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R32

Refrigerant

Air Conditioners

Heat Pump “Wall” Type DC Inverter Models
1 Phase, 220-240V, 50Hz Power Supply

V-Design Series:

HKEU (262, 352) ZAL-B

HCNI (262, 352) ZA

Service Manual

[ Release 1.0 ]

(optional)

Содержание V-Design HCNI 262 ZA

Страница 1: ...R32 Refrigerant Air Conditioners Heat Pump Wall Type DC Inverter Models 1 Phase 220 240V 50Hz Power Supply V Design Series HKEU 262 352 ZAL B HCNI 262 352 ZA Service Manual Release 1 0 optional ...

Страница 2: ...ARGE 3 3 3 3 RE INSTALLATION 3 4 4 INDOOR UNITS DISASSEMBLY 4 1 4 1 INDOOR UNITS DIMENSIONS 4 1 4 2 DISASSEMBLING THE INDOOR UNIT 4 2 5 OUTDOOR UNITS DISASSEMBLY 5 1 5 1 OUTDOOR UNITS DIMENSIONS 5 1 5 2 DISASSEMBLING THE OUTDOOR UNIT 5 2 6 TROUBLESHOOTING 6 1 6 1 SAFETY CAUTION 6 1 6 2 GENERAL TROUBLESHOOTING 6 2 6 3 COMPLAIN RECORD FORM 6 3 6 4 INFORMATION INQUIRY 6 5 6 5 ERROR DIAGNOSIS AND TROU...

Страница 3: ...nly a qualified electrician should perform electrical work For more information contact your dealer re seller or an authorized Service Center 1 3 Operation and Maintenance While unpacking be careful of sharp edges around the unit as well as the edges of the fins on the conden ser and evaporator Do not use defective or under rated circuit breakers Ensure the unit is properly grounded and that a de ...

Страница 4: ...le hazards or ignition risks NO SMOKING signs shall be displayed 2 7 Ventilated area Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work A degree of ventilation shall continue during the period that the work is carried out The ventilation should safely disperse any released refrigerant and preferably expel it externally...

Страница 5: ...ed fla me shall not be used 2 14 Leak detection methods The following leak detection methods are deemed ac ceptable for systems containing flammable refrigerants Electronic leak detectors shall be used to detect flam mable refrigerants but the sensitivity may not be ade quate or may need re calibration Detection equip ment shall be calibrated in a refrigerant free area Ensure that the detector its...

Страница 6: ...the equipment are removed from site promptly and all isolation valves on the equipment are closed off Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked 2 18 Labelling Equipment shall be labelled stating that it has been de commissioned and emptied of refrigerant The label shall be dated and signed Ensure that there are labels on the...

Страница 7: ...ing operations High density filter These removed dust and pollen by up to 80 improving room air quality The V DESIGN colour display allows for at a glance understanding of which operating mode is activated on the unit blue light for cooling orange light for heating Light effects Storing air flow louvre position When the V Design is switched back on this function allows the horizontal flap to maint...

Страница 8: ... 72 2 91 Seasonalenergyefficiencyclass 626 20111 A A Seasonalenergyefficiencyindex SEER2 6 7 6 1 Annualenergyconsumption kWh a 141 206 Theoreticalload Pdesignc kW 2 7 3 5 Ratedcapacity T 7 C Heating kW 2 93 0 85 3 72 3 81 1 23 4 36 Ratedabsorbedpower T 7 C kW 0 77 0 13 1 32 1 34 0 11 1 34 Ratedenergyperformancecoefficient COP3 3 80 2 84 Energyefficiencyclass averageseason 626 20111 A A Seasonalene...

Страница 9: ...il return Oil traps in the rising gas pipe can prevent this If indoor unit is installed higher than outdoor unit oil trap should be set every 10m of vertical distance If the outdoor unit is installed higher than the indoor unit proper oil should return to the compressor along with the suction of refrigerant to keep lubrication of compressor If the suction flow velocity drops below 7 62m s oil won ...

