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Remark:

Use a multimeter to test the DC
voltage between L2 port and S port of
outdoor unit. The red pin of
multimeter connects with L2 port
while the black pin is for S port.

When AC is normal running, the
voltage will move alternately between
-50V to 50V.

If the outdoor unit has malfunction,
the voltage will move alternately with
positive value.

While if the indoor unit has
malfunction, the voltage will be a
certain value.

Remark:

Use a multimeter to test the
resistance of the reactor which does
not connect with capacitor.
The normal value should be around
zero ohm. Otherwise, the reactor
must have malfunction and need to
be replaced.

41

Innovair Corporation

Nexxos Inverter

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Содержание NIN1225C2V31

Страница 1: ...echnician familiar with safety procedures and equipped with the proper tools and test instruments Installation or repairs made by unqualified persons can result in hazards to you and others Failure to carefully read and follow all instructions in this manual can result in equipment malfunction property damage personal injury and or death This service is only for service engineer to use ...

Страница 2: ...he elevation 20 6 4 Installation for the first time 22 6 5 Adding the refrigerant after running the system for many years 23 6 6 Re installation while the indoor unit need to be repaired 23 6 7 Re installation while the outdoor unit need to be repaired 24 7 Operation Characteristics 26 8 Electronic Function 27 8 1 Abbreviation 27 8 2 Display function 27 8 3 Main Protection 28 8 4 Operation Modes a...

Страница 3: ...ir conditioner could fall with it causing property damage product failure and personal injury Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock Do not place anything on the power cable There is risk of f...

Страница 4: ... or inefficient operation Operational Do not expose the skin directly to cool air for long time Do not sit in the draft Do not use the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property Do not block the inlet or outlet of air flow Use a soft cloth to clean Do not use ...

Страница 5: ...ions 2 1 Model Names of Indoor Outdoor units Capacity Indoor units Outdoor units 12k NIN516C2V31 ID NIN516C2V31 OD 18k NIN522C2V31 ID NIN522C2V31 OD 24k NIN1225C2V31 ID NIN1225C2V31 OD 3 Innovair Corporation Nexxos Inverter ...

Страница 6: ...2 2 Part names of Indoor Outdoor units 4 Innovair Corporation Nexxos Inverter ...

Страница 7: ...3 Dimension 3 1 Indoor Unit W D H Model W D H NIN516C2V31 ID 920mm 36 22in 223mm 8 78in 292mm 10 5in NIN522C2V31 ID 998mm 39 29in 240mm 9 45in 322mm 12 68in 5 Innovair Corporation Nexxos Inverter ...

Страница 8: ...stallation hole NIN516C2V31 ID 185mm 7 28in 150mm 5 91in 45mm 1 77in Φ65mm 2 56in Model R L H Dimension of installation hole NIN522C2V31 ID 120mm 4 72in 100mm 3 94in 45mm 1 77in Φ65mm 2 56in 6 Innovair Corporation Nexxos Inverter ...

Страница 9: ...Model W D H NIN1225C2V31 ID 1450mm 57 1in 265mm 10 43in 340mm 10 39in 7 Innovair Corporation Nexxos Inverter ...

Страница 10: ...eference The appearance of your units may be different Model W D H W1 A B NIN516C2V31 OD 760mm 29 9in 285mm 11 2in 590mm 23 2in 823mm 32 4in 530mm 20 9in 290mm 11 4in NIN522C2V31 OD 845mm 33 3in 320mm 12 6in 700mm 27 6in 908mm 35 7in 560mm 22 0in 335mm 13 2in NIN1225C2V31 OD 900mm 35 43in 315mm 12 40in 860mm 33 86in 980mm 38 58in 590mm 23 23in 333mm 13 11in 8 Innovair Corporation Nexxos Inverter ...

Страница 11: ...R LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR CAPILIARY TUBE T2 Evaporator temp sensor T1 Room temp sensor ACCUMULATOR T4 Ambient temp sensor T5 Discharge temp sensor T3 Condenser temp sensor 9 Innovair Corporation Nexxos Inverter ...

Страница 12: ... EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER Compressor 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor T1 Room temp sensor T3 Condenser temp sensor Accumulator T5 Discharge temp sensor T4 Ambient temp sensor INDOOR OUTDOOR 10 Innovair Corporation Nexxos Inverter ...

