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Atlantic WOYG LCT Series, Maintenance Document

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Atlantic WOYG LCT Series Maintenance Document Download Page 35

2.2.2 Outdoor unit does not defrost

‡

Is  condensation  drain  properly  discharged  (outdoor 

unit directly on the ground)?

‡

Are the auxiliaries powered?

‡

In boiler backup mode, is the boiler authorized?

‡

In  very  cold  areas,  a  fusing  resistance  value  is 

recommended.

-  Is  the  installation  regularly  subject  to  micro-
outages  of  power  (frequent  outages  on  the 
mains power system may also cause defrosting 
problems)?

- Is there a peak day clearing (EJP) outage on the 
installation?

‡

Does the heat pump regularly switch to high pressure 

safety mode?

If  this  occurs  at  low  temperatures  (<  5  °C),  we 
recommend checking that the water pump is operating 
properly.

‡

Is the charge correct (refer to the temperature/pressure 

curve)?

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- Overcharging will result in frequently switching 
to HP safety mode.

(If  you  still  have  doubts  as  to  the  charge,  perform  the 
charging with an electronic scale).

‡

Outdoor unit defrosting is controlled by the exchanger 

sensor and the controller board. 

If the defrost sensor is not iced up while the rest of the 
exchanger is, then:

- Move the sensor between the exchanger blades 
to a place where the exchanger is iced up.

- If all these points have been checked, replace 
the outdoor controller board.

Note:

Outdoor unit defrosting is controlled by the exchanger 
sensor and the controller board. If no frosting is observed 
and  no  anomaly  is  otherwise  noted,  the  sensor  and 
board  must  be  inspected  and  the  faulty  part  will  have 
to be replaced.

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Defrost beginning conditions 

 

 

62’ < t < 240’ 

Start of heat mode 

(Compressor ON) 

Cumulative compressor operating time 

 

Defrost 

 (No defrost for 10 min)

1

st

 defrost 

Subsequent defrosts 

240’ < t  

17’ < t < 62’ 

240’ < t 

35’ < t < 240’

O Exch T  

”

 -9°C 

O Exch T  

”

 -5°C 

O Exch T  

”

 -3°C 

O Exch T  

”

 -10°C 

O Exch T  

”

 -3°C 

OT – O Exch T >5°C 

O Exch T : outdoor unit exchanger temperature 
OT : outdoor temperature 
t : Cumulative compressor operating time 

Maintenance document "1546 - EN"

Outoor unit - excellia (duo) 

WOYGxxxLCT_WOYKxxxLCT

- 35 -

Summary of Contents for WOYG LCT Series

Page 1: ...lit heat pump Document n 1545 1 25 07 2014 WOYG LCT WOYK LCT atlantic comfort com 6XEMHFW WR PRGL FDWLRQV ZLWKRXW QRWLFH 1RQ FRQWUDFWXDO GRFXPHQW FR EN NL IT DE ES PT PL PT PT single phase outdoor unit 3 phase outdoor unit WOYG112LCT WOYK112LCT WOYG140LCT WOYK140LCT WOYK160LCT ...

Page 2: ...36 Electrical 36 Operating checks 36 Disassembly Process of Outdoor Unit 37 Single phase type 37 Appearance 37 Service panel removal 37 Top panel removal 37 MAIN PCB FILTER PCB and INDICATOR PCB removal 38 FAN MOTOR removal 40 VALVE COVER removal 40 RIGHT PANEL removal 41 THERMISTOR removal 41 SOLENOID COIL removal 42 EEV COIL removal 43 PRESSURE SENSOR removal 43 COMPRESSOR removal 44 3 phase typ...

Page 3: ...emove the front right hand facing from the outdoor unit DXOWV DUH FRGHG E ÀDVKHV UURU PHVVDJHV DUH listed in the table below On the outdoor unit When an error occurs The diode ERROR 2 blinks Press once on the switch ENTER SW4 The ERROR 2 diode blinks several times depending on the error s type SW1 SW2 SW3 SW4 SW5 1 2 3 4 5 Diodes and switches Diodes and switches Terminal block SW2 SW3 SW4 SW5 1 2 ...

