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Mitsubishi Electric Mr.Slim PUHZ-RP200YHA2, Service Manual

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Mitsubishi Electric Mr.Slim PUHZ-RP200YHA2 Service Manual Download Page 13

13

PUHZ-RP200YHA2   PUHZ-RP250YHA2

TH7/6
(RED)

TH3

(WHT)

TH4

(WHT

)

TH7 TH6 TH3 TH4

4

1

2

1

2 1

WÛ

WÛ

WÛ

WÛ

63L

LEV-B
(RED)

LEV-B

M

LED1

LED2

6

1

LEV-A
(WHT)

LEV-A

M

6

1

CNVMNT

(WHT)

3

1

CNMNT

(WHT)

CNM

(WHT)

5

1

3

5

5

14

1

63L

(RED)

3

1

63H1

63H

(YLW)

3

1

63H

63H2

CN2

(WHT)

7

7

1

CN2

(WHT)

7

7

1

CNDM

(WHT)

CN3S

(WHT)

CN51

(WHT)

1

3

1

3

1

5

X51

X52

SW7

SW6

SW1

SW9

CN31

+

1

+

1

+

3.

For RP200

+

3.

For RP250

+

4.

RP250 only

+

6.RP250 only

+

5.

RP200=5 LINE

RP250=6 LINE

SW5

SW8

SW4

SWP

CN4

(WHT)

1 2

1

3

1

3

2

21S4

SS

(WHT)

21S4

(GRN)

X55

1

3

SV

SV2

(BLU)

CNAC
(WHT)

F4

F3

2

1

4

3

2

3

1

CNDC

(PNK)

CNS

(WHT)

3

1

TRANS

CNF1

(WHT)

CNF2

(WHT)

MF1

MS

3~

7

1

7

1

MF2

MS

3~

C.  B.

P.  B.

CN5

(WHT)

3

1

LED2

SW1

SW11

SW12

LED3

LED4

TB7

LED1

LED5

2
1

CND

(WHT)

CN2M

(WHT)

M-NET SUBSTRATE

M-NET

A B S

When M-NET adapter is connected

3

5

1

2

2

1
2

2

1

CN4

(WHT)

CN5

(RED)

WHT

FUSE1

FUSE2

WHT

RED

RED

MS

3~

POWER
SUPPLY
3N~
400V 50Hz

INDOOR
UNIT

TB1

L3

L2

L1

N

U

U

U

U

U

3

1

2

2

1

3

CNDC

(PNK)

CNL

(BLU)

3

1

1

2

CNCT
(RED)

CNAC2

(RED)

3

1

CNAC1

(WHT)

BLK

BLK

WHT

WHT

U

LO 1

LO 2

LO3

LI  1

LI  2

LI  3

NI

RED

WHT

BLU

BLK

GRN/YLW

GD2

GD1

RED

WHT

BLK

N.  F.

TB2

DCL

ACL4

S3

S2

S1

ORN

YLW

CY2

CY1

BRN

NO FUSE
BREAKER

RED

RED

RS

RED

WHT

WHT

WHT

BLK

BLK

BLK

X52A

BLK

BLK

TB-P2

TB-P1

TB-C1

TB-N1

CB1

CB2

W

V

MC

U

TB-L1

TB-L2

TB-L3

SC-U

SC-V

SC-W

RED

MODEL

SW6

+

1 MODEL SELECT

SW5-6

+

2

1 2 3 4 5 6 7 8

+

2.

SW5 -1 to 5 : Function Switch

OFF

1 2 3 4 5 6

OFF

ON

200Y

ON

1 2 3 4 5 6 7 8

OFF

1 2 3 4 5 6

OFF

ON

250Y

ON

FUSE1, FUSE2

Connector<Connection for Option>

CN51

Relay

X51,X52,X55

Connector<Connection for Option>

CN3S

TB1

MC
MF1,MF2
21S4

63H,63H1,63H2

TH3
TH4
TH6
TH7
LEV-A,LEV-B

DCL

Terminal Block<Power Supply>

TB2

Terminal Block<Indoor/Outdoor>
Motor for Compressor
Fan Motor 

Solenoid Valve (Four-Way Valve)

SV

Solenoid Valve (Bypass Valve)

High Pressure Switch

63L

Low Pressure Switch
Thermistor<Outdoor Pipe>

SC-U/V/W
TB-L1/L2/L3

Connection Terminal<U/V/W-Phase>

Thermistor<Discharge>
Thermistor<Outdoor 2-Phase Pipe>
Thermistor<Outdoor>

Fuse<T15AL250V>
Capacitor

Electronic Expansion Valve

Reactor

ACL4

Reactor

Connection Terminal<L1/L2/L3-Power supply>

P.B.

Power Circuit Board

RS

Rush Current Protect Resistor

CB1,CB2

CY1,CY2

Main Smoothing Capacitor

Connection Terminal

Noise Filter Circuit Board
Connection Terminal

<L1/L2/L3/NI-Power supply

>

Connection Terminal<Ground>

52C Relay

N.F.

LI1/ LI2/LI3/NI
LO1/ LO2/LO3 Connection Terminal

<L1/L2/L3-Power supply>

GD1,GD2

Controller Circuit Board

C.B.