Страница 10: ...t 2 Components inside the dotted lines rectangles may be optional 16022000030632 Yellow Green W 1 L 2 N S Indoor Unit to Outdoor Unit White Red Blue or Black Yellow N_IN CN31 L_IN L_OUT CN12 CN24 CN33 CN18 CN26 Display Board Optional Plasma Optional 4 8 2 P_1 5 5 5 5 3 M Indoor Motor Panel Motor LED Board CN22 Vertical Motor Optional CN19 Louver Motor CN27 CN15 Pipe Temperature Sensor ION Optional...

Страница 11: ...ON CAP PLASMA L N HEATER T1 T2 Yellow Green Conductor Positive and Negative Ion Generator Capacitor Electronic Dust Collector LIVE NEUTRAL The Electric Heating Belt of Indoor Unit Indoor Room Temperature Sensor Coil Temperature Sensor of Indoor Heat Exchanger Indoor Units Abbreviations ...

Страница 12: ...ndoor unit and outdoor unit rated current Reactor 1005AL CN9 CN32 Optional Blue or White Blue or White Blue Red Black Blue Red Black Compressor U V W CN21 Optional Discharge Temp Sensor Condenser Temp Sensor Outdoor air Temp Sensor DC Fan Optional 3 CN7 CN31 5 6 Electronic Expansion Valve Optional Main Board Yellow Green Yellow Green CN 1A CN3 CN1 CN2 CN16 Blue Yellow Green Yellow or Black Blue or...

Страница 13: ... Assembly 4 WAY VALVE Alternating Current FAN Direct Currente FAN AC Current Detector Compressor Coil Temperature of Condenser Outdoor Ambient Temperature Compressor Suction Temperature Compressor Discharge Temperature Outdoor Units Abbreviations EEV L PRO H PRO Electronic Expansion Valve Low Pressure Switch High Pressure Switch ...

Страница 14: ...ntrol available on select units only ECO function available on select units only V shape light area Note Please select the display function according to your purchased product It lights up in different color according to the operation mode In AUTO COOL and DRY mode the light is blue In AUTO HEAT mode the light is orange The light is OFF in Fan mode When room light is turned off the display window ...

Страница 15: ...ror code is displayed on the indoor unit Inverter module protection The inverter module has an automatic shut off mechanism based on the unit s current voltage and temperature If automatic shut off is initiated the corresponding error code is displayed on the indoor unit and the unit ceases operation Indoor fan delayed operation When the unit starts the louver is automatically activated and the in...

Страница 16: ...e 1 or Case 2 is shown in the following function sections from 2 3 4 to 2 3 6 F u n c t i o n s Cooling Mode Heating Mode Heating Mode Auto Mode Outdoor Fan Control Defrosting Mode C a s e s Case 1 Compressor Frequency and T4 Case 2 T4 Case 1 T3 and T4 15 min Case 2 T3 10 min A 2 C B 2 C Models HKEU 262 ZAL B HKEU 352 ZAL B ...

Страница 17: ...e compressor ceases operation when the configured temperature is reached the indoor fan motor operates at the minimum or configured speed The indoor fan is controlled as below T1 Td C M M M Z L L L The auto fan acts as below rules 2 3 4 3 Outdoor Fan Control Case 1 The outdoor unit will be run at different fan speed according to T4 and compressor frequency For different outdoor units the fan speed...

Страница 18: ...ng mode Case 1 The unit enters defrosting mode according to the temperatu re value of T3 and T4 as well as the compressor running time In defrosting mode the compressor continues to run the indoor and outdoor motor will cease operation the defrost light of the indoor unit will turn on and the symbol is displayed Running mode T A Cooling Fan only T B Heating If any one of the following conditions i...

Страница 19: ...after which the unit exits this mode and does not switch off 2 3 10 Auto Restart function The indoor unit has an auto restart module that allows the unit to restart automatically The module automatically stores the current settings not including the swing setting and in the case of a sudden power failure it will restore those setting automatically within 3 minutes after power returns If the unit w...