Страница 13: ...5 Wiring Diagram 5 1 Indoor Unit NIN516C2V31 ID 11 Innovair Corporation Nexxos Inverter ...

Страница 14: ...NIN522C2V31 ID 12 Innovair Corporation Nexxos Inverter ...

Страница 15: ...NIN1225C2V31 ID 13 Innovair Corporation Nexxos Inverter ...

Страница 16: ...5 2 Outdoor Unit NIN516C2V31 OD 14 Innovair Corporation Nexxos Inverter ...

Страница 17: ...NIN522C2V31 OD 15 Innovair Corporation Nexxos Inverter ...

Страница 18: ...NIN1225C2V31 OD 16 Innovair Corporation Nexxos Inverter ...

Страница 19: ...For NIN516C2V31 OD 17 Innovair Corporation Nexxos Inverter ...

Страница 20: ...For NIN522C2V31 OD 18 Innovair Corporation Nexxos Inverter ...

Страница 21: ...For NIN1225C2V31 OD 19 Innovair Corporation Nexxos Inverter ...

Страница 22: ...selected according to the following specifications sheet Appliance Amps AWG Wire Size 10 18 13 16 18 14 25 12 30 10 The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which located on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 6 3 Pipe length and the elevation Models Pipe siz...

Страница 23: ...516C2V31 ID NIN516C2V31 OD 7 5m 24 6ft 10m 32 8ft 25m 82 0ft 15g m 0 16oz ft NIN522C2V31 ID NIN522C2V31 OD 7 5m 24 6ft 20m 65 6ft 30m 98 4ft 30g m 0 32oz ft NIN1225C2V31 ID NIN1225C2V31 OD 7 5m 24 6ft 25m 82 0ft 50m 164ft 30g m 0 32oz ft 21 Innovair Corporation Nexxos Inverter ...

Страница 24: ...to evacuate 6 Make evacuation for 30 minutes and check whether the compound meter indicates 0 1Mpa 14 5Psi If the meter does not indicate 0 1Mpa 14 5Psi after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa 14 5Psi after pumping 50 minutes please check if there are some leakage points Fully close the handle Lo valve of the manifold valve and stop the ope...

Страница 25: ...ck valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low ...

Страница 26: ...lve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3Mpa 43 5Psi to 0 5 Mpa 72 5Psi 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open posit...

Страница 27: ...e set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g each time operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 5 When the electronic scale displays the proper weight discon...

Страница 28: ...98 99 100 102 104 106 108 109 44 45 46 47 48 49 50 111 113 115 117 118 120 122 CAUTION 1 If the air conditioner is used beyond the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If the air conditioner operates beyond this figure the surface of the air conditioner may attract co...

Страница 29: ...Clean Air feature is activated DEFROST indication lamp For cooling heating models only Lights up when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating operation OPERATION indication lamp This lamp illuminates when the air conditioner is in operation TIMER indication lamp Lights up during Timer operation Temperature indicator Displays ...

Страница 30: ...trolled by anti cold wind function 8 3 7 Compressor preheating functions Preheating permitting condition If T4 outdoor ambient temperature 3 and the machine connects to power supply newly or if T4 3 and compressor has stopped for over 3 hours the compressor heating cable will work Preheating mode A weak current flow through the coil of compressor from the wiring terminal of the compressor then the...

Страница 31: ... 40 38 31 5 29 5 22 20 Fmax F4 Fmax F7 Fmax F8 Fmax F6 Fmax F3 For other models The maximum operation frequency of compressor after starting submits to following rule 45 43 40 38 30 28 22 20 Fmax F4 Fmax F7 Fmax F8 Fmax F6 Fmax F3 Fmax The maximum operation frequency of compressor F1 F8 The detailed value of the compressor operation frequency If users switch on AC by remote controller the compress...

Страница 32: ...ecrease Decrease the running frequency to the lower level Hold Keep the current frequency Resume No limitation for frequency Note When AC is in hold zone for 3 minutes the compressor frequency will rise to the higher level frequency will increase twice at most 8 4 2 2 Outdoor fan running rules For NIN516C2V31 NIN1225C2V31 models 28 26 E C 25 23 B 22 20 19 17 D A Cooling For NIN522C2V31 T4 28 ã C 8...