TB-C1

X52A

Connection Terminal

TB-N1

SYMBOL

[LEGEND]

NAME

SYMBOL

NAME

SYMBOL

NAME

Connection Terminal

TB-P1

Connection Terminal

TB-P2

Switch<Function Setup>

Switch<Function Setup>

Switch<Forced Defrost, Defect History Record 
              Reset, Refrigerant Address>

Switch<Test Operation>
Switch<Function Switch>
Switch<Model Select>

SW7

SW1

SW4
SW5
SW6

SW8

Switch

SW9

Switch<Pump Down>

SWP

Connector<Emergency Operation>
LED<Operation Inspection Indicators>

CN31

F3,F4

CNMNT

CNVMNT

CNDM

Connector
< Connected for Option (Contact Input)>

Fuse

<

T6.3AL250V

>

LED1,LED2

CNM

Connector<A-Control Service Inspection Kit>

SS

Connector<Connection for Option>

Connector
<Connected to Optional M-NET Adapter Board>

Connector
<Connected to Optional M-NET Adapter Board>

Terminal Block(M-NET connection)
Connector

<Transmission>

Connector

<Power Supply>

LED

<Power Supply:DC5V>

LED

<Power Supply:DC12V>

LED

<Connection to Outdoor Unit>

LED

<Transmission:Sending>

LED

<Transmission:Receiving>

Connector<M-NET communication

>

SYMBOL

NAME

Switch<Address setting:2nd digit>

Switch<Status of communication>
Switch<Address setting:1st digit>

TB7
CN5
CND
CN2M
SW1
SW11
SW12
LED1
LED2
LED3
LED4
LED5

M-NET ADAPTER

7

WIRING DIAGRAM

Summary of Contents for Mr.Slim PUHZ-RP200YHA2

Page 1: ...he outdoor units RoHS compliant products have G mark on the spec name plate CONTENTS 1 REFERENCE MANUAL 2 2 SAFETY PRECAUTION 3 3 FEATURES 7 4 SPECIFICATIONS 8 5 DATA 9 6 OUTLINES AND DIMENSIONS 12 7 WIRING DIAGRAM 13 8 WIRING SPECIFICATIONS 14 9 REFRIGERANT SYSTEM DIAGRAM 19 10 TROUBLESHOOTING 21 11 FUNCTION SETTING 73 12 MONITORING THE OPERATION DATABYTHE REMOTE CONTROLLER 80 13 EASY MAINTENANCE...

Page 2: ...0 71 100 125 140GA OC328 PCA RP50GA2 PCA RP50GA2 PKA RP35 50GAL PKA RP35 50GAL OC330 PKA RP60 71 100FAL PKA RP60 71 100FAL PKA RP50FAL2 PKA RP50FAL2 OC331 PEAD RP60 71 100GA PEAD RP60 71 100GA UK HWE05060 PEA RP200 250 400 500GA PEA RP200 250 400 500GA TH AF PEA RP200 250GA TH AFMF HWE0708A PEAD RP50 60 71 125 140EA PEAD RP35 100EA2 PEAD RP50 60 71 125 140EA UK PEAD RP35 100EA2 UK HWE05210 INDOOR ...

Page 3: ...not use refrigerant other than R410A If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc Use a vacuum pump with a reverse flow check valve Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc Use the following tools specifically designed for use with R410A refrigerant The following tool...

Page 4: ...e Refrigerant cylinder Only for R410A Top of cylinder Pink Cylinder with syphon Refrigerant recovery equipment 1 Cautions for service 1 Perform service after recovering the refrigerant left in unit completely 2 Do not release refrigerant in the air 3 After completing service charge the cycle with specified amount of refrigerant 4 When performing service install a filter drier simultaneously Be sur...

Page 5: ...eck if the existing air conditioner can operate The existing air conditioner can operate The existing air conditioner cannot operate After operating the cooling system for about 30 minutes do a pump down work Use a refrigerant recovery device to recover the refrigerant Check the oil condition when recovering refrigerant Oil is clean Clear to brownish color Oil is dirty Black color Disconnect the e...

Page 6: ...17 0 22 0 26 0 29 0 36 0 17 0 22 0 24 0 27 0 36 0 Nominal dimensions inch Flare nut dimensions Outside diameter Dimension B mm R410A R22 Gauge manifold Charge hose Gas leak detector Refrigerant recovery equipment Refrigerant cylinder Applied oil Safety charger Charge valve Vacuum pump Flare tool Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum gauge or thermis ...

Page 7: ...P100GA 2 PCA RP125GA 2 Indoor unit Outdoor unit PUHZ RP YHA2 200 250 PEAD RP60EA 3 PEAD RP71EA 3 PEAD RP60GA 3 PEAD RP71GA 3 PKA RP60FAL 3 PKA RP71FAL 3 PCA RP60GA 3 PCA RP71GA 3 Indoor unit Outdoor unit PUHZ RP YHA2 200 250 PEAD RP50EA 4 PEAD RP60EA 4 PEAD RP60GA 4 PKA RP50GAL 4 PKA RP50FAL2 4 PKA RP60FAL 4 PCA RP50GA 2 4 PCA RP60GA 4 Ratio of distributing Part No Synchronized twin 50 50 MSDD 50W...

Page 8: ...utdoor unit Mode Cooling Heating W D H Liquid Gas Indoor side Outdoor side Height difference Piping length Service Ref PUHZ RP250YHA2 PUHZ RP200YHA2 Cooling 7 70 Munsell 3Y 7 8 1 1 Linear Expansion Valve Hermetic ANB52FFJMT Inverter Plate fin coil Propeller fan 2 0 150 0 150 130 2170 Reverse cycle 950 37 3 8 330 30 13 1 3 16 1 350 53 1 8 R410A Flared Flared Brazing Max 30m Max 120m Heating 8 90 Co...