Страница 20: ...ote the indoor unit will beep This indicates the follow me function is active Once active the remote control will send a signal every 3 minutes with no beeps The unit automatically sets the temperature according to the measurements from the re mote control temperature sensor The unit will only change modes if the information from the remote control makes it necessary not from the unit s temperatur...

Страница 21: ...g the capillary tubing due to ice build up in the refrigerant circuit Corroding the refrigerant system To prevent air and moisture from affecting the air conditioner s performance the indoor unit as well as the pipes between the indoor and outdoor unit must be be leak tested and evacuated Leak test soap water method Use a soft brush to apply soapy water or a neutral chlorine free liquid detergent ...

Страница 22: ... Check whether the compound meter indicates 0 1 MPa 14 5 Psi If the meter does not indicate 0 1 MPa 14 5 Psi after 30 minutes continue evacuating for an additional 20 minutes If the pressure does not achieve 0 1 MPa 14 5 Psi after 50 minutes check for leakage If the pressure successfully reaches 0 1 MPa 14 5 Psi fully close the Handle Lo valve then cease vacuum pump operations b Wait for 5 minutes...

Страница 23: ...alve 6 Place the charging cylinder onto an electronic scale and record the starting weight 7 Fully open the Handle Lo manifold valve 2 way and 3 way valves 8 Operate the air conditioner in cooling mode to charge the system with liquid refrigerant 9 When the electronic scale displays the correct weight refer to the gauge and the pressure of the low side to confirm the value of pressure refers to Ch...

Страница 24: ...the charge hose for 5 seconds and then close it quickly 4 Close the 2 way valve 5 Operate the air conditioner in cooling mode Cease operations when the gauge reaches 0 1 MPa 14 5 Psi 6 Close the 3 way valve so that the gauge rests between 0 3 MPa 43 5 Psi and 0 5 MPa 72 5 Psi 7 Disconnect the charge set and mount the caps of service port and 2 way and 3 way valves 8 Use a torque wrench to tighten ...

Страница 25: ... Check whether the compound meter indicates 0 1 MPa 14 5 Psi If the meter does not indicate 0 1 MPa 14 5 Psi after 30 minutes continue evacuating for an additional 20 minutes If the pressure does not achieve 0 1 MPa 14 5 Psi after 50 minutes check for leakage If the pressure successfully reaches 0 1 MPa 14 5 Psi fully close the Handle Lo valve then cease vacuum pump operations b Wait for 5 minutes...

Страница 26: ...ve Low side on the charge set and turn off the vacuum pump 5 Wait for 5 minutes then check whether the gauge needle moves after turning off the vacuum pump If the gauge needle moves backward check whether there is gas leakage 6 Disconnect the charge hose from the vacuum pump 7 Mount the caps of service port and 2 way and 3 way valves 8 Use a torque wrench to tighten the caps to a torque of 18 N m ...

Страница 27: ...ing mode to charge the system with liquid refrigerant 9 When the electronic scale displays the correct weight refer to the gauge and the pressure of the low side to confirm the value of pressure refers to Chapter 7 Appendix turn off the air conditioner then disconnect the charge hose from the 3 way service port immediately 10 Mount the caps of service port and 2 way and 3 way valves 11 Use a torqu...

Страница 28: ...ype R32 AC 4 Indoor Units Disassembly 4 1 4 INDOOR UNITS DISASSEMBLY 4 1 INDOOR UNITS DIMENSIONS Models W mm D1 mm D2 mm H mm HKEU 262 ZAL B HKEU 352 ZAL B 897 897 182 182 158 158 312 312 Models HKEU 262 352 ZAL B W D1 H D2 ...

Страница 29: ...INV_001 CJ_VP_INV_002 Note This section is for reference only Actual unit appearance may vary Front Panel Panel Button Filter 4 2 1 Front Panel 1 Press down the panel buttons on the both sides of the front panel and lift it see CJ_AB_INV_001 2 Push up the bottom of an air filter and then pull it out downwards see CJ_AB_INV_002 ...