Page 4: ...r temperature thermistor error 9 ÀDVKHV ÀDVKHV ÀDVKHV Heat sink thermistor error 10 ÀDVKHV ÀDVKHV ÀDVKHV Expansion valve thermistor error 14 ÀDVKHV ÀDVKHV ÀDVKHV Pressure sensor error 24 ÀDVKHV ÀDVKHV ÀDVKHV Current trip permanent stoppage 15 ÀDVKHV ÀDVKHV ÀDVKHV Detection of compressor position error permanent stoppage 33 ÀDVKHV Compressor start up error permanent stoppage 17 ÀDVKHV ÀDVKHV ÀDVKHV...

Page 5: ...n the outdoor unit terminal block OK 4 Check the serial signal Check the voltage between terminals 2 and 3 of the outdoor terminal block The voltage must fluctuate between AC 70 V and AC 130 V If it doesn t replace Main PCB OK 1 2 Check for external causes Check the system s overall isolation Check for any equipment generating electromagnetic waves which interfere with the communication between th...

Page 6: ...al Check the voltage between terminals 2 and 3 of the outdoor terminal block The voltage must fluctuate between AC 70 V and AC 130 V If it doesn t replace Interface PCB OK 1 2 Check for external causes Check the system s overall isolation Check for any equipment generating electromagnetic waves which interfere with the communication between the hydraulic unit and the outdoor unit 2 Check the conne...

Page 7: ... Heat pump regulator PCB See if the connector has been disconnected See if the connection is correct Check for any damage on the sensor cable After solving the misconnection problem switch the heat pump back on 2 Check resistance value 3 pin of CN22 M 10 OK 3 Replace interface PCB If check point 1 and 2 do not improve the symptom replace Interface PCB OK Maintenance document 1546 EN Outoor unit ex...

Page 8: ... the misconnection problem switch the heat pump back on 2 Remove the sensor and check its resistance value Check the resistance value Temperature C 0 5 10 15 20 25 30 35 40 45 50 Resistance k 176 134 103 80 3 62 9 49 7 39 6 31 7 25 6 20 8 17 1 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of hydraulic unit and check terminal voltage at the...

Page 9: ...resistance value Check the resistance value Temperature C 0 5 10 15 20 30 40 50 Resistance k 168 130 101 79 63 40 26 3 17 8 Temperature C 60 70 80 90 100 120 Resistance k 12 3 8 7 6 3 4 6 3 4 2 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no voltage replace Main P...

Page 10: ...n 2 Remove the sensor and check its resistance value Check the resistancer value Temperature C 10 5 0 10 15 20 25 30 Resistance k 27 5 20 9 16 1 12 4 9 73 7 67 6 1 3 95 If the thermistor is faulty replace it 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no voltage replace Main PCB OK OK THERMISTOR COMPRESS...

Page 11: ...or and check its resistance value Check the resistance value Temperature C 20 10 5 0 5 10 15 20 30 40 50 60 70 Resistance k 115 62 3 46 6 35 2 26 9 20 7 16 1 12 6 7 97 5 18 3 45 2 36 1 65 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no voltage replace Main PCB OK ...

Page 12: ...stance value Check the resistance value Temperature C 0 5 10 15 20 30 40 50 Resistance k 15 8 12 2 9 5 7 5 5 9 3 78 2 50 1 69 Temperature C 60 70 80 90 100 120 Resistance k 1 17 0 83 0 6 0 44 0 33 0 19 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no voltage replac...

Page 13: ...resistance value Check the resistance value Temperature C 0 5 10 15 20 30 40 50 Resistance k 168 130 101 79 63 40 26 3 17 8 Temperature C 60 70 80 90 100 120 Resistance k 12 3 8 7 6 3 4 6 3 4 2 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no voltage replace Main P...