Page 9: ...s 71 120 m and less 0 9 kg 1 8 kg 2 7 kg 3 6 kg 1 2 kg 2 4 kg 3 6 kg 4 8 kg Outdoor unit Permitted pipe length RP200 RP250 120m or less Initial charge kg 6 5 7 1 No additional charge necessary The additional charge amount is obtained by the following formula Main piping Liquid line size 9 52 overall length m 0 09 kg m Branch piping Liquid line size 9 52 overall length m 0 06 kg m Branch piping Liq...

Page 10: ... 4 way Valve Coil 21S4 Linear Expansion Valve Reactor DCL High pressure switch 63H1 Compressor MC High Pressure Switch 63H 63H2 Low Pressure Switch 63L Fan Motor MF1 MF2 Thermistor Discharge TH4 Thermistor Outdoor TH7 7HUPLQDO ORFN Power Supply TB1 3P S1 S2 S3 7HUPLQDO ORFN Indoor Outdoor TB2 2200 400V Main Smoothing Capacitor CB1 CB2 Rush Current Protect Resister RS Thermistor Outdoor Pipe TH3 Th...

Page 11: ... 94 2 19 000 22 400 22 000 27 000 5 19 6 10 6 83 7 48 Electrical circuit Refrigerant circuit Indoor side Outdoor side Representative matching SHF BF Mode Capacty Input Total kgf kgf Phase Hz Voltage Input Current Outdoor unit Phase Hz Voltage Current Discharge pressure Suction pressure Discharge temperature Condensing temperature Suction temperature Ref pipe length Intake air temperature Discharge...

Page 12: ...w shows a basic example Explantion of particular details is given in the installation manuals etc 30 FOUNDATION 10 500 500 150 Service space FREE O v e r 1 0 m m O v e r 1 0 m m O v e r 1 5 0 m m O v e r 1 0 0 0 m m 53 40 56 0 70 175 600 175 330 30 370 28 19 417 60 37 2 12 36 oval holes Foundation Bolt M10 2 U Shaped notched holes foundation Bolt M10 Side Air Intake Rear Air Intake Air Discharge I...

Page 13: ...noid Valve Four Way Valve SV Solenoid Valve Bypass Valve High Pressure Switch 63L Low Pressure Switch Thermistor Outdoor Pipe SC U V W TB L1 L2 L3 Connection Terminal U V W Phase Thermistor Discharge Thermistor Outdoor 2 Phase Pipe Thermistor Outdoor Fuse T15AL250V Capacitor Electronic Expansion Valve Reactor ACL4 Reactor Connection Terminal L1 L2 L3 Power supply P B Power Circuit Board RS Rush Cu...

Page 14: ... S2 terminal However between S3 and S1 these terminals are not electrically insulated by the transformer or other device Notes 1 Wiring size must comply with the applicable local and national code 2 Power supply cords and Indoor unit Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord Design 60245 IEC 57 3 Use an earth wire which is longer than the other ...

Page 15: ...ating switch Outdoor unit Indoor unit outdoor unit connecting cales Remote controller Indoor unit Option Indoor unit power supply 1 A breaker with at least 3 0 mm contact separation in each pole shall be provided Use earth leakage breaker NV The breaker shall be provided to ensure disconnection of all active phase conductor of the supply 2 Max 120 m 3 The 10 m wire is attached in the remote contro...

Page 16: ... Number of wires Polarity L m 6 Round 2 5 3 Clockwise S1 S2 S3 Pay attention to stripe of yellow and green 30 2 Flat 2 5 3 Not applicable Because center wire has no cover finish Not applicable 5 Flat 1 5 4 From left to right S1 Open S2 S3 18 3 Round 2 5 4 Clockwise S1 S2 S3 Open Connect S1 and S3 to the opposite angle 30 4 1 Power supply cords of appliances shall not be lighter than design 60245 I...

Page 17: ...spots on the shield wire noise may enter into the shield wire because the ground wire and shield wire form 1 circuit and the electric potential difference occurs due to the impedance difference among grounding spots In case of single spot grounding noise does not enter into the shield wire because the ground wire and shield wire do not form 1 circuit To avoid communication errors caused by noise m...

Page 18: ...sses are 00 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 2 50 M NET Address No Setting example Switng setting SW11 ones digit SW12 tens digit OFF ON 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 ...

Page 19: ...UHZ RP200YHA2 Replace filter Restrictor valve Bypass valve Capillary tube O D 4 0 I D 3 0 L500 9 REFRIGERANT SYSTEM DIAGRAM Distributor Thermistor TH7 Heat exchanger Refrigerant LIQUID pipe 12 7 1 2 inch Stop valve with service port Strainer 100 Strainer 100 Power receiver Linear expansion valve B Linear expansion valve A Strainer 100 Thermistor TH6 Thermistor TH3 High pressure switch 63H1 Replace...

Page 20: ...y be a knocking sound around the machine room for several seconds after compressor starts operating but this is no problem with product because the check valve itself generates the sound since pressure difference is small in the refrigerant circuit Note The operation mode cannot be changed by SW4 2 during test run To change test run mode stop the unit by SW4 1 change the operation mode and restart...

Page 21: ... service There is no abnormality in electrical component controller board remote controller and etc Re check the abnormal symptom Conduct trouble shooting and ascertain the cause of the trouble according to 10 5 Troubleshooting by inferior phenomena Continue to operate unit for the time being if the cause is not ascertained There is no abnormality concerning of parts such as electrical component c...

Page 22: ...once and red once blink alternately F1 After startup is displayed green once and red twice blink alternately F3 F5 F9 After startup is displayed green twice and red once blink alternately EA Eb After startup is displayed only green lights up 00 After startup is displayed only green lights up 00 indicates digital display 2 Press TEST button twice 1 Turn on the main power supply 3 Press OPERATION SW...

