-9 setting

Fan characteristics curve:DIPSW4-7ON,230V/60Hz

Fan characteristics curve:DIPSW4-7ON,208V/60Hz

150 160 180 190 200 210 220 230 240

Standard Airflow rate

200(m

/min)

Fan characteristics curve:DIPSW4-7OFF[FactorySetting],208V•230V/60Hz

Continuous operation range

Airflow rate (m3/min)

External static pressure (Pa)

170

-12-

(2) Indoor unit

DIP SW1, 3

Model 32 40 48 Capacity (model name) code

16 20 25

SW2 setting

Model 08 10 12 16 20 24 Capacity (model name) code

45 681013

SW2 setting

OFF

Note 1: The shaded part indicates the setting at factory shipment. (For the SW not being shaded, refer to the

table below.)

2: The DipSW setting is only effective during unit stopping (remote controller OFF) for SW1, 2, 3 and 4 commonly

and the power source is not required to reset.)

3: When both SW1-7 and SW1-8 are being set to ON, the fan stops at the heating thermostat of OFF.

Setting of DIP SW2

Model

Switch

SW1

SW3

3 6 7 3 4 6 8

PLFY-NAMU-A

ON ON

OFF

ON OFF OFF

Indoor unit inlet

None

100h

Ineffective Fan output display At stationary heating

Very low speed

SW1-7 setting

Ineffective

–

Heat pump

None

None None

1st setting

Down blow B, C

–

Effective

– –

Built in remote controller

Provided

2500h

Effective

Thermo. ON signal display

Always at heat.

Low speed

Set airflow

Effective

–

Cool.only

Provided

Provided Provided

2nd setting

Horizontal

–

Ineffective

– –

Room temp. sensor position Clogged filter detect. Filter duration OA intake Remote display select. Humidifier control Heating thermo. OFF airflow Heating thermo. OFF airflow Power failure automatic

return

–

Model selection

Louver

Vane Vane swing function Vane horizontal angle Vane angle set for cooling

–

Heating 4deg (7.2 deg) up Note : °C scale (°F scale)

– –

Always ineffective for PKFY-NAMU

Not provided for PKFY-NAMU Provided for PLFY-NGMU (ON) setting

Always down blow B,C for PKFY-NAMU

SW1

SW3

1 2 3 4 5 6 7 8

3 4 5 6 7

8 9

Switch SW name

Operation by SW

Switch set timing

OFF ON OFF ON

Remarks

At unit stopping

(at remote

controller OFF)

Cooling capacity saving

for PKFY-NAMU, effective/ineffective

PDFY-NMU-A

ON OFF OFF OFF OFF OFF

PKFY

OFF OFF OFF

OFF OFF

NAMU-A NGMU-A

OFF ON

-13-

Setting of DIP SW4 Setting of DIP SW5

1234

ON OFF ON OFF

OFF OFF OFF ON

ON OFF OFF ON

OFF OFF ON ON

––––

OFF OFF ON –

PDFY-10 ~ 32 PLFY-12 ~ 24 PLFY-32 ~ 48 PKFY-P-8 PKFY-P-12 PDFY-40, 48

Model Circuit board used

SW4

Phase control

Relay selection

✻

-14-

TEST RUN

[1] Before Test Run

(1) Check points before test run

1 Neither refrigerant leak nor loose power source/ transmission lines should be found, if found correct immediately.

2 Confirm that the resistance between the power source terminal block and the ground exceeds 2MΩ by measur-

ing it with a DC500V megger. Do not run if it is lower than 2MΩ. Note : Never apply the megger to the MAIN board. If applied, the MAIN board will be broken.

3 Confirm that the Ball valve at both gas and liquid sides are fully opened.

Note : Close the cap.

4 Be sure that the crankcase heater has been powered by turning the main power source on at least 12 hours

before starting the test run. The shorter powering time causes compressor trouble.

(2) Caution at inverter check

Because the inverter power portion in outdoor unit electrical part box have a lot of high voltage portion, be sure to follow the instructions shown below.

During energizing power source, never touch inverter power portion because high voltage (approx. 320V) is applied to inverter power portion.