Page 14: ...ack on 2 Remove the sensor and check its resistance value Check the resistance value Temperature C 10 5 0 10 15 20 25 30 Resistance k 27 5 20 9 16 1 12 4 9 73 7 67 6 10 3 95 If the thermistor is faulty replace it 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no voltage replace Main PCB OK OK THERMISTOR COM...

Page 15: ...s resistance value Check the resistance value Temperature C 0 5 10 15 20 30 40 50 Resistance k 168 130 101 79 63 40 26 3 17 8 Temperature C 60 70 80 90 100 120 Resistance k 12 3 8 7 6 3 4 6 3 4 2 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no voltage replace Main...

Page 16: ...le is open Upon correcting the removed connector or mis wiring reset the power OK 3 KHFN 2XWGRRU DQ Check Outdoor Fan Motor Refer to Clear 18 If the Fan Motor is failure replace it OK 4 Check Compressor Refer to Service parts information 2 Inverter compressor If it is abnormal replace compressor OK 2 Check Outdoor Heat Exchanger Is there any obstructing the air flow route Is there any clogging of ...

Page 17: ... 2 Inverter compressor If it is abnormal replace compressor 3 Replace the electronic board If steps 1 and 2 do not solve the problem replace Inverter PCB OK 1 KHFN FRQQHFWLRQV FRQGLWLRQ LQ FRQWURO XQLW Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed connector or mis wiring reset th...

Page 18: ...m 2 Check the ambient temperature around the motor Check excessively high temperature around the fan Wait until the temperature comes down again and switch the fan back on 3 Check the main board output voltage On the outdoor unit check the output voltage DC of the following connectors Terminals Voltage 1 red 3 black 300 390V 4 white 3 black 15 2V If the voltage is incorrect replace Main PCB OK OK ...

Page 19: ...WLYH OWHU HUURU RQO IRU VLQJOH SKDVH W SH LED Hydraulic Unit Outdoor Unit Green Red ÀDVKHV ÀDVKHV ÀDVKHV Probable causes Connection failure FWLYH OWHU PRGXOH IDLOXUH Main PCB failure Check Clear 21 1 Check connections in control unit Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed ...

Page 20: ...er Are EEV and Strainer open If EEV or Strainer is defective replace it OK Heating mode 3 Check if gas leak or less gas Measure gas pressure if there is a leak correct it If recharging refrigerant make sure to perform vacuuming and recharge the specified amount OK OK 4 Check Discharge Pipe Thermistor Is it on the holder Is there a cable pinched Check characteristics of thermistor Refer to Clear 7 ...

Page 21: ...output voltage of Pressure Sensor Check voltage of Main PCB Measure at Main PCB side connector 2 pin White 3 pIn Black Voltage is refer to the following graph If the voltage is not correct replace Presure Sensor OK 1 Check connection of the Pressure Sensor Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon ...

Page 22: ...er is defective replace it OK Heating mode 3 Check if gas leak or less gas Measure gas pressure if there is a leak correct it If recharging refrigerant make sure to perform vacuuming and recharge the specified amount OK OK 4 Check compressor temperature Thermistor Is it on the holder Is there a cable pinched Check characteristics of thermistor Refer to Clear 11 If defective replace the thermistor ...

Page 23: ...eak or less gas Measure Gas pressure if there is a leak correct it If recharging refrigerant make sure to perform vacuuming and recharge the specified amount OK 1 Check connection of the Pressure Sensor Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed connector or mis wiring reset t...

Page 24: ... pin brown 2 pin Red DC5V 5 If the voltage is not correct replace Main PCB OK 3 Replace PFC PCB If Check Point 1 2 do not improve the symptom replace PFC PCB OK 1 Check connections of between Main PCB and PFC PCB Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed connector or mis wiri...

Page 25: ...FWLRQV FRQGLWLRQ LQ FRQWURO XQLW Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed connector or mis wiring reset the power OK 2 Replace the electronic board If steps 1 does not solve the problem replace Main PCB Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxx...