Page 23: ...f remote controller display turned off A TEST RUN and current operation mode are displayed Press the MODE button to activate COOL mode then check whether cool air is blown out from the unit Press the MODE button to activate HEAT mode then check whether warm air is blown out from the unit Press the FAN button and check whether strong air is blown out from the unit Press the VANE button and check wh...

Page 24: ...it has a function that stores error codes the latest check code can be recalled even if it is cancelled by the remote controller or power is turned off Check the error code history for each unit using the remote controller Switch to self diagnosis mode Press the CHECK button twice within 3 seconds The display content will change as shown below Set the unit number or refrigerant address you want to...

Page 25: ... The display content will change as shown below Press the FILTER button to start self diagnosis Remote controller self diagnosis result When the remote controller is functioning correctly Check for other possible causes as there is no problem with the remote controller When the remote controller malfunctions Error display 1 NG blinks The remote controller s transmitting receiv ing circuit is defec...

Page 26: ...ancelled Procedure 1 Press the CHECK button twice 2 Press the temperature buttons 3 Point the remote controller at the sensor on the indoor unit and press the HOUR button 4 Point the remote controller at the sensor on the indoor unit and press the ON OFF button Malfunction diagnosis method at maintenance service 10 3 4 Malfunction diagnosis method by wireless remote controller In case of trouble d...

Page 27: ... times Wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp blinks Check code Number of times Wireless remote controller Wired remote controller 1 P1 Intake sensor error P9 Pipe TH5 sensor error 2 P2 Pipe TH2 sensor error 3 E6 E7 Indoor outdoor unit communication error 4 P4 Drain sensor error Float switch connector open 5 P5 Drain pump error PA Forced compresso...

Page 28: ... of 63H 63H is working due to defective parts Defective outdoor controller circuit board Check connection of 63H connector on outdoor controller circuit board Refer to 10 9 Check the 63H side of connecting wire Check continuity by tester Replace the parts if the parts are defective Replace outdoor controller circuit board F3 5202 63L connector open Abnormal if 63L connector circuit is open for 3 m...

Page 29: ...ed indoor units Abnormal if the number cannot be checked automati cally due to miswiring of indoor outdoor unit connecting wire and etc after power is turned on for 4 minutes 2 Abnormal if outdoor controller circuit board recognizes excessive number of indoor units Check disconnection or looseness or polar ity of indoor outdoor unit connecting wire of indoor and outdoor units Check diameter and le...

Page 30: ...s 125 or 110 continuously for 5 minutes Abnormal if condenser evaporator tem perature thermistor TH5 exceeds 40 during defrosting and discharge temper ature thermistor TH4 exceeds 110 2 Abnormal if discharge superheat Cooling TH4 TH5 Heating TH4 TH6 exceeds 70 continuously for 10 minutes Overheated compressor opera tion caused by shortage of refrigerant Defective operation of stop valve Defective ...

Page 31: ...or TH3 TH7 6 on the outdoor controller circuit board Check breaking of the lead wire for thermistor TH3 TH6 TH7 Refer to 10 9 Check resistance value of thermistor TH3 TH6 TH7 or check temperature by microcomputer Thermistor TH3 TH6 TH7 Refer to 10 7 SW2 on A Control Service Tool Refer to 10 10 Replace outdoor controller circuit board Replace outdoor power circuit board Emergency operation is avail...

Page 32: ...of outdoor con troller circuit board UH 5300 Compressor current sensor error or input current error Abnormal if compressor current sensor detects 1 0A to 1 0A within 3 minutes after compressor starts operating This error is ignored in case of test run mode Disconnection of compressor wiring Defective circuit of current sensor on outdoor power circuit board Correct the wiring U V W phase to compres...

Page 33: ...here is no problem with the action above Check wiring of remote controller Total wiring length max 500m Do not use cable 3 or more The number of connecting indoor units max 16 units The number of connecting remote control ler max 2 units When the above mentioned problem of are not applied Diagnose remote controllers a When RC OK is displayed remote con trollers have no problem Turn the power off a...

Page 34: ...normal if communication between outdoor controller circuit board and M NET board is not available Check disconnection looseness or breaking of connection wire between outdoor control ler circuit board CNMNT and M NET board CN5 Check disconnection looseness or breaking of connection wire between outdoor control ler circuit board CNMNT and M NET board CND Check M NET transmission wiring method E8 68...

Page 35: ...FRESH MASTER LOSSNAY or remote con troller is not connected to terminal block for central control TB7 of outdoor unit Check if transmission wire of indoor unit FRESH MASTER or LOSSNAY is not con nected to terminal block for transmission wire of outdoor unit Check if terminal block for transmission wire TB3 and terminal block for central control TB7 is not connected Check transmission waveform or n...

Page 36: ...nnection of transmission connector CN2M of outdoor unit Defective transmitting receiving circuit of outdoor unit or indoor unit Always try the followings when the error A7 occurs Turn off the power supply of outdoor unit indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If mal function was accidental the unit returns to normal Check address ...

Page 37: ...r supply of same refrig erant system with LOSSNAY is turned off or within 2 min utes of restart abnormality is detected Contact failure of transmis sion wire of indoor unit of LOSSNAY Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiv ing circuit of indoor unit or LOSSNAY 7 If displayed address or attribute is non existent The unit of former address does not ...

Page 38: ...nication error Check LED3 on indoor controller board 1 When LED3 is not blinking Check indoor outdoor connecting wire for miswiring Converse wiring of S1 and S2 or break of S3 wiring 2 When LED3 is blinking Indoor outdoor connecting wire is nor mal Check LED display on outdoor controller circuit board Refer to 10 10 Check protection device connector 63H for contact failure Refer to 10 9 Error Code...