When checking,

Shut off main power source, and check it with tester, etc.

Allow 10 minutes after shutting off main power source.

Open the MAIN board mounting panel, and check whether voltage of both ends of electrolytic capacitor is 20V or less.

-15-

(3) Check points for test run when mounting options

(4) Attention for mounting drain water pump mechanism

Check point

Local remote controller displays code No. “2503”, and the mechanism stops.

No overflow from drain pan. Drain water comes out by operation of

drain pump. Sound of pump operations is heard, and

drain water comes out. No water leak from connecting portions

of each water piping. Water is supplied to water supply tank,

and float switch is operating.

Built-in optional parts Mounting of drain

water pump mechanism

Mounting of permeable film humidifier

Content of test run

Release connector of pump circuit, check error detection by pouring water into drain pan water inlet.

After that, connect connector of circuit.

Check pump operations and drainage status in cooling (test run) mode.

Check humidifier operations and water supply status in heating (test run) mode.

Result

Work

Disassembling and assembling of drain water pump mechanism

Mounting of float switch

Electric wiring

Float switch moves smoothly . Float switch is mounted on

mounting board straight without deformation.

Float switch does not contact the

copper pipe. Wiring procedure is exactly followed. Connector portion is tightly hooked.

Content of test run

Lead wire from control box not damaged.

Rubber cap properly inserted in to drain water outlet of drain pan?

Insulation pipe of gas and liquid pipes dealt with as shown on next page?

Drain pan and piping cover mounted without gap?

Drain pan hooked on cut projection of the mechanism?

Float switch installed without contacting the drain pan?

No mistakes in wiring? Connectors connected securely and

tightly? No tension on lead wire when sliding

control box?

1 2

Check point Result

Insulation pipe

No gap

-16-

Trouble

Not operate.

Not cool (at cooling). Not heat (at heating).

Not cool, not heat, error stop. Condensation drip in piping. Not cool, not heat, error stop.

Water leak, condensation drip in drain piping.

Error stop, not operate.

Electric shock. Error stop, not operate.

Classification

Installation and piping

Power source wiring

Portion

Check item

Instruction for selecting combination of outdoor unit, and indoor unit followed? (Maximum number of indoor units which can be connected, connecting model name, and total capacity.)

Follow limitation of refrigerant piping length? For example, 70m (229ft) or less (total length : 220m (721ft)) at the farthest.

Connecting piping size of branch piping correct? Refrigerant piping diameter correct? Refrigerant leak generated at connection? Insulation work for piping properly done? Specified amount of refrigerant replenished?

Pitch and insulation work for drain piping properly done? Specified switch capacity and wiring diameter of main

power source used?

Proper grounding work done on outdoor unit? The phases of the L line (L1, L2, L3) correct?

(5) Check points for system structure

Check points from installation work to test run.

-17-

Classification Transmission

line

Portion

Check item

Limitation of transmission line length followed? For example, 200m (656ft) or less (total length : 500m (1640ft)) at the farthest.

1.25mm2 (AWG16) or more transmission line used? (Remote controller 10m (32ft) or less 1.25mm2 (AWG16))

2-core cable used for transmission line?

Transmission line apart from power source line by 5cm (2in) or more? One refrigerant system per transmission line? The short circuit connector is changed form CN41 to

CN40 on the MAIN board when the system is centralized control? (Just one outdoor unit. Not all outdoor units.)

• No connection trouble in transmission line? Connection of wrong remote controller line terminals?

• MA Remote controller : TB15

• M-NET Remote controller : TB5

Trouble

Erroneous operation, error stop.

Error stop in case multiple-core cable is used.

Erroneous operation, error stop. Not operate. Not operate.

Error stop or not operate. Never finish the initial mode.

System set

Before starting

Error stop or not operate.

Can not be properly set with power source turned on.

Not operate. Set temperature not obtained at

heating operations (Thermostat stop is difficult)

Error stop.

Error stop, compressor trouble.

2 3

Address setting properly done? (M-NET Remote controller, indoor unit and outdoor unit.)

Setting of address No. done when shutting off power source?

