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230V 24K R410A Indoor Unit

Exploded Views and Parts list

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Содержание GWH18MC-D3DNA1A/O

Страница 1: ...Service Manual MODEL Refrigerant R 410A BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL GWH18MC D3DNA3A GWH24MD D3DNA3A ONLY FOR AUTHORIZED SERVICE PERSONNEL ...

Страница 2: ...it 10 3 2 Outdo or Unit 11 5 1 Electrical wiring 14 5 2 Printed Circuit Board 15 6 1 Remote Control Operations 17 6 2 Changing batteries and notice 21 6 3 Description of each control operation 23 10 1 Removal Procedure of Indoor Unit 72 10 2 Removal Procedure of Outdoor Unit 76 Part 4 Refrigerant System Diagram 33 Part 4 Refrigerant System Diagram 33 Malfunction Analysis Error Code List Troublesho...

Страница 3: ...1 Summary and features Indoor Unit Outdoor Unit Remote control window YB1FAF Summary and features GWH18MC D3DNA3A GWH24MD D3DNA3A GWH18MC D3DNA1A O GWH24MD D3DNA1A O ...

Страница 4: ...n of snow leaves or rubbish The unit should be installed according to the instructions in order to minimize the risk of damage from earthquakes typhoons or strong winds When the refrigerant touches the fire eWc it was decomposed and a poisonous gas is generated Use only the specified refrigerant to charge the reIrigerant circuit Do not mix it with any other refrigerant and do not allow air to rema...

Страница 5: ...mension of Package L W H mm g k t h g i e W s s o r G t h g i e W t e N Model Function Product Code Rated Voltage Frequency Hz Total Capacity W Standard Low High Total Capacity Btu h Standard Low High Power Input W Standard Low High Rated Input W Rated Current A Air Flow Volume m3 h SH H M L Dehumidifying Volume l h EER C O P W W s s a l C y g r e n E Indoor unit HEATING 7325 1200 7325 25000 4100 ...

Страница 6: ...frosting Method Climate Type Isolation Moisture Protection Permissible Excessive Operating Pressure for the Discharge Side MPa Permissible Excessive Operating Pressure for the Suction Side MPa Sound Pressure Level dB A Sound Power Level dB A Dimension W H D mm Dimension of Package L W H mm Max Distance Net Weight Gross Weight kg Refrigerant and Charge kg e d o C t c u d o r P Connecti on Pipe Leng...

Страница 7: ... s s a l C y g r e n E h l e m u l o V g n i y f i d i m u h e D W W P O C R E E A t n e r r u C d e t a R Air Flow Volume m3 h SH H M L Power Input W Standard Low High W t u p n I d e t a R Total Capacity W Standard Low High Total Capacity Btu h Standard Low High e g a t l o V d e t a R z H y c n e u q e r F l e d o M n o i t c n u F e d o C t c u d o r P HEATING 7618 1260 7618 26000 4300 26000 2...

Страница 8: ...or μF Air Flow Volume of Outdoor Unit m3 h Fan Type Piece Fan Diameter mm Defrosting Method Climate Type Isolation Moisture Protection Permissible Excessive Operating Pressure for the Discharge Side MPa Permissible Excessive Operating Pressure for the Suction Side MPa Sound Pressure Level dB A Sound Power Level dB A Dimension W H D mm Dimension of Package L W H mm Net Weight Gross Weight kg Refrig...

Страница 9: ...Pipe length 7 6m 220V 230V 240V 220V 230V 240V 0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120 110 80 11 10 9 8 7 6 5 4 3 2 1 0 Compressor speed rps A t n e r r u C 11 10 9 8 7 6 5 4 3 2 1 0 Compressor speed rps A t n e r r u C Conditions Indoor DB26 7 C WB19 4 C Outdoor DB35 C WB23 9 C Indoor air flow Turbo Pipe length 7 6m Conditions Indoor DB21 1 C WB15 6 C Outdoor DB8 C WB6 11 C...

Страница 10: ...m Cooling Heating Standard pressure Indoor Outdoor P MPa T1 C T2 C 18K 0 9 to 1 1 12 to 14 41 to 43 High High 62 24K 0 8 to 1 0 10 to 12 43 to 45 High High 78 Outdoor fan mode Compresso r revolution rps 26 7 19 4 35 Temperature condition C Model name Heat exchanger pipe temp Indoor fan mode Standard pressure Indoor Outdoor P MPa T1 C T2 C 18K 2 2 to 2 4 37 to 38 2 to 4 High High 62 24K 2 5 to 2 7 ...