Страница 33: ...conds the machine will turn into forced cooling mode In forced auto forced cooling or any other operation mode pressing touch button will turn off the machine 8 4 4 2 In forced operation mode all general protections and remote control are available 8 4 4 3 Operation rules Forced cooling mode The compressor runs at F2 frequency and indoor fan runs as breeze After running for 30 minutes the machine ...

Страница 34: ...or will have 1 minute delay when power on Other conditions the compressor will have 3 minutes delay when restarts 8 4 8Follow me 1 If the indoor PCB receives the signal which results from pressing the FOLLOW ME button on remote controller the buzzer will emit a sound and this indicates the follow me function is initiated But when the indoor PCB receives signal which sent from remote controller eve...

Страница 35: ...orize the maximum angle of the louver During operation if the power fails or the end user shuts down the unit in the turbo mode the louver will restore to the default angle 8 4 12 Silence operation optional Press the silence button on remote controller to initiate SILENCE function When the Silence function is activated the compressor running frequency will keep lower than F2 and the indoor unit wi...

Страница 36: ...capacitor Electrolytic Capacitors HIGH VOLTAGE CAUTION For other models please connect discharge resistance approx 100Ω 40W or soldering iron plug between terminals of the electrolytic capacitor on the contrary side of the outdoor PCB Note The picture above is only for reference The plug of your side may be different 34 Innovair Corporation Nexxos Inverter ...

Страница 37: ...unit temperature sensor open circuit or short circuit Outdoor unit EEPROM malfunction E6 Indoor unit temperature sensor open circuit or short circuit E7 Outdoor unit fan speed has been out of control for NIN1225C2V31 ID P0 IPM malfunction or IGBT over strong current protection P1 Over voltage or over low voltage protection P2 High temperature protection of compressor top diagnosis and solution P4 ...

Страница 38: ... unit fan speed has been out of control F1 Outdoor ambient temperature sensor open circuit or short circuit F2 Condenser coil temperature sensor open circuit or short circuit F3 Outdoor unit discharge temperature sensor open circuit or short circuit F4 Outdoor unit EEPROM parameter error F5 Outdoor unit fan speed has been out of control P0 IPM malfunction or IGBT over strong current protection P1 ...

Страница 39: ...9 2 Outdoor unit error display For NIN516C2V31 OD 37 Innovair Corporation Nexxos Inverter ...

Страница 40: ... R67 R66 R65 R64 R63 R62 R61 R60 R59 R58 R54 R53 R52 R51 R50 R49 R48 R47 R45 R44 R42 R41 R40 R39 R38 R37 R36 R35 R34 R33 R32 R31 R30 R29 R28 R27 R26 R25 R24 R23 R22 R21 R20 R19 R18 R17 R16 R15 R14 R13 R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 Q4 Q3 Q2 PTC1 P 1 GND IC16 IC14 IC13 IC12 IC11 IC10 IC8 IC7 IC5 IC4 IC3 IC2 FUSE2 T30A 250VAC E13 E12 E10 E9 E6 E4 E2 E1 D19 D18 D17 D16 D14 D13 D12 D11 D10 D9 D8 D...

Страница 41: ...therwise check whether the EEPROM chip plugged in main PCB well Yes No Yes Correct the connection Replace the main PCB Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage For the location of EEPROM chip please refer to the below photos Indoor PCB Outdoor PCB Not...

Страница 42: ...off then turn on the unit 5 seconds later reconnect the power wire Is the error still displaying after several minutes No Replace the outdoor main PCB Power on Is the error extinguished Check all the wiring with indoor units Is the wiring to the indoor main PCB connected correctly Replace the indoor main PCB Yes Replace the outdoor main PCB No Check all the wiring with outdoor u n i t s Is the wir...

Страница 43: ...etween 50V to 50V If the outdoor unit has malfunction the voltage will move alternately with positive value While if the indoor unit has malfunction the voltage will be a certain value Remark Use a multimeter to test the resistance of the reactor which does not connect with capacitor The normal value should be around zero ohm Otherwise the reactor must have malfunction and need to be replaced 41 I...