Address numbers not duplicated? Turned on SW3-8 on indoor unit circuit board when

mounting room thermistor sensor?

Refrigerant piping ball valve (Liquid pressure pipe, gas pressure pipe) opened?

Turn on power source 12 hours before starting operations?

2 31

SET TEMP. ON/OFF

PAR-F27MEA-US

FILTER

CHECK TEST

CLOCK ON OFF

MODE

DRY COOL

DAILY

TIMER

CHECK

AUTO

ONCLOCK

SET TEMP.

REMAINDER

NOT AVAILABLE

SENSOR

INSIDE FILTER

TEST RUN

VENTILATION

EROR CODE

AUTO

OFF

CENTRALLY CONTROLLED

AUTO FAN

HEAT

STAND BY DEFROST

FAN SPEED

TIMER FAN SPEED

LOUVER VENTILATION

AIR DIRECTION

TIMER SET

-18-

CENTRALLY CONTROLLED

DRY COOL

TIMER

DAILY

AUTO FAN

STAND BY DEFROST

PAR-F27MEA-US

AUTO

SET TEMP.

REMAINDER

CHECK

HEAT

EROR CODE

SET TEMP. ON/OFF

CLOCK ON OFF

MODE

TIMER FAN SPEED

TIMER SET

AUTO

ONCLOCK

OFF

FAN SPEED

VENTILATION

NOT AVAILABLE

AIR DIRECTION

LOUVER VENTILATION

SENSOR

TEST RUN

INSIDE FILTER

CHECK TEST

FILTER

[2] Test Run Method

Operation procedure

Turn on universal power supply at least 12 hours before starting → Displaying “HO” on display panel for about two minutes

Press

TEST

button twice → Displaying “TEST RUN’’ on display panel

Press

MODE

button → Make sure that air is blowing out

Press

MODE

button to change from cooling to heating operation, and vice versa Make sure that warm or cold

air is blowing out

Press

FAN SPEED

adjust button → Make sure that air blow is changed

Press

AIR DIRECTION

LOUVER

ON/OFF

button to change direction of air blowing make sure that horizontal or

downward blow is adjustable.

Make sure that indoor unit fans operate normally Make sure that interlocking devices such as ventilator operate normally if any

Press button to cancel test run → Stop operation

Note 1: If check code is displayed on remote controller or remote controller does not operate normally.

2: Test run automatically stops operating after two hours by activation of timer set to two hours. 3: During test run, test run remaining time is displayed on time display section. 4: During test run, temperature of liquid pipe in indoor unit is displayed on remote controller room temperature

display section.

5: When pressing

FAN SPEED

adjust button, depending on the model, “NOT A V AILABLE” may be displayed on

remote controller. However, it is not a malfunction.

6: When pressing

AIR DIRECTION

LOUVER

button, depending on the model, “NOT A V AILABLE” may be

displayed on remote controller. However, it is not a malfunction.

-19-

GROUPING REGISTRATION OF INDOOR UNITS WITH M-NET REMOTE CONTROLLER

(1) Switch function

• The switch operation to register with the remote controller is shown below:

Registration/ ordinary mode selector switch

Registration/ordinary mode selection switch

Switch to assign indoor unit address

Registration switch

Confirmation switch

Delete switch

Registered mode selector switch

Switch to assign interlocked unit address

This switch selects the ordinary mode or registered mode (ordinary mode represents that to operate indoor units).

✻

To select the registered mode, press the

FILTER

LOUVER

button continuously for over 2 seconds under stopping state. [Note] The registered mode can not be obtained for a while after powering. Pressing the

FILTER

LOUVER

button displays “CENTRALLY

CONTROLLED”. This button assigns the unit address for “INDOOR UNIT ADDRESS

NO.”

This button is used for group/interlocked registration.

This button is used to retrieve/identify the content of group and interlocked (connection information) registered.

This button selects the case to register indoor units as group (group setting mode) or that as interlocked (interlocked setting mode).

✻

The unit address is shown at one spot for the group setting mode

while at two spots for the interlocked setting mode.