Page 39: ...perating immediately when turning off by the remote controller Normal operation For protection of compressor Normal operation 4 Even controlled by the wireless remote controller no beep is heard and the unit does not start operat ing Operation display is indicated on wireless remote controller The pair number settings of the wireless remote con troller and indoor controller board are mismatched Ch...

Page 40: ...osis after turning on the main power Normal The start up diagnosis will be over in around 2 minutes Miswiring of indoor outdoor connecting wire Breaking of indoor outdoor connecting wire S3 Defective indoor controller board Defective outdoor controller circuit board Refer to Self diagnosis action table in order to solve the trouble In case of communication errors the display of remote controller m...

Page 41: ...uit board are blown Check the wiring of the outdoor unit Check if the wiring is bad Check if the fuses are blown The fuses on the outdoor controller circuit board will be blown when the indoor outdoor connecting wire short circuits Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board are blown Check if miswiring breaking or poor contact is causing this probl...

Page 42: ... outdoor controller circuit board Replace the outdoor controller circuit board Normal Only the unit which has the refrigerant address 0 supplies power to the remote controller Set the refrigerant address to 0 In case of the multiple grouping system recheck the refrigerant address again Defective indoor power board Replace the indoor power board Defective outdoor power circuit board Replace the out...

Page 43: ... contact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If it is not between DC 10V and DC16V the indoor controller board must be defective The remote controller wire short circuits Check if the remote controller wire is short circuited Defective indoor controller board Replace the indoor controller board Diagnosis flow Cause Inspect...

Page 44: ... clear FILTER from the display See the operation manual that came with the product for how to clean the filters STANDBY is displayed on the screen This is displayed when the unit starts HEAT operation when the thermostat puts the compressor in operation mode or when the outdoor unit ends DEFROST operation and returns to HEAT operation The display will automatically disappear around 10 minutes late...

Page 45: ...oor unit is controlling the airflow amount in order to keep the optimum operating condition A sound similar to water flowing is heard from the unit This is not a malfunction This is the sound which is heard when the refrigerant is flowing inside the indoor unit The fan speed doesn t match the setting of the remote controller in HEAT operation The up down vane will be automatically set to horizonta...

Page 46: ...d The airflow direction doesn t change Up down vane left right louver 1 Check if the vane is set to a fixed position Check if the vane motor connector is removed 2 Check if the air conditioner has a function for switching the air direction 3 If the air conditioner doesn t have that function NOT AVAILABLE will be displayed on the remote controller when AIR DIRECTION or LOUVER button is pressed Some...

Page 47: ... drips down Heating water drips down from the heat exchanger Make use of optional parts Drain Socket and Drain pan if these water needs to be collected and drained out for once Water or moisture is expelled from the outdoor unit Batteries are being exhausted Replace them and press the reset button of remote controller The display of wireless remote controller gets dim or doesn t come on The indoor...

Page 48: ...asure the resistance with a tester Winding temperature 20 Normal Gray Black Gray Red Gray Yellow Gray Orange Abnormal 46 3 Open or short Refer to next page Fan motor MF1 MF2 0 30 Measure the resistance between the terminals with a tester Winding temperature 20 Normal Abnormal Open or short 1197 10 Normal Abnormal Open or short W V U 1435 150 1 2 3 4 5 6 M Blue Brown Yellow Orange Red White Disconn...

Page 49: ...ctor CNF1 2 Fuse check Check the fuse F5 on outdoor controller board Power supply check Remove the connector CNF1 2 Measure the voltage in the outdoor controller circuit board TEST POINT VDC between 1 and 4 of the fan connector VDC DC250 330V TEST POINT VCC between 5 and 4 of the fan connector VCC DC15V Recover wiring Replace outdoor controller board Replace the fan motor Replace outdoor controlle...

Page 50: ...3k 40 3 0k Thermistor R0 15k 3 B constant 3480 2 Rt 15exp 3480 273 t 273 1 1 Thermistor R120 7 465k 2 B constant 4057 2 Rt 7 465exp 4057 273 t 393 1 1 20 250k 30 160k 40 104k 50 70k 60 48k 70 34k 80 24k 90 17 5k 100 13 0k 110 9 8k High temperature thermistor Thermistor Discharge TH4 0 10 20 30 40 50 20 10 0 10 20 30 40 50 Temperature Resistance k 500 400 300 200 100 0 25 50 75 100 120 Temperature ...

Page 51: ...e is locked sound can be heard No sound is heard when the pulse number moves from to in case coil is burnt out or motor is locked by open phase Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve LEV M 1 6 4 4 3 2 1 1 Gray Orange Red Yellow Black 3 4 5 6 Connector LEV A DC12V Outdoor controller board Drive circuit 3 ...

Page 52: ...FF OFF ON OFF OFF OFF ON ON OFF 1 Output Phase Output 2 3 4 2 3 4 5 6 7 8 OFF OFF ON OFF OFF OFF ON ON OFF OFF OFF ON ON OFF OFF ON RP250 Opening a valve 8 7 6 5 4 3 2 1 8 Closing a valve 1 2 3 4 5 6 7 8 1 The output pulse shifts in above order When linear expansion valve operation stops all output phase become OFF When the switch is turned on 700 pulse closing valve signal will be sent till it go...

Page 53: ...wise pipes can bend due to pressure How to attach the coil Hold the lower part of the main body shown as A firmly so that the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stop per to main body At this time be careful that stress is not added to lead wire and main body is not wounded by lead wire If the stopper is not firmly a...