Страница 30: ...INV_004 Note This section is for reference only Actual unit appearance may vary Hook Horizontal Louver 3 Open the horizontal louver and pull the hook outward to open it see CJ_VP_INV_003 4 Bend the horizontal louver lightly by both hands to loosen the hooks then remove the horizontal louver see CJ_VP_INV_004 ...

Страница 31: ...it appearance may vary Panel Side Plate and Indicator Mirror Wire Display Board Wire 5 Pry the cover of electrical equipment by a screw driver and then remove the cover of electronic control box see CJ_VP_INV_005 6 Disconnect the connector for display board see CJ_VP_INV_006 7 Disconnect the connector for the panel side plate and indicator mirror see CJ_VP_INV_006 ...

Страница 32: ...ection is for reference only Actual unit appearance may vary Mandril of Panel 8 Rip the mandril of panel from the side of front panel and take it down see CJ_VP_INV_007 9 Slid the front panel side to side to release each axis see CJ_VP_INV_008 10 Remove the screw on the display board and open the two cover of display board see CJ_VP_INV_009 ...

Страница 33: ...ctual unit appearance may vary Cover Hooks 11 Remove the 4 screws on the panel fra mework see CJ_VP_INV_010 12 Open the cover for screw and then relea se the 1 screw see CJ_VP_INV_010 13 Release the 8 hooks in the back see CJ_VP_INV_011 14 Pull out the panel frame while pushing the hook through a clearance between the panel frame and the heat exchanger see CJ_VP_INV_012 ...

Страница 34: ...rts Procedure Illustration CJ_VP_INV_013 CJ_VP_INV_014 Note This section is for reference only Actual unit appearance may vary Ground Screw 4 2 2 Electrical parts antistatic gloves must be worn 1 Release the 2 screws on the cover of elec tronic control box and remove them see CJ_VP_INV_013 2 Lift up the cover of electronic control box see CJ_VP_INV_014 ...

Страница 35: ... Ground Screws Step motor wire Fan motor wire 3 Remove the fixed screw for electronic con trol box see CJ_VP_INV_015 4 Disconnect the connector for fan motor and the connector for step motor see CJ_VP_INV_015 5 Remove the 2 screws for ground wires and disconnect the T2 sensor wire see CJ_VP_INV_016 6 Pull out the electrical main board along the direction indicated in right image to remove it see C...

Страница 36: ...pe R32 AC 4 Indoor Units Disassembly 4 9 Procedure Illustration CJ_VP_INV_018 Note This section is for reference only Actual unit appearance may vary 7 The connector of each port is indicated in right image see CJ_VP_INV_018 ...

Страница 37: ... Actual unit appearance may vary Pipe Holder 4 2 3 Evaporator Note Remove the front panel and electrical parts refer to 4 2 1 Front panel and 4 2 2 Electrical parts before disassem bling evaporator 1 Disassemble the pipe holder located at the rear of the unit see CJ_VP_INV_019 2 Remove the 3 screws located at the left side of evaporator see CJ_VP_INV_020 ...

Страница 38: ...J_VP_INV_021 CJ_VP_INV_022 Note This section is for reference only Actual unit appearance may vary Screw Hook 3 Remove the screw on the evaporator lo cated at the fixed plate see CJ_VP_INV_021 4 Release the hook on the evaporator see CJ_VP_INV_021 5 Pull out the evaporator see CJ_VP_INV_022 ...

Страница 39: ...y 4 2 4 Fan motor and fan Note Remove the front panel electrical parts and evaporator refer to 4 2 1 Front panel 4 2 2 Electrical parts and 4 2 3 Evaporator before disassembling fan motor and fan 1 Remove the 4 screws on the indoor bottom indicated in right image see CJ_VP_INV_023 2 Separate the fan motor assembly and indoor bottom then take the fan motor assembly out see CJ_VP_INV_024 ...

Страница 40: ...P_INV_026 CJ_VP_INV_027 Note This section is for reference only Actual unit appearance may vary Fan Motor Cover 3 Take apart the fan motor cover see CJ_VP_INV_025 4 Remove the bearing sleeve see CJ_VP_INV_026 5 Remove the fixing screw see CJ_VP_INV_027 6 Pull out the fan motor and fan assembly from the side ...