Страница 11: ...2 5 Noise criteria curve tables for both models 50 40 30 Indoor side noise when blowing Outdoor side noise Indoor fan motor rotating speed Compressor frequency Hz Specifications Low Middle High Super High ...

Страница 12: ...10 3 Construction Views 3 1 Indoor Unit Constrction views Tube exit Air inlet Right Left Ceiling W D H MODEL W H D 18K 940 298 200 24K 1008 315 219 18K 24K ...

Страница 13: ...11 3 2 Outdoor Unit 18K Constrction views 60cm m c 0 6 m c 0 6 m c 0 0 2 Bolt Nut Wrench 340 890 700 963 560 368 396 ...

Страница 14: ...12 24K 60cm m c 0 6 m c 0 6 m c 0 0 2 Bolt Nut Wrench 370 920 1000 610 399 427 790 Constrction views ...

Страница 15: ...g Heating Models Refrigerant System Diagram 2 Way valve Strainer Strainer Strainer 3 Way valve Muffler 4 Way valve Expansion valve Heat exchanger INDOOR Heat exchanger OUTDOOR r o t a l u m u c c a b u S r o s s e r p m o C Cooling Heating ...

Страница 16: ...5 Schematic Diagram 5 1 Electrical wiring Schematic Diagram Models GWH18MC D3DNA3A GWH24MD D3DNA3A These circuit diagrams are subject to change without notice please refer to the one supplied with the unit ...

Страница 17: ...15 5 2 Printed Circuit Board TOP VIEW BOTTOM VIEW Schematic Diagram ...

Страница 18: ...16 TOP VIEW BOTTOM VIEW Schematic Diagram ...

Страница 19: ...when unit is stop running and indoor fan motor turns on blowing heat will act 3 Protection function under heating mode compressor will stop to run due to malfunction happened indoor fan motor will blow surplus heat 4 Defrost ing control Whenrece iving thedefrost ing signal from outdoorunit displayerwill display H1 10slater indoor fan motor will stop to run 5 Anti coold wind function 6 Blow heat ai...

Страница 20: ...le Note in the case that the unit is switched off with the remote controller or the compressor is switched on again failure display waiting time 200s shall be cleared Frequency limitation and reduction states shall be displayed by means of remote calling 2 Failure display control Indicator failure display shall be kept synchronous with Double 8 failure display that is during indicator blinking fai...

Страница 21: ...n What will be memorized includes modes up and down wind blow light preset temperature preset wind speed general timing no memory for moment timing and Fahrenheit Celsius degree When the unit is powered on again after power failure operation continues according to memorized content If timing is not set by the last remote control command the system will memorize the last remote control command and ...

Страница 22: ...ermo bulb When conditions a and b are satisfied the outdoor exhaust temperature thermo bulb is judged not to be connected into place the mainboard of outer units will display failure of the outdoor exhaust temperature thermo bulb not connected into place stop the machine for repairing and resume the machine by remote controls of ON OFF a Judgment of exhaust detection temperature change After the c...

Страница 23: ...Logic 1 Compressor Control Start the compressor after starting cooling heating dehumidifying operations and the outer fans start for 5s When the machine is shutdown in safety stops and when switching to air supplying mode the compressor will stop immediately In all modes once the compressor starts up it will not be allowed to stop until having run for the tmin compressor running time Note includin...

Страница 24: ...f If the T inner pipe T frozen preventing power turn off temperature then frozen preventing protect to stop the machine If T frozen preventing frequency limited temperature T inner pipe and the compressor has stopped working for 3 minutes the whole machine should be allowed to operate 6 If the frozen preventing protection power turn off continuously occurs for six times it should not be resumed au...

Страница 25: ...ducing temperature at normal speed T outer pipe then Cooling overload protects machine stopping 4 Power turn off If the T heating overload power turn off temperature T inner pipe then overload protects machine stopping If T inner pipe T heating overload frequency limited temperature and the compressor has been stopped working for 3 minutes the machine should be allowed to operate 5 If the overload...