Page 54: ...ure Be sure to attach the stopper to pipe B B A How to attach the coil Hold the lower part of the main body shown as A firmly so that the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stop per to pipe B At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stop per is not ...

Page 55: ...operation for more than 10 hours neglecting this could result in freezing the heat exchanger in indoor unit 3 Emergency operation procedure Turn the main power supply off Turn on the emergency operation switch SWE on indoor controller board Set the shorting pins of emergency operation connector CN31 on outdoor controller board to ON Use SW4 2 on outdoor controller board to set the operation mode c...

Page 56: ...EAT 20 5 45 50 22 5 80 5 7 5 30deg 5deg 1 1 1 1 2 2 Remarks 1 If the thermistor temperature data is normal not open short that data is loaded into the control as valid data When the unit enters emergency operation and TH values are mismatched set the thermistors to open short And the unit runs emergency operation with the values listed above 2 If one thermistor is set to open short the values of S...

Page 57: ...door pipe TH7 6 Thermistor Outdoor 2 phase pipe CNDC Connect to the out door noise filter circuit board CNDC VFG TEST POINT Voltage between right pins of PC5C and PC5D pin 3 and pin 4 Same as CNF1 VSP TEST POINT Voltage between pins of C5A C5B DC 0V when stopped DC 1 6 5V when operated SW7 Demand control setting CN51 External signal output Compressor operating signal Abnormal signal LEV A B Linear...

Page 58: ...k TB1 GD1 Connect to the earth CNAC1 CNAC2 AC220 230 240V Connect to the outdoor controller circuit board CNAC CNDC Connect to the outdoor controller circuit board CNDC LO1 LO2 LO3 POWER SUPPLY LO1 LO2 LO2 LO3 LO3 LO1 AC380 400 415V OUTPUT Connect to the outdoor power circuit board TB L1 L2 L3 CNCT Primary current Connect to the outdoor power circuit board CN5 CNL Connect to the ACL4 GD2 Connect t...

Page 59: ... the outdoor con troller circuit board CN4 CN2 Connect to the outdoor controller circuit board CN2 3RZHU FLUFXLW ERDUG ĺ 7UDQVPLWWLQJ signal to the controller board 0 5V DC Zero cross signal 0 5V DC Not used 16V DC 16V DC Note The marks L1 L2 L3 N1 N2 P1 P2 U V and W shown in the diagram are not actually printed on the board TAB connecter on X52A Connect to the RS resistor POWER MODULE TB P2 Conne...

Page 60: ... or changed to OFF again This depends on the service conditions 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS 1 Function of switches 2 Power failure automatic recovery can be set by either remote controller or this DIP SW If one of them is set to ON Auto recovery activates Please set Auto recovery basically by remote controller because all units do not have DIP SW Please refer to the indoor un...

Page 61: ... the range of usual 0 100 How to wire Basically the wiring is same with a Connect an SW 1 which is procured locally between Orange and Red 1 and 3 of the adapter for external signal input PAC SC36NA and insulate the tip of the brown lead wire It is possible to set it to the following power consumption compared with ratings by setting the SW7 1 2 2 Function of connectors and switches CN31 Types Con...

Page 62: ...etected by remote controller Remote controller transmitting error is detected by remote controller Remote controller signal receiving error is detected by indoor unit Remote controller transmitting error is detected by indoor unit Serial communication error Communication between outdoor controller board and outdoor power board Communication between outdoor controller board and M NET P C board Comm...

Page 63: ...e of outdoor thermistors Abnormality of heatsink temperature Check if indoor outdoor units have a short cycle on their air ducts Measure resistance value of outdoor thermistor TH8 Check the outdoor fan motor Check if connector TH3 on outdoor controller board is disconnected Abnormality of voltage Check looseness disconnection and converse connection of compressor wiring Measure resistance value am...

Page 64: ... Postponement code is displayed while error is being postponed 3 When the display blinks Inspection code is displayed when compressor stops due to the work of protection devices Display Contents to be inspected When power is turned on F5 E8 E9 EA Eb EC E0 E7 63H connector yellow is open Indoor outdoor communication error Signal receiving error Outdoor unit Indoor outdoor communication error Transm...

Page 65: ...0 hours or more hundreds digit tens digit and ones digit are displayed by turns Example When 2450 hours 245 10 hours 0 5 secs 0 5secs 2 secs 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Compressor operating current 0 50 LEV A opening pulse 0 480 0 50 Omit the figures after the decimal fractions 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Examp...

Page 66: ...e hundreds digit tens digit and ones digit are displayed by turns Example When 130 0 5 secs 0 5secs 2 secs A Code display Code display 0 20 When no error history 0 and are displayed by turns When no error history 0 and are displayed by turns 1 ON 2 3 4 5 6 Thermo ON time 0 999 Test run elapsed time 0 120 0 999 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displaye...

Page 67: ...se Display details 0 H P 1 Cooling only 0 Single phase 2 3 phase Setting details Defrosting switch Display details 0 Normal 1 For high humidity Example When heat pump 3 phase and defrosting normal are set up 20 is displayed 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Indoor pipe temperature Cond Eva TH5 1 Indoor 1 39 88 39 88 When the temperature is 0 or less and temperature are displayed by turns 39 88 When th...

Page 68: ... for display Unit 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Indoor setting temperature 17 30 Outdoor pipe temperature 2 phase TH6 39 88 Outdoor heatsink temperature TH8 40 200 17 30 39 88 When the temperature is 0 or less and temperature are displayed by turns 40 200 When the temperature is 0 or less and temperature are displayed by turns When the thermistor detects 100 or more hundreds digit t...

Page 69: ...utdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Error code history 3 Oldest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns 3 Outdoor pipe temperature Liquid TH3 6 Outdoor pipe temperature 2 phase TH6 7 Outdoor ambient temperature TH...