Страница 41: ...ote This section is for reference only Actual unit appearance may vary Stepping Motor 4 2 5 Step motor 1 Remove the 2 screws then remove the stepping motor see CJ_VP_INV_028 Note Remove the front panel and electrical parts refer to 4 2 1 Front panel 4 2 2 Electrical parts before disassembling step motor ...

Страница 42: ...dure Illustration CJ_VP_INV_029 CJ_VP_INV_030 Note This section is for reference only Actual unit appearance may vary 4 2 6 Drain Hose 1 Rotate the fixed wire clockwise as indica ted in right image see CJ_VP_INV_029 2 Pull up the drain hose to remove it see CJ_VP_INV_030 ...

Страница 43: ...V Design Series Wall Type R32 AC 5 Outdoor Units Disassembly 5 1 5 OUTDOOR UNITS DISASSEMBLY 5 1 OUTDOOR UNITS DIMENSIONS Models HCNI 262 352 ZA Unit mm 90 ...

Страница 44: ... section is for reference only Actual unit appearance may vary Big Handle Top Cover 1 Turn off the air conditioner and the power breaker 2 Remove the screws of the big handle and then remove the big handle 1 screw see CJ_BA30_001 3 Remove the screws of the top cover and then remove the top cover 3 screws One of the screws is located underneath the big handle see CJ_BA30_002 ...

Страница 45: ...A30_003 CJ_BA30_004 Note This section is for reference only Actual unit appearance may vary Front Panel Water Collecting Cover 4 Remove the screws of the front panel and then remove the front panel 7 screws see CJ_BA30_003 5 Remove the screws of water collecting co ver 1 screw see CJ_BA30_004 ...

Страница 46: ...5 CJ_BA30_006 Note This section is for reference only Actual unit appearance may vary Right Panel 6 Remove the screws of the rear netand then remove the rear net 2 screws for so me models see CJ_BA30_005 7 Remove the screws of the right panel and then remove the right panel 6 screws see CJ_BA30_006 ...

Страница 47: ...y Valve 1 Remove the screws of the top cover 2 screws see CJ_ODU_PCB_004 1 2 Unfix the hooks and then open the electro nic control box cover 4 hooks see CJ_ODU_PCB_004 2 3 Disconnect the connector for fan motor from the electronic control board see CJ_ODU_PCB_004 3 4 Remove the connector for the compressor see CJ_ODU_PCB_004 3 5 Pull out the two blue wires connected with the four way valve CJ_ODU_...

Страница 48: ...ly Note Remove the panel plate refer to 5 2 1 Panel Plate before disassembling fan Procedure Illustration CJ_ODU_FAN_001 Note This section is for reference only Actual unit appearance may vary D cut 1 Remove the nut securing the fan with a spanner see CJ_ODU_FAN_001 2 Remove the fan ...

Страница 49: ... Actual unit appearance may vary Note Remove the panel plate and the connection of fan motor on PCB refer to 5 2 1 Panel Plate and 5 2 2 Electrical parts before disassembling fan motor Procedure Illustration CJ_ODU_MOTOR_001 3 Remove the fixing screws of the fan motor 4 screws see CJ_ODU_MOTOR_001 4 Remove the fan motor ...

Страница 50: ...ove the panel plate refer to 5 2 1 Panel Plate before disassembling sound blanket Note This section is for reference only Actual unit appearance may vary Procedure Illustration CJ_ODU_BLANKET_001 Sound Blanket side Sound Blanket top 1 Remove the sound blanket side and top see CJ_ODU_BLANKET_001 ...

Страница 51: ...ion CJ_ODU_VALVE_001 1 Heat up the brazed parts and then detach the the four way valve and the pipe see CJ_ODU_VALVE_001 2 Remove the four way valve assembly with pliers WARNING Evacuate the system and confirm that there is no refrigerant left in the system before removing the four way valve and the compressor For R32 you should evacuate the system with the vacuum pump then flush the system with n