Страница 26: ...30 minutes 7 Communication fault When you have not received any correct signal from the inner machine in three minutes the machine will stop for communication fault When you have not received any correct signal from driver IC aim to the controller for the separating of main control IC and driver IC and the machine will stop for communication fault If the communication is resumed the machine will b...

Страница 27: ...running process of compressor you could measure the phase current of the compressor and control it according to the following steps 1 Frequency limited If I Limited frequency phase current I Phase current T frequency reducing phase current you should limit the frequency raising of compressor 2 Reducing Frequency If I Frequency Reducing Phase Current I Phase Current I Power Turn Off Phase Current t...

Страница 28: ...ate 16 PFC Protection 1 After start up the PFC it should detect the protection signal of PFC immediately under the condition of PFC protection it should turn off the PFC and compressor at one time 2 It shows the failure is cleared out if PFC Protection stopped working 3 min and recovers to run automatically 3 If it still can t run when it occurs PFC protection for 3 times in succession it is avail...

Страница 29: ... Center in the local area 7 8 9 Important Notices Basic Requirements For Installation Position Install in the following place may cause malfunction If it is unavoidable contact with service center please Place where strong heat sources vapors flammable gas or volatile object are emitted Place where high frequency waves are generated by radio equipment welders and medical equipment Place where a lo...

Страница 30: ...not be cut off and be fix it by screw otherwise it would cause electric shock 3 The earth resistance should accord to the National Criterion 4 The user power must offer the reliable earthing terminal Please don t connect the earthing wire with the following place Tap water pipe Gas pipe Contamination pipe Other places that professional personnel consider them unreliable 5 The appliance shall be in...

Страница 31: ...sleeve into the hole to prevent the connection piping and wiring from being damaged when passing through the hole Install the water drainage pipe 1 For well draining the drain hose should be placed at a downward slant 2 Do not wrench or bend the drain hose or flood its end by water 3 When the long drainage hose passing through indoor should wrap the insulation materials Wrenched Bent Flooded Indoo...

Страница 32: ...ff the tailings 1 and tailings 2 when routing both the wiring and piping Take out the piping from body case wrap the piping electric wire water pipe with tape and pull them through the piping hole As show in Fig 8 Hange the mounting slots of the indoor unit on the upper tabs of the rear panel and check if it is firm enough As show in Fig 9 The height of the installed location should be 2 m or more...

Страница 33: ...with cord anchorage for cooling and heating unit use the cord anchorage to fix the power connection cable and the signal control wire Ensure wire has been fixed well Install the handle 5 1 0 10 pa 76cmHg 1 Connect charging hose of manifold valve to charge end of low pressure valve both high low pressure valves must be tightly shut 2 Connect joint of charging hose to vacuum pump 3 Fully open handle...

Страница 34: ...38 8 Exploded Views and Parts List 230V 18K R410A Indoor Unit Exploded Views and Parts list ...

Страница 35: ... a n i m r e T 2 3 1 r e v o C x o B c i r t c e l E 3 3 x o B c i r t c e l E f o r e v o c d l e i h S 4 3 r e l l o r t n o C e t o m e R 5 3 2 r e v o C x o B c i r t c e l E 6 3 h s u B e l i x A t f e L 7 3 h s u B e l i x A 8 3 3 A l e n a p t n o r F 9 3 w o d n i W r e v i e c e R 0 4 y s s A l e n a P t n o r F 1 4 Description NO Ambient Temperature Sensor 26 1 3 2 1 1 1 1 1 1 1 1 1 1 1 ...

Страница 36: ...40 230V 24K R410A Indoor Unit Exploded Views and Parts list ...

Страница 37: ...r o s n e S e b u T 1 3 1 r e v o C x o B c i r t c e l E 2 3 x o B c i r t c e l E f o r e v o c d l e i h S 3 3 r e l l o r t n o C e t o m e R 4 3 2 r e v o C x o B c i r t c e l E 5 3 r e v o C w e r c S 6 3 l e n a P t n o r F 7 3 y s s A l e n a P t n o r F 8 3 w o d n i W r e v i e c e R 9 3 Description NO Ambient Temperature Sensor 24 2 1 1 1 1 2 1 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

Страница 38: ...44 Exploded Views and Parts list 230V 18K R410A Outdoor Unit ...