Page 26: ... Check for any equipment generating electromagnetic waves which interfere with the communication between the Hydraulic Unit and the outdoor unit 3 Check the electrical components If all of these checks are unsuccessful replace Interface PCB OK OK OK Check that a voltage between AC 198 and AC 264 V exists between terminals 1 and 2 on the Hydraulic Unit terminal block NO Check Interface PCB for o ei...

Page 27: ... interfere with the communication between the Hydraulic Unit and the outdoor unit OK OK 1 Check the installation Is the circuit breaker cut off Check the wiring NO If all of these checks are unsuccessful replace Main PCB OK Check that a voltage between AC 198 and AC 264 V exists between terminals 1 and 2 on the Hydraulic Unit terminal block Check Main PCB power supply for o either the fuse F1 F3 o...

Page 28: ...re the valves open 4 Check the configuration of the room Is the heat pump power suited to the need 5 Inspect the Hydraulic Unit and outdoor unit installation Check the refrigeration connections length diameter 6 Inspect the refrigeration circuit See if the dehydrator is clogged there should be no temperature variation between the dehydrator input and output in normal operating conditions Check the...

Page 29: ... stable Is the protection screen properly mounted Is the propeller broken or distorted Has the propeller screw been lost Is any object blocking the propeller rotation OK Check for any vibration noise caused by a bolt Check for any sound of contact with a pipe OK Is the compressor locked OK Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 29 ...

Page 30: ...hod of compressor if outdoor unit LED displays error refer to Failures and clears Abnormal noise Stops soon after starting up Is there open or loose connection cable Check connection of compressor and winding resistance Refer to the next page If there is no failure the defected of compressor is considered locked compressor due to clogged dirt or less oil Replace compressor Is there open or loose c...

Page 31: ... Check winding resistance on each terminal If the resistance value is 0 or infinite replace compressor Check point 3 replace Main PCB If check point 1 and 2 do not improve the symptom replace Main PCB RED BLACK WHITE BLACK WHITE Compressor Resistance value 0 24 at 20 C for single phase type 0 79 at 20 C for 3 phase type Main PCB Service parts information 2 Inverter compressor Maintenance document ...

Page 32: ...e between inlet and outlet If it is open it has no temp Add period difference between inlet and outlet There is no refrigerant flow coming to EEV INJ while the liquid injection is inactive Check whether the liquid injection is active before executing check point 5 for EEV INJ Check point 6 Check stainer Stainer normally does not have temperature difference between inlet and outlet as shown in 1 bu...

Page 33: ...her is no temperature difference between inlet and outlet If the valve closes by removing the connector of the valve which does not close it is considered to be Main PCB failure Replace Main PCB If it does not closeby removing connector there is a possibility of 1 clogging by dirt or 2 deformation by the heat at the time of solenoid valve installation In this case replace solenoid valve SV SOLENOI...

Page 34: ...s observed with those in the table Multimeter Resistor 1 MOhm or more N W V U P Main PCB Terminal block 3 phase type Single phase type Inspection of the Power Transistor Module Inverter PCB 2 2 Refrigeration System 2 2 1 Unit produces no heat The unit remains in continuous scanning mode Initial checks Check the settings Are the data sent by the user interface received by the heat pump Refrigeratio...

Page 35: ...nic scale Outdoor unit defrosting is controlled by the exchanger sensor and the controller board If the defrost sensor is not iced up while the rest of the exchanger is then Move the sensor between the exchanger blades to a place where the exchanger is iced up If all these points have been checked replace the outdoor controller board Note Outdoor unit defrosting is controlled by the exchanger sens...

Page 36: ...ll operating If not change the bad fuse s Is the connection between the outdoor unit and the Hydraulic Unit correct Do you read 230V AC between terminals 1 and 2 of the Hydraulic Unit terminal block Do you read 230V AC at the transformer primary on the Hydraulic Unit If not change the board Is there any voltage on the transformer secondary on the Hydraulic Unit If not check the thermal fuse If the...