This button assigns the unit address of “OA UNIT ADDRESS NO.”

Symbol

of switch

Registered mode selector switch

Confirmation switch

Switch to assign indoor unit address

Switch to assign inter-

locked unit address

Registration switch

FILTER

TEST RUN

Name Name of actual switch Description

of TEMP

CLOCK→ ON→OFF

of TIMER SET

Registration/ ordinary mode selector switch

SET TEMP. ON/OFF

PAR-F27MEA-US

FILTER

CHECK TEST

CLOCK ON OFF

MODE

DRY COOL

DAILY

TIMER

CHECK

AUTO

ONCLOCK

SET TEMP .

REMAINDER

NOT AV AILABLE

SENSOR

INSIDE FILTER

TEST RUN

VENTILATION

EROR CODE

AUTO

OFF

CENTRALLY CONTROLLED

AUTO FAN

HEAT

STAND BY DEFROST

FAN SPEED

TIMER FAN SPEED

LOUVER VENTILATION

AIR DIRECTION

TIMER SET

Delete switch

LOUVER

TIMER

MODE

-20-

(2) Attribute display of unit

• At the group registration and the confirmation/deletion of registration/connection information, the type (attribute) of the unit is displayed with two English characters.

Display Type (Attribute) of unit/controller

Indoor unit connectable to remote controller Outdoor unit

Local remote controller System controller (MJ)

[Description of registration/deletion/retrieval]

• The items of operation to be performed by the remote controller are given below. Please see the relating paragraph for detail.

Group registration of indoor unit

• The group of the indoor units and operating remote controller is registered.

• It is usually used for the group operation of indoor units with different refrigerant system.

Retrieval/identification of group registration information of indoor units

• The address of the registered indoor units in group is retrieved (identified).

Retrieval/identification of registration information

• The connection information of any unit (indoor/outdoor units, remote controller or the like) is retrieved (identified).

Deletion of group registration information of indoor units

• The registration of the indoor units under group registration is released (deleted).

Deletion of the address not existing

• This operation is to be conducted when “6607” error (No ACK error) is displayed on the remote controller caused by the miss setting at test run, or due to the old memory remained at the alteration/modification of the group composition.

Caution:

When MELANS (G-50 for example) is being connected, do not conduct the group/pair registration using the remote controller. The group/pair registration should be conducted by MELANS. (For detail, refer to the instruction exclusively prepared for MELANS.)

-21-

(3) Group registration of indoor unit

1) Registration method

• Group registration of indoor unit ........................................................................

The indoor unit to be controlled by a remote controller is registered on the remote controller.

[Registration procedure]

With the remote controller under stopping or at the display of “HO”, continuously press the

FILTER

LOUVER

button ( + ) at the same time for 2 seconds to change to the registration mode. (See the figure below.) Assign the indoor unit address to “INDOOR UNIT ADDRESS NO.” by operating the (Room temperature adjustment) ( ). Then press the

TEST RUN

button ( ) to register. In the figure below , the “INDOOR UNIT ADDRESS NO.” is being set to 001. After completing the registration, press the

FILTER

LOUVER

button ( + ) at the same time for 2 seconds to

change to the original ordinary mode (with the remote controller under stopping).

• Remote controller under stopping • “HO” under displaying

Ordinary mode

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

˚C

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

˚C

ERROR CODE OA UNIT ADDRESS NO

˚C

Group setting mode

• Confirm the indoor unit address No.

• Confirm the connection of the transmission line.

ERROR CODE OA UNIT ADDRESS NO

˚C

ERROR CODE OA UNIT ADDRESS NO

˚C

• Registration complete

• Registration error

Indicates the type of unit (Indoor unit in this case)

“88” flickers indicating registration error. (when the indoor unit registered is not existing)

Assign the address ( )

Change to the registration mode ( + )

Press the registration switch ( )

Remote controller

Indoor units

Group

System example

-22-

2) Method of retrieval/confirmation

• Retrieval/confirmation of group registration information on indoor unit...............

The address of the indoor unit being registered on the remote controller is displayed.