Страница 39: ...6 Clapboard Sub Assy 01232902 1 17 Condenser Assy 01113386 1 18 Front Grill 01473049 1 19 Wiring clamp 26115004 1 20 Temperature Sensor 3900030901 1 21 Capacitor CBB65 33000065 1 22 Capacitor Clamp sub assy 01413098 1 23 Electric expand valve fitting 4300876704 1 24 handle Assy 02113109 1 25 Cut off valve Sub Assy Liquid 07133058 1 26 Valve cover 22245002 1 27 Cut off valve Sub Assy Gas 07133060 1...

Страница 40: ...48 Exploded Views and Parts list 230V 24K R410A Outdoor Unit ...

Страница 41: ...1 16 Condenser Assy 01113446 1 17 Front Grill 01473050 1 18 Wiring clamp 26115004 1 19 Temperature Sensor 3900030901 1 20 Reactor 43130021 1 21 Capacitor CBB65 33000039 1 22 Right Side Plate 0130504402P 1 23 handle Assy 02113109 1 24 Cut off valve Sub handle 07133603 1 25 Valve cover 22245003 1 26 Valve Support Sub Assy 0171501201P 1 27 Baffle valve support 01365435P 1 28 Cut off Valve 07130239 1 ...

Страница 42: ...the remote startup has no response The remote controller does not receive signals after it is powered the buzzer will sound unless it has malfunction The circuit or the part of the air conditioner has malfunction They heat and break the insulation and lead to short circuit or creepage Measure the insulation resistance or eliminate the malfunc tion one by one If the breaker itself has malfunction t...

Страница 43: ...the thick and thin pipes is good Heat insulation must also be provided for the joint andthe exposed part of the copper pipe Block of outdoor heat ex changer Clean the dust accumulated on the surface of the heat exchanger Air filter were blocked Clean the filter Fan speed was set too slow To set the fan speed to high or middle speed Air circulation is insufficient Fan rotation speed becomes low Cap...

Страница 44: ...running capacitor of compressor Replace the capacitor The voltage is too low or too high Manostat is recommended Wrong wire connection Connect the circuit diagram correctly When cooling or heating outdoor fanruns compressor doesn t run The protector itself has malfunction Use the multimeter to check whether the contact of the compressor is on when it is not overheated If it is not on then replace ...

Страница 45: ...n screws Touch of pipeline of outdoor unit Separate the touching pipeline Touch of inner plates Louver of outdoor unit is touching outer case Abnormal sound inside compressor Change compressor Adjust location of louver 1 Tighten connect screw 2 Stick absorbing clay between plates In cool heat outdoorunit and will not run Controller malfunction IC 2003 broken creepage of parallel of relay loop re l...

Страница 46: ...ROOHU LQYHUWHU 7KHUHIRUH LI WKH SRZHU VXSSO LV WXUQHG RII FKDUJH FKDUJLQJ YROWDJH 9 WR 9 UHPDLQV DQG GLVFKDUJLQJ WDNHV D ORW RI WLPH IWHU WXUQLQJ RII WKH SRZHU VRXUFH LI WRXFKLQJ WKH FKDUJLQJ VHFWLRQ EHIRUH GLVFKDUJLQJ DQ HOHFWULFDO VKRFN PD EH FDXVHG LVFKDUJH WKH HOHFWURO WLF FDSDFLWRU FRPSOHWHO E XVLQJ VROGHULQJ LURQ HWF Discharging method UHPRYH WKH LQYHUWHU FRYHU 2XWGRRU 8QLW V VKRZQ EHORZ FRQ...

Страница 47: ...erates ON normally 2 Confirmation of Power Voltage Confirm that power voltage is AC 220 230 240 10 If power voltage is not in this range the unit may not operate normally 2 Flashing LED of Indoor Outdoor Unit and Primary Judgement D40 D41 D42 D43 1 E1 2 E2 3 E4 Discharging Position 9 2 Error Code ...