Page 37: ... 4 1 Single phase type 4 1 1 Appearance 4 1 2 Service panel removal Screw serrated Hook 3 places Remove the mounting screws Remove the SERVICE PANEL by sliding downward 4 1 3 Top panel removal Screw with washer Remove the mounting screws Screw with washer Screw serrated Remove the TOP PANEL Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 37 Outoor unit excellia duo WOYG...

Page 38: ...CB and INDICATOR PCB removal screws Hook 2 places Remove the 1 mounting screw Remove the INVERTER BOX COVER by sliding upward DIODE BRIDGE MAIN PCB ACTPM FILTER PCB INDICATOR PCB Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 38 Outoor unit excellia duo WOYGxxxLCT ...

Page 39: ...pation compound on the other side of IPM when you exchange INVERTER PCB by the repair screw screw Screw of IPM 2 places Holder IPM Screw Screw Holder Earth screw Filter PCB Remove the connectors and screws Remove the earth screw Remove the FILTER PCB Remove the connectors and locking spacers Locking spacers Remove the INDICATOR PCB Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_W...

Page 40: ... D cutting position And the tightening torque at the installation Tightening torque is from 10 to 15 N M Cut the binder 2 places Loose the clamp 2 places and remove the lead wires Remove the 4 mounting screws Remove the FAN MOTOR 4 1 6 VALVE COVER removal Hook 4 places screw Remove the mounting screws Remove the VALVE COVER Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLC...

Page 41: ...sliding upward Screw serrated 4 1 8 THERMISTOR removal HEAT EXCHANGER MID THERMISTOR HEAT EXCHANGER OUT THERMISTOR Remove the THERMISTOR SPRING Remove the THERMISTOR Remove the THERMISTOR SPRING Remove the THERMISTOR Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 41 Outoor unit excellia duo WOYGxxxLCT ...

Page 42: ...OLDER Open the THERMO HOLDER and remove the THERMISTOR hook 4 1 9 SOLENOID COIL removal 4WAY VALVE INJECTION Remove the mounting screw Remove the SOLENOID COIL Remove the mounting screw Remove the SOLENOID COIL Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 42 Outoor unit excellia duo WOYGxxxLCT ...

Page 43: ...R removal removal Warning Wear gloves to prevent the frostbite because a small amount of refrigerant leaks during work Remove the PRESSURE SENSOR with wrench Note the tightening at the installation Tightening torque is 12 1 5N m Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 43 Outoor unit excellia duo WOYGxxxLCT ...

Page 44: ...ve gas and 3Way valve liquid 4 Collect the refrigerant from the 3Way valve Start the following work after completely collecting the refrigerant Do not reuse the refrigerant that has been collected Compressor cover B Compressor cover A Remove the COMPRESSOR COVER B and COVER A Remove the TERMINAL COVER Remove the connectors R RED C T BLACK S W WHITE Compressor cover C Maintenance document 1546 EN O...

Page 45: ... is a possibility of catching fire to oil when removing by the welding without cutting it Range screw Remove the 2 mounting screws Remove this place and remove COMPRESSOR with ACCUMULATOR Procedure for compressor installation Reverse procedure to removing the compressor Precautions for installation of compressor 1 KHQ EUD LQJ GR QRW DSSO WKH ÀDPH RQ WKH WHUPLQDO 2 When brazing be sure to replace t...

Page 46: ...the mounting screws Remove the SERVICE PANEL by sliding downward 4 2 3 Insulation sheet removal INSULATION SHEET Hook 4 places Remove the Hook 4 places Remove the INSULATION SHEET by sliding upward Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 46 Outoor unit excellia duo WOYKxxxLCT ...

Page 47: ...VERTER PFC FILTER and CAPACITOR PCB removal Screws Hook Hook Slit Remove the 4 mounting screws Remove the INVERTER CASE MAIN by slinding upward Hang the hook on the slit PFC PCB FILTER PCB INVERTER PCB CAPACITOR PCB CONDENSER CASE Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 47 Outoor unit excellia duo WOYKxxxLCT ...