Page 70: ... C or less and temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs Outdoor pipe temperature 2 phase TH6 on error occurring 39 88 39 88 When the temperature is 0 C or less and temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs Outdoor ambient temperature TH7 on error occurring 39 88 39 88 When the temperature is 0 C or less and temperature are disp...

Page 71: ...e temperature is 0 C or less and temperature are displayed by turns Indoor pipe temperature Cond Eva TH5 3 Indoor 3 39 88 39 88 When the temperature is 0 C or less and temperature are displayed by turns When there is no indoor unit 00 is displayed 50 1 1 ON 2 3 4 5 6 Discharge superheat on error occurring SHd 0 255 Cooling TH4 TH6 Heating TH4 TH5 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2...

Page 72: ...g temperature Frosting preventing control Preventive control for excessive temp erature rise of radiator panel Example The following controls are activated Primary current control Preventive control for excessive tempe rature rise of condensing temperature Preventive control for excessive tempe rature rise of heatsink LED 39 88 When the temperature is 0 C or less and temperature are displayed by t...

Page 73: ...to all the units in the same refrigerant system 11 1 UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set according to necessity using the remote controller The setting of function for each unit can only be done by the remote controller Select function available from the table 1 1 Functions available when setting the unit number to 00 Select 00 referring to set the indoor unit n...

Page 74: ... 25 2 Set fan speed 3 Fan speed during the Set fan speed 27 1 cooling thermo OFF Stop 2 Detection of abnormality of Available 28 1 the pipe temperature P8 Not available 2 PLA BA PLA BA 2 Functions available when setting the unit number to 01 04 or AL 07 in case of wireless remote controller When setting functions for an indoor unit in an independent system set the unit number to 01 referring to se...

Page 75: ...etting Press Specified indoor unit BLOW operation Change refrigerant address or unit No Switch to function setting mode Press and at the same time with the remote controller stopped 11 1 1 Selecting functions using the wired remote controller First try to familiarize yourself with the flow of the function selection procedure In this section an example of setting the room temperature detection posi...

Page 76: ...nd blinks in the unit number display area and the refrigerant address display area also blinks there are no units that corre spondtotheselectedunitnumber Inthiscase therefrigerantaddressandunit number may be incorrect so repeat steps and to set the correct ones When grouping different refrigerant systems if an indoor unit other than the one to which the refrigerant address has been set to perform ...

Page 77: ...the temp button once to set 50 Direct the wireless remote controller toward the receiver of the indoor unit and press the button Set the unit number Press the temp button to set the unit number Press 01 to specify the indoor unit whose unit number is 01 Direct the wireless remote controller toward the receiver of the indoor unit and press the button If a unit number that cannot be recognized by th...

Page 78: ...e ON OFF button ON Initial setting value The automatic mode is displayed when the operation mode is selected OFF The automatic mode is not displayed when the operation mode is selected 4 3 Mode selection setting 1 Remote controller main sub setting To switch the setting press the ON OFF button Main The controller will be the main controller Sub The controller will be the sub controller 2 Use of cl...

Page 79: ...ayed when the operation mode is selected Initial setting value The automatic mode is not displayed when the operation mode is selected The temperature range limit is not active Initial setting value The temperature range can be changed on cooling dry mode The temperature range can be changed on heating mode The temperature range can be changed on automatic mode The remote controller will be the ma...

Page 80: ...tons and to select the desired refrigerant address Screen 4 Press the CLOCK buttons and to set the desired request code No 5 Press the FILTER button to perform data request The requested data will be displayed at in the same way as in maintenance mode Data collected during operation of the remote controller will be displayed The collected data such as temperature data will not be updated automatic...

Page 81: ...ured by thermostat Indoor unit Intake air temperature Unit No 1 Heat mode 4 deg correction Indoor unit Intake air temperature Unit No 2 Heat mode 4 deg correction Indoor unit Intake air temperature Unit No 3 Heat mode 4 deg correction Indoor unit Intake air temperature Unit No 4 Heat mode 4 deg correction Indoor unit Liquid pipe temperature Unit No 1 Indoor unit Liquid pipe temperature Unit No 2 I...

Page 82: ... unit Error postponement history 2 previous Outdoor unit Error postponement history 3 last but one 0 255 Refer to12 2 1 DetailContentsinRequestCode Refer to12 2 1 DetailContentsinRequestCode Refer to12 2 1 DetailContentsinRequestCode Refer to12 2 1 DetailContentsinRequestCode 0000 Not connected Examples Ver 5 01 Auxiliary information displayed after version information Examples Ver 5 01 A000 Displ...

Page 83: ...ror history 3 third to last Abnormal thermistor display TH3 TH6 TH7 TH8 Operation mode at time of error Compressor Operating current at time of error Compressor Accumulated operating time at time of error Compressor Number of operation times at time of error Discharge temperature at time of error Outdoorunit Liquidpipe1temperature TH3 attimeoferror Outdoor unit Liquid pipe 2 temperature at time of...

Page 84: ...g time Fan motor ON time Indoor fan output value Sj value Indoor fan output value Pulsation ON OFF Indoor fan output value duty value Indoor unit Model setting information Indoor unit Capacity setting information Indoor unit SW3 information Wireless pair No indoor control board side setting Indoor unit SW5 information Indoor unit Microcomputer version information Indoor unit Microcomputer version ...

Page 85: ...code display area C 4 Relay output state Operation mode Indoor unit Control state Request code 50 Data display Operation mode Display Operation mode 0 STOP FAN C COOL DRY H HEAT d DEFROST Relay output state Display Power currently Compressor 4 way valve Solenoid valve supplied to compressor Unit No 4 state Unit No 3 state Unit No 2 state Unit No 1 state Display State 0 Normal 1 Preparing for heat ...

Page 86: ...lay SV1 Four way valve Compressor 0 1 2 3 4 5 6 7 8 9 A b C d E F ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON Actuator output state Display 52C SV2 SS ON ON ON ON ON ON ON ON ON ON ON ON Error content U9 Request code 55 Data display Error content Error content 0 0 Error content Detected Display Overvoltage Undervoltage L1 phase Power synchronizin...

Page 87: ...isplay Request code 70 Data display Capacity 10 50 9 35 11 60 14 71 20 100 25 125 28 140 40 200 50 250 Outdoor unit Setting information Request code 71 Data display Setting information Setting information 0 0 Setting information Display Defrost mode 0 Standard 1 For high humidity Setting information Display Single 3 phase Heat pump cooling only 0 Single phase Heat pump 1 Cooling only 2 3 phase Hea...

Page 88: ...1 0 0 0 1 1 1 1 0 0 1 1 1 0 1 0 1 1 1 1 1 0 1 1 1 0 0 1 1 1 1 1 0 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 Outdoor unit switch setting display SW1 to SW10 except SW3 Request codes 73 to 82 0 Swich OFF 1 Swich ON Data display SW5 1 2 3 4 0 0 0 0 00 00 1 0 0 0 00 01 0 1 0 0 00 02 1 1 0 0 00 03 0 0 1 0 00 04 1 0 1 0 00 05 0 1 1 0 00 06 1 1 1 0 00 07 0 0 0 1 00 08 1 0 0 1 00 09 0 1 0 1 00 0A 1 1 0 1 00 0b 0 0 ...

Page 89: ...31 PLH P AAH PLA RP AA2 12 MEXZ GA VA L 32 13 33 14 34 15 35 16 36 17 37 18 38 19 39 1A 3A 1b 3b 1C 3C 1d 3d 1E 3E 1F 3F Indoor unit Capacity setting information Request code 163 Data display 0 0 See the table on the right Display Capacity setting state Display Capacity setting state 00 12 10 112 01 16 11 125 02 22 12 140 03 25 13 04 28 14 05 32 15 06 35 36 16 07 40 17 08 45 18 09 50 19 0A 56 1A 0...

Page 90: ... want to check the data with the air conditioner stopped skip to step 4 L Fixed Hz operation The operating frequency can be fixed to stabilize operation of inverter model If the air conditioner is currently stopped start it by this operation 2 Press the MODE button to select the desired operation mode Display 3 Press the FILTER button to confirm the setting Display Waiting for stabilization HEAT S...

Page 91: ... discharge temperature Outdoor ambient temperature INDOOR UNIT INLET TEMP INDOOR UNIT H EXC TEMP INDOOR UNIT FILTER USE H Indoor room temperature Heat exchanger temperature Filter operating time 12 340 hours Display Waiting for response Blinking After approx 10 seconds 1 1 Refrigerant address 00 Twin Refrigerant address 00 Outdoor unit Indoor unit 02 Indoor unit 01 Outdoor unit Remote controller R...

Page 92: ...ger temperature Indoor intake air temperature Cool Classification Item Result Inspection Temperature difference Heat Inspection Temperature difference Stable Unstable Stable Unstable Fixed Hz operation may not be possible under the following tempera ture ranges A In cool mode outdoor intake air temperature is 40 or higher or indoor intake air temperature is 23 or lower B In heat mode outdoor intak...

Page 93: ... motor fixing screws Photo 3 3 Removing the electrical parts box 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Disconnect the indoor outdoor connecting wire and power supply wire from terminal block 4 Disconnect the connectors on the controller circuit board 5 Remove the terminal cover and disconnect the compressor lead wire 6 Remove an electrical parts box fixing s...

Page 94: ...older Note In case of replacing thermistor Outdoor TH7 replace it together with thermistor Outdoor 2 phase pipe TH6 since they are combined together Refer to No 5 above to remove thermistor Outdoor 2 phase pipe Photo 6 Photo PUHZ RP250YHA2 Clamp Thermistor Outdoor 2 phase pipe TH6 6 Removing the thermistor Outdoor pipe TH3 and ther mistor Discharge TH4 1 Remove the service panel See figure 1 2 Dis...

Page 95: ...anel Removing the 4 way valve 6 Remove the 4 way valve coil 7 Recover refrigerant 8 Remove the welded part of 4 way valve Removing the bypass valve 6 Remove bypass valve coil 7 Recover refrigerant 8 Remove the welded part of bypass valve 9 Removing the linear expansion valve 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove 3 valve bed fixing screws 4 10 4 ball v...

Page 96: ...e the welded pipe of compressor inlet and outlet and remove the compressor Note Recover refrigerant without spreading it in the air Photo 9 Compressor MC Soundproof cover Compressor fixing nut Compressor terminal 10 Removing the high pressure switch 63H 63H1 63H2 and the low pressure switch 63L 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove 3 right side panel ...

Page 97: ...tlet Accumulator Valve bed fixing screws Compressor Compressor fixing nuts Separator fixing screw Separator 13 Removing the power receiver RP250 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove 2 front cover panel fixing screws 5 10 and remove the front cover panel 4 Remove 2 back cover panel fixing screws 5 10 and remove the back cover panel 5 Remove the electr...

Page 98: ...ARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Copyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Nov 2007 No OCH428 PDF 8 Made in Japan New publication effective Nov 2007 Specifications subject to change without notice ...

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