Страница 48: ...QGRRU IDQ PRWRU ZLOO ZRUN HDW DOO ZLOO VWRS RROLQJ GHKXPLGLI LQJ FRPSUHVVRU ZLOO VWRS LQGRRU IDQ PRWRU ZLOO ZRUN HDW DOO ZLOO VWRS RROLQJ GHKXPLGLI LQJ DIWHU UXQQLQJ IRU PLQV ODWHU WKH FRPSUHVVRU ZLOO VWRS WR UXQ LQGRRU IDQ PRWRU ZLOO VWDUW WR UXQ KHDWLQJ DIWHU UXQ PLQV ODWHU DOO ZLOO VWRS WR UXQ 2YHUORDG QRUPDO RSHUDWLRQ FRPSUHVVRU LV UXQQLQJ IUHTXHQF GHVFHQGLQJ 2YHUORDG QRUPDO RSHUDWLRQ FRPSUHVV...

Страница 49: ...ll will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running It is normal function The circuit on AP1 has malfunction replace the outdoor un...

Страница 50: ...place the outdoor control board AP1 Indoor unit air return is poor or fan speed is too low 1 Power supply voltage is lower than AC175V 2 Wire terminal 4V loosen or wire break 3 4V damaged replace 4V Whole unit break for 20mins and discharge to check the outdoor control board AP1 s IPM module coolant whether is short the radiator is tightened If above phenomenon is not ok please improve or replace ...

Страница 51: ...age testing circuit on control panel AP1 Replace the control panel AP1 Measure the AC voltage between terminal L and N on wiring board XT power supply Voltage within 210VAC 250VAC Shut down the power and repair the power supply to restore the range 210VAC 250VAC power on and restart the unit If the fault is eliminated Shut down the power and wait 20 minutes or use DC voltmeter to measure the volta...

Страница 52: ...e Replace the outdoor control board AP1 Indoor unit air return is poor or fan speed is too low 1 Power supply voltage is lower than AC175V 2 Wire terminal 4V loosen or wire break 3 4V damaged replace 4V Whole unit break for 20mins and discharge to check the outdoor control board AP1 s IPM module coolant whether is short the radiator is tightened If above phenomenon is not ok please improve or repl...

Страница 53: ...Then Restart the unit Remove the wires on the two ends of capacitor C2 Then use capacitance meter to measure the capacitor C2 Verify as per the Parameters Sheet Stop the unit and disconnect the power supply Wait 20 minutes or use DC voltmeter to measure the voltage between the two ends of capacitor C2 until the voltage is lower than 20V If capacitor C2 is failed Replace the capacitor C2 Then energ...

Страница 54: ...r than 53 20 minutes after the complete unit is powered off Is heat dissipation of the indoor unit and outdoor unit abnormal Normal protection please operate it after the outdoor ambient temperature is normalized Improve the heat dissipation environment of the unit Does the outdoor fan work normally 1 Check if the fan terminal OFAN is connected correctly 2 Resistance between any two terminals is m...

Страница 55: ...for outdoor unit control board Power on the unit Is stop time of the compressor longer than 3 minutes Restart it up after 3 minutes Does startup fail Are the wires for the compressor connected correctly Is connection sequence right Connect the wires as per the connection diagram Replace the control panel AP1 If the fault is eliminated Replace the compressor End Troubleshooting ...

Страница 56: ...ction sequence right Is the connection made in clockwise direction Connect the wires correctly Replace the control panel AP1 If the fault is eliminated Replace the compressor End Out of step occurs in operation Is the outdoor fan working normally Is the outdoor unit blocked by foreign objects Replace the control panel AP1 If the fault is eliminated Replace the compressor End Check if the fan termi...

Страница 57: ...ete unit is powered off Is the terminal FA for the PMV connected correctly Connect the wires correctly Resistances between the first four pins close to the terminal hole and the fifth pin are almost the same less than 100 ohm Replace the PMV If the fault is eliminated If the fault is eliminated Replace the control panel AP1 Coolant leakage refilling the coolant End Troubleshooting unit control boa...

Страница 58: ...t circuit Replace it as per the wiring diagram and reconnect the wires If the fault is eliminated Remove the PFC capacitor and measure resistance between the two terminals Is the resistance around zero The capacitor is short circuited and the capacitor should be replaced Restart the unit If the fault is eliminated Disconnect the terminals for the reactor and measure the resistance between the two ...

Страница 59: ...operate normally before the failure occurs The AP1 voltage detection circuit is at fault Check wiring inside of the indoor and outdoor units Are wires broken Check the communication circuit of the outdoor unit If the fault is eliminated The communication circuit is abnormal Replace the main board of the indoor unit End If the fault is eliminated Replace the main board AP1 of the outdoor unit If th...