[Operation procedure]

With the remote controller under stopping or at the display of “HO”, continuously press the

FILTER

LOUVER

button

( + ) at the same time for 2 seconds to change to the registration mode.

In order to confirm the indoor unit address already registered, press

TIMER

button ( ). (See figure below.) When the

group of plural sets is registered, the addresses will be displayed in order at each pressing of

TIMER

button ( ).

After completing the registration, continuously press the

FILTER

LOUVER

button ( + ) at the same time for 2

seconds to change to the original ordinary mode (with the remote controller under stopping).

• Retrieval/confirmation of registration information ................................................

The registered information on a certain unit (indoor unit, outdoor unit, remote controller or the like) is displayed.

[Operation procedure]

With the remote controller under stopping or at the display of “HO”, continuously press the

FILTER

LOUVER

button

( + ) at the same time for 2 seconds to change to the registration mode.

Operate

MODE

button ( ) for the interlocked setting mode. (See figure below.)

Assign the unit address of which registration information is desired to confirm with the (TIMER SET) switch

( ). Then press the

TIMER

button ( ) to display it on the remote controller. (See figure below.)

Each pressing of

TIMER

button ( ) changes the display of registered content. (See figure below.)

After completing the retrieval/confirmation, continuously press the

FILTER

LOUVER

button ( + ) at the same

time for 2 seconds to change to the original ordinary mode (with the remote controller under stopping).

• Registered

• No registration.

ERROR CODE OA UNIT ADDRESS NO

˚C

ERROR CODE OA UNIT ADDRESS NO

˚C

Press the switch for confirmation ( )

Note: Only one address will be displayed

when the registration is one even the switch is how often pressed

Indicates the type of unit (Indoor unit in this case)

SET TEMP . ON/OFF

PAR-F27MEA-US

FILTER

CHECK TEST

CLOCK ON OFF

MODE TIMER FAN SPEED

LOUVER VENTILATION

AIR DIRECTION

TIMER SET

2 3

-23-

3) Method of deletion

• Deletion of group registration information of indoor unit ......................................

[Operation procedure]

With the remote controller under stopping or at the display of “HO”, continuously press the

FILTER

LOUVER

button ( + ) at the same time for 2 seconds to change to the registration mode. Press the

TIMER

button ( ) to display the indoor unit address registered. (As same as )

In order to delete the registered indoor unit being displayed on the remote controller , press the

CLOCK →→ON OFF

TIMER

( ) button two times continuously. At completion of the deletion, the attribute display section will be shown as “ – – “. (See figure below.) Note: Completing the deletion of all indoor units registered on the remote controller returns to “HO” display. After completing the registration, continuously press the

FILTER

LOUVER

button ( + ) at the same time for 2

seconds to change to the original ordinary mode (with the remote controller under stopping).

ERROR CODE OA UNIT ADDRESS NO

˚C

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

˚C

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

˚C

Set the address

Press the switch for confirmation ( )

• Registered

• No registration

* Same display will appear when

the unit of “007” is not existing.

twice continuously.

• Deletion completed

In case of group registration with other indoor unit is existing

In case of no group registration with other indoor unit is existing

“– –” indicates the deletion completed.

ßC

(Alternative

display)

ßC

(Alternative

display)

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

˚C

SET TEMP . ON/OFF

PAR-F27MEA-US

FILTER

CHECK TEST

CLOCK ON OFF

MODE TIMER FAN SPEED

LOUVER VENTILATION

AIR DIRECTION

TIMER SET

SET TEMP . ON/OFF

PAR-F27MEA-US

FILTER

CHECK TEST

CLOCK ON OFF

MODE TIMER FAN SPEED

LOUVER VENTILATION

AIR DIRECTION

TIMER SET

AFB

Press the switch for confirmation (

)

-24-

4) Deletion of information on address not existing

• Deletion of information on address not existing ...................................................

This operation is to be conducted when “6607” error (No ACK error) is displayed on the remote controller caused by the miss setting at test run, or due to the old memory remained at the alteration/modification of group composition, and the address not existing will be deleted. Note: The connection information (connection between indoor unit and outdoor unit) on the refrigerant system can

not be deleted. An example to delete the system controller of “250” from the indoor unit of “007” is shown below .