Страница 44: ...dback for 4 minutes or the zero crossing signal time interval is abnormal Supposed causes Connection mistake PCB faulty Trouble shooting Check if the connections and power supply is normal Correct the connections Turn on the unit when the power supply is good No Yes Indoor main PCB is defective Replace indoor main PCB 42 Innovair Corporation Nexxos Inverter ...

Страница 45: ...error code Shut off the power supply rotate the fan by hand Does it rotate properly The unit operates normally Find out the cause and have it solved For example check whether the fan is blocked or the bearing is broken Check the wires of fan motor Are all the connections good No Yes No Correct the connections No Yes Check whether the main PCB is normal through index 2 Yes Yes Check whether the fan...

Страница 46: ...Motor control chip is in fan motor Power on and when the unit is in standby measure the voltage of pin1 pin3 pin4 pin3 in fan motor connector If the value of the voltage is not in the range showing in below table the PCB must has problems and need to be replaced DC motor voltage input and output NO Color Signal Voltage 1 Red Vs Vm 280V 380V 2 3 Black GND 0V 4 White Vcc 14 17 5V 5 Yellow Vsp 0 5 6V...

Страница 47: ... the failure Supposed causes Wiring mistake Sensor faulty Trouble shooting Check the connections between temperature sensor and main PCB Are the connections good Correct the connections No Yes Yes Replace indoor or outdoor main PCB Replace the sensor and check if the problem happen again Check the resistance value of the sensor via table1 p64 and table 2 p65 is it normal No 45 Innovair Corporation...

Страница 48: ...and if the wires and connectors are broken Correct the connection or replace the wires and connectors Yes No IPM continuity check Check if the IPM terminal resistance values are uniform Refer to page 64 Replace the IPM board or replace the main PCB if the IPM board and main PCB are integrated together No Check if the outdoor fan runs properly or the outdoor unit ventilation is good Yes No please r...

Страница 49: ...P U P V 47 Innovair Corporation Nexxos Inverter ...

Страница 50: ...P W P N 48 Innovair Corporation Nexxos Inverter ...

Страница 51: ...hanger of indoor and outdoor units Yes No Yes Yes Turn off the power supply and turn it on 10 minutes later Check if the unit can start normally No Check if the refrigerant charge volume is normal Recharge the correct refrigerant volume Refrigerant system is blocked such as capillary or welded point of pipes Yes Check if all the connection especially the connection of OLP Over Load Protector senso...

Страница 52: ...unit ventilation is good Yes No For 3D inverter models refer to the solution of fan speed has been out of control malfunction Find out the cause and have it solved For other models please refer to the below remark check whether the resistance of the fan motor is normal If not replace the fan motor Yes Check if the compressor resistance values are uniform Refer to page 63 No Replace the compressor ...

Страница 53: ... resistance value with a tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 sensor Measure the resistance value of each winding by using the multi meter 51 Innovair Corporation Nexxos Inverter ...

Страница 54: ...8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1 34 33 3269 41 106 4 96392 81 178 1 13604 121 250 0 35042 2 36 31 5635 42 108 4 76253 82 180 1 09958 122 252 0 3413 3 37 29 9058 43 109 4 5705 83 181 1 06448 123 253 0 33246 4 39 28 3459 44 111 4 38736 84 183 1 03069 124 255 0 3239...

Страница 55: ...76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7 086 119 246 2 174 0 32 180 9 40 104 29 15 80 176 6 859 120 248 2 117 1 34 171 9 41 106 28 81 178 6 641 121 250 2 061 2 36 163 3 42 108 26 9 82 180 6 43 122 252 2 007 3 37 155 2 43 109 25 86 83 181 6 228 123 253 1 955 4 39 147 6 44 111 24 85...

Страница 56: ...4 25 26 27 50 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 84 86 86 90 92 94 96 98 98 99 100 102 104 106 108 109 44 45 46 47 48 49 50 111 113 115 117 118 120 122 54 Innovair Corporation Nexxos Inverter ...

Страница 57: ...ach winding by using the tester Position Resistance Value DA108X1C 20FZ3 ASN108D22UEZ DA130M1C 31FZ DA150S1C 20FZ DA250S2C 30MT Blue Red 0 71Ω 20 68 1 57Ω 20 68 1 77Ω 20 68 0 95Ω 20 68 0 55Ω 20 68 Blue Black Red Blue 55 Innovair Corporation Nexxos Inverter ...