Страница 60: ...easure voltage at the Test 15 position as shown in the diagram with a voltmeter Value jumping Measure voltage at the Test 11 position as shown in the diagram with a voltmeter Value jumping Measure voltage at the Test 12 position as shown in the diagram with a voltmeter Value jumping The communication circuit of the outdoor unit is normal End Fault with outdoor unit Troubleshooting ...

Страница 61: ...69 ć N ć N ć N ć N Temp Resistance Temp Temp Resistance Temp Resistance Resistance Appendix 1 form for indoor outdoor unit s ambient sensor numerical value of resistance Troubleshooting ...

Страница 62: ...70 ć N ć N ć N ć N Temp Resistance Temp Temp Temp Resistance Resistance Resistance Appendix 2 form for indoor outdoor unit s tube temperature sensor numerical value of resistance Troubleshooting ...

Страница 63: ...71 ć N ć N ć N ć N Temp Resistance Temp Temp Temp Resistance Resistance Resistance Appendix 3 form for indoor outdoor unit s air exhaust temperature sensor numerical value of resistance Troubleshooting ...

Страница 64: ...rd along the groove and then remove the panel Twist off the screws on the wiring cover plate separate the terminals and the remove the wiring cover plate 2 Disassemble filter Push the filter inward and pull it out upward then you can remove the filter 3 Disassemble guide louver Bend the guide louver by hand to loosen the clasp on air guide louver and then remove the guide louver ...

Страница 65: ...the front case 5 Disassemble electric box cover Twist off the screws on electric box cover take out the temperature sensor and then remove the electric box 6 Disassemble electric box Disassemble the ground wire on evaporator pull out the connecting wire of indoor motor on electric box twist off the screws used for fixing the electric box with screwdriver and then remove the electric box ...

Страница 66: ...r fixing the pipe pressing plate and then remove the pipe pressing plate Twist off the screws at the right and left sides of evaporator take out the evaporator by hand and let the clasps of end plate on evaporator come out of the groove Remove the evaporator carefully and please protect the connecting pipes ...

Страница 67: ...75 screw 8 Disassemble motor Twist off the screws used for fixing the press plate of generator and then remove the motor ...

Страница 68: ...ews around the top cover pull it upward and then remove the top cover 2 Disassemble grille and right side plate Twist off the screw around the grille and then remove the grille Twist off the screws between right side plate and end plate of condenser valve support pull it upward and then remove the right side plate 3 Disassemble electric box Disassemble the screws on electric box cover pull out the...

Страница 69: ... Disassemble motor and motor support Twist off the clamping screws take out the motor twist off the screws used for fixing the motor support pull it upward and then remove the motor support 6 Disassemble electronic expansion valve and four way valve Unsolder the spot weld between electronic expansion valve and other connection and then remove the electronic expansion valve Unsolder the spot weld b...

Страница 70: ... used for fixing the gas valve and liquid valve unsolder the spot weld between gas valve and return air pipe and then remove the gas valve and liquid valve 8 Disassemble compressor Loosen the nuts of compressor unsolder weld spot shown on suction pipe and discharge pipe of compressor move the pipeline and then take out the compressor ...

Страница 71: ... cover pull it upward and then remove the top cover Twist off the screws around the front side panel and then remove the front side plate 2 Disassemble grille and right side plate Twist off the screws around the grille and then remove the grille Twist off the screws between right side plate and end plate of condenser valve support pull it upward and then remove the right side plate 3 Disassemble e...

Страница 72: ...sher plain washer and then remove the axial flow blade forcibly 5 Disassemble motor and motor support Twist off the fixing screws and then take out the motor Twist oft the screws used for fixing the motor support pull it upward and then remove the motor support 6 Disassemble four way valve Unsolder the spot weld between four way valve and other pipes and then remove the four way valve sub assy ...

Страница 73: ...s used for the gas valve and liquid valve unsolder the spot weld between gas valve and return air pipe and then remove the gas valve and liquid valve 8 Disassemble compressor Loosen the nuts of compressor unsolder the weld spot shown on suction pipe and discharge pipe of compressor Remove the pipeline and then remove the compressor ...

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