[Operation procedure]

With the remote controller under stopping or at the display of “HO”, continuously press the

FILTER

LOUVER

button ( + ) at the same time for 2 seconds to change to the registration mode. Operate

MODE

button ( ) for the interlocked setting mode ( ii ). (See the figure below.)

Assign the unit address existing to “OA UNIT ADDRESS No.” with the (TIMER SET) switch ( ), and press

TIMER

button ( ) to call the address to be deleted. (See the figure below.) As the error display on the remote controller is usually transmitted from the indoor unit, “OA UNIT ADDRESS No.” is used as the address of the indoor unit. Press the

CLOCK →→ON OFF

TIMER

button ( ) twice. (See the figure below.)

After completing the deletion, continuously press the

FILTER

LOUVER

button ( + ) at the same time for 2

seconds to return to the original ordinary mode (with the remote controller under stopping).

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

ßC

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

ßC

(Alternative

display)

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

ßC

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

ßC

(Alternative

display)

✻

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

ßC

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

ßC

(Alternative

display)

✻

When both indoor unit and interlocked unit addresses are existing

Deletion of address not existing

Set the address ( )

Press the deletion switch ( ) twice

• Deletion completed

Press the switch for confirmation ( )

SET TEMP . ON/OFF

PAR-F27MEA-US

FILTER

CHECK TEST

CLOCK ON OFF

MODE TIMER FAN SPEED

LOUVER VENTILATION

AIR DIRECTION

TIMER SET

2 3

3 F

-25-

CONTROL

[1] Control of Outdoor Unit

(1) Initial processing

• When turning on power source, initial processing of microcomputer is given top priority.

• During initial processing, control processing corresponding to operation signal is suspended. The control processing is resumed after initial processing is completed. (Initial processing : Data processing in microcomputer and initial setting of each LEV opening, requiring approx. 2 minutes at the maximum.)

(2) Control at staring

• In case unit is started within 2 hours after turning on power source at low outdoor air temperature (+5˚C (41°F) or less), the unit does not start operating for 30 minutes at the maximum .

(3) Bypass, capacity control

• Solenoid valve consists of bypass solenoid valve (SV1, SV2) bypassing between high pressure side and low pressure side. The following operation will be provided.

1) Bypass solenoid valves SV1 and SV2 (both "open" when turned on) SV1

ON (Open) OFF (Close)

Turned on for 4 minutes Turned on for 2 minutes

Always turned on

Turned on for 3 minutes

Always turned on

Always turned on in oil recovery operation after low frequency continuous operations



When Pd reaches When Pd is

27.5kg/cm

24kg/cm2G (341psi) or

(391psi) or more less 30 seconds



Item

When starting compressor After thermost "ON is returned

and after 3 minutes restart When compressor stops in

cooling or heating mode After operation stops During defrosting operations

(See figure below

✻

During oil recovery operations

During 20Hz operations, at fall in low pressure saturation temperature. (ET) (3 minutes or more after starting)

When high pressure rises (Pd)

When high pressure rises (Pd) during 20Hz operations (3 minutes after starting)

When discharge temperature rises (3 minutes after starting)

✻

Ex. SV1

When low pressure saturation temp. (ET) is -15˚C (5°F) or more

When Pd is 23kg/ cm

G (327psi) or less

after 30 seconds When high pressure

(Pd) is 20kg/cm

(284psi) or less When discharge

temp. is 115˚C (239°F) or less

SV2

 



 



OFF (Close)

ON (Open)

When low pressure saturation temp. (ET) is -30˚C (-22°F) or less

When Pd reaches

26kg/cm

G (370psi)

or more

Turned on when high pressure (Pd) exceeds pressure limit

When temp. exceeds 130˚C (266°F) and Pd reaches 15kg/cm2G (213psi) or more

Start

Thermo. OFF

Thermo. ON

(4-minute)

(3-minute)

Stop

Bypass solenoid valve (SV1)

Compressor

(2-minute)

(4-minute)

Defrosting time (*1)

-26-

+ 66 hidden pages