Страница 58: ...al MΩ P N U N U V V W W Red 4 Indoor AC Fan Motor Measure the resistance value of each winding by using the tester Position Resistance Value RPG20B RPG28H RPG28A YDK65 4B Black Red 381Ω 8 20 68 Brand Weiling 342Ω 8 20 68 Brand Broad Ocean 183 6Ω 8 20 68 Brand Weiling 70 3Ω 8 20 68 Brand Broad Ocean 81Ω 8 20 68 Brand Weiling White Black 267Ω 8 20 68 Brand Weiling 253Ω 8 20 68 Brand Broad Ocean 206Ω...

Страница 59: ... 67 9 3 8 9 9 1 9 6 11 2 IDT ODT 75 23 89 85 29 44 95 35 105 40 56 115 46 11 PSI 70 59 119 113 117 125 147 PSI 75 63 124 120 126 132 155 PSI 80 67 135 129 132 140 162 IDT ODT 75 23 89 85 29 44 95 35 105 40 56 115 46 11 MPA 70 59 0 82 0 78 0 81 0 86 1 01 MPA 75 63 0 86 0 83 0 87 0 91 1 07 MPA 80 67 0 93 0 89 0 91 0 96 1 12 57 Innovair Corporation Nexxos Inverter ...

Страница 60: ...1 Pull the below side of the panel and release the clips Remove the filter and horizontal louver 2 Remove the fixing screw and open the cover 3 Lift the panel and release the connector of display ass y Then remove the front panel 4 Remove the five screws and release the panel frame ass y Overview Connector for display ass y Clip One screw fixing the cover Clip 5 screws 58 Innovair Corporation Nexx...

Страница 61: ...crew and open the cover of electronic control box 3 Pull out the connectors of swing motor fan motor room temp sensor and coil temp sensor 4 Remove the fixing screw and then remove the electronic control box and air outlet ass y Screw for cover Fan motor connector Swing motor connector Grounding screws Room temp sensor Coil temp sensor Temp sensor connectors One screw 59 Innovair Corporation Nexxo...

Страница 62: ...edure 1 and procedure 2 remove the pipe holder at the rear side of the unit 2 Remove the three screws on the evaporator at the base bearing side 3 Remove two screws on the evaporator at the fixed plates and then lift the evaporator ass y Screw of pipe holder 3 screws 2 screws 60 Innovair Corporation Nexxos Inverter ...

Страница 63: ...1 After remove the evaporator ass y following procedure 1 procedure 2 and procedure 3 remove the four screws fixing the cover 2 Remove the screw fixing the motor and then pull out the motor Four screws 1 Screw 61 Innovair Corporation Nexxos Inverter ...

Страница 64: ...reaker 2 Refer to the right side photos find out the fixing screws of the panels 3 Remove the screws of top panel and remove the top panel Screws of water connector on right side plate Screws of front panel Screws of top panel Screws of front panel Screw of top panel Screws of big handle on right side plate Screw of right side plate 62 Innovair Corporation Nexxos Inverter ...

Страница 65: ...screws of motor holder and then remove the front panel 5 Remove the screws of the right side plate and remove the right side plate Screw of the top panel Screw of top panel Screws of right rear plate Screws of front panel 63 Innovair Corporation Nexxos Inverter ...

Страница 66: ...owing procedure 1 remove the hex nut fixing the fan and then remove the fan 2 Unfix the hooks and then open the electronic control box cover Fan ass y Electronic control box Reactor Compressor and liquid gas separator Nut fixing the fan 64 Innovair Corporation Nexxos Inverter ...

Страница 67: ... remove the fan motor Fan motor connector 3 Electrical parts How to remove the electrical parts 1 After finish work of item 1 and item 2 remove the three connectors for compressor crankcase heater and capacitor Capacitor connector Four screws Compressor connector Compressor crankcase heater 65 Innovair Corporation Nexxos Inverter ...

Страница 68: ... sensor condenser coil temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor T5 4 Remove the ground wires 5 Remove the power supply wires L1 L2 S 6 Then remove the electronic control box Two black wires of four way valve To T3 T4 T5 To compressor top sensor 66 Innovair Corporation Nexxos Inverter ...

Страница 69: ...he picture of four way valve may be different from the one on your side 5 Compressor How to remove the compressor 1 After perform work of item1 2 3 2 Remove the discharge pipe and suction pipe with a burner 3 Remove the hex nuts and washers fixing the compressor on bottom plate 4 Lift the compressor from the base pan assembly Discharge pipe and suction pipe Four way valve Nuts of compressor Coil o...

Страница 70: ...r breaker 2 Refer to the right side photos find out the fixing screws of the panels 3 Remove the screws of top panel and remove the top panel Screws of water connector on right side plate Screws of front panel Screws of top panel Screws of front panel Screw of top panel Screws of big handle on right side plate 68 Innovair Corporation Nexxos Inverter ...

Страница 71: ...screws of motor holder and then remove the front panel 5 Remove the screws of the right side plate and remove the right side plate Screw of the top panel Screw of top panel Screws of right rear plate Screws of front panel 69 Innovair Corporation Nexxos Inverter ...

Страница 72: ...re 1 remove the hex nut fixing the fan and then remove the fan 2 Remove the one fixing screw Unfix the hooks and then open the electronic control box cover Compressor and liquid gas separator Electronic control box Nut fixing the fan Two reactors Fan 70 Innovair Corporation Nexxos Inverter ...

Страница 73: ... motor 5 Then remove the fan motor 3 Electrical parts How to remove the electrical parts 1 After finish work of item 1 and item 2 remove the two connectors for the compressor and the compressor crankcase heater Four screws Fan motor connector Four way valve connector 71 Innovair Corporation Nexxos Inverter ...

Страница 74: ...ors 3 Remove the connector of reactor 4 Remove the connector of electronic expansion valve 5 Remove the grounding screw 6 Remove the power supply wires L1 L2 S 7 Then remove the electronic control box 72 Innovair Corporation Nexxos Inverter ...

Страница 75: ...e picture of four way valve may be different from the one on your side 5 Compressor How to remove the compressor 1 After perform work of item1 2 3 2 Remove the discharge pipe and suction pipe with a burner 3 Remove the hex nuts and washers fixing the compressor on bottom plate 4 Lift the compressor from the base pan assembly Discharge pipe and suction pipe Four way valve Nuts of compressor Coil of...

Страница 76: ...aker 2 Refer to the right side photos find out the fixing screws of the panels 3 Remove the screws of top panel and remove the top panel Screws of water connector on right side plate Screws of front panel Screws of top panel Screws of front panel Screws of big handle on right side plate Screws of the right side panel 74 Innovair Corporation Nexxos Inverter ...

Страница 77: ...screws of motor holder and then remove the front panel 5 Remove the screws of the right side plate and remove the right side plate Screw of the top panel Screw of top panel Screws of right rear plate Screws of front panel 75 Innovair Corporation Nexxos Inverter ...

Страница 78: ...76 Innovair Corporation Nexxos Inverter ...

Страница 79: ...1 remove the hex nut fixing the fan and then remove the fan 2 Unfix the hooks and then open the electronic control box cover LAK board optional Compressor and liquid gas separator Electronic control box Nut fixing the fan Accumulator Three reactors Fan 77 Innovair Corporation Nexxos Inverter ...

Страница 80: ...ctrical parts How to remove the electrical parts 1 After finish work of item 1 and item 2 remove the three connectors for the compressor and the reactors and the compressor crankcase heater 2 Pull out the two blue wires connected with the four way valve Four screws Two blue wires of four way valve Fan motor connector 78 Innovair Corporation Nexxos Inverter ...

Страница 81: ...l temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor T5 4 Remove the grounding screw 5 Remove the power supply wires L1 L2 S 6 Then remove the electronic control box Grounding screw Four temp sensor connectors 79 Innovair Corporation Nexxos Inverter ...

Страница 82: ...e picture of four way valve may be different from the one on your side 5 Compressor How to remove the compressor 1 After perform work of item1 2 3 2 Remove the discharge pipe and suction pipe with a burner 3 Remove the hex nuts and washers fixing the compressor on bottom plate 4 Lift the compressor from the base pan assembly Discharge pipe and suction pipe Four way valve Nuts of compressor Coil of...

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