Page 48: ...change INVERTER PCB by the repair Screw Screws Hook Holder IPM Remove the connectors and screws For screws of IPM Note the tightening torque at the installation Tightening torque is 1 2 0 2N M Remove the PFC PCB Spread the heat dissipation compound on the other side of IPM when you exchange PFC PCB by the repair Locking spacers Spacers Earth screw Remove the connectors locking spacers spacers and ...

Page 49: ... the CONDENSER CASE by sliding rightward Screws Remove the mounting screws Remove the CONDENSER COVER by sliding toward CAPACITOR PCB Locking spacers Remove the locking spacers Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 49 Outoor unit excellia duo WOYKxxxLCT ...

Page 50: ...ing torque is from 10 to 15Nm Cut the binder 2 places Loose the clamp and remove the lead wires Remove the 4 mounting screws Remove the FAN MOTOR 4 2 7 TOP PANEL removal Screw with washer Screw with washer Screw serrated Remove the mounting screws Remove the TOP PANEL 4 2 8 PIPE COVER FRONT removal Screw serrated Screw with washer Hook Remove the mounting screws Remove the PIPE COVER FRONT Mainten...

Page 51: ...val Remove the connectors Remove the 3 mounting screws 4 2 11 THERMISTOR removal R removal HEAT EXCHANGER MID THERMISTOR HEAT EXCHANGER OUT THERMISTOR Remove the THERMISTOR SPRING Remove the THERMISTOR Remove the THERMISTOR SPRING Remove the THERMISTOR Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 51 Outoor unit excellia duo WOYKxxxLCT ...

Page 52: ...MOR HOLDER Open the THERMO HOLDER and remove the THERMISTOR hook 4 2 12 SOLENOID COIL removal 4WAY VALVE INJECTION Remove the mounting screw Remove the SOLENOID COIL Remove the mounting screw Remove the SOLENOID COIL Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 52 Outoor unit excellia duo WOYKxxxLCT ...

Page 53: ...emoval removal Warning Wear gloves to prevent the frostbite because a small amount of refrigerant leaks during work Remove the PRESSURE SENSOR with wrench Note the tightening at the installation Tightening torque is 12 1 5N m Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 53 Outoor unit excellia duo WOYKxxxLCT ...

Page 54: ... valve liquid 4 Collect the refrigerant from the 3Way valve Start the following work after completely collecting the refrigerant Do not reuse the refrigerant that has been collected Compressor cover C Remove the COMPRESSOR COVER C COVER B and COVER A Remove the TERMINAL COVER Remove the connectors R RED C T BLACK S W WHITE Compressor cover B Compressor cover A Maintenance document 1546 EN Outoor u...

Page 55: ...njection port in this range Keep their shape better There is a possibility of catching fire to oil when removing by the welding without cutting it Procedure for compressor installation Reverse procedure to removing the compressor Precautions for installation of compressor 1 KHQ EUD LQJ GR QRW DSSO WKH ÀDPH RQ WKH WHUPLQDO 2 When brazing be sure to replace the air in the pipe with nitrogen gas to p...

Page 56: ...en gas to prevent forming oxidization scale Part name Allowable temperature Precautions in work EXPANSION VALVE MAIN 120 C Remove the coil before brazing And install the coil after brazing Detaching necessity sensor EXPANSION VALVE INJECTION 120 C Remove the coil before brazing And install the coil after brazing 4 WAY VALVE 120 C Remove the suction temp sensor before brazing And install the suctio...

Page 57: ... Maintenance document 1546 EN Outoor unit excellia duo WOYGxxxLCT_WOYKxxxLCT 57 ...

Page 58: ...I UHIULJHUDQW RLO DQG RWKHU SDUWV PXVW EH GRQH E D TXDOL HG LQVWDOOHU LQ DFFRUGDQFH ZLWK UHOHYDQW ORFDO DQG QDWLRQDO UHJXODWLRQV This appliance must be treated at a specialized treatment facility for re use recycling and other forms of recovery and shall not be disposed of in the municipal waste stream Please contact the installer or local authority for more information subject to the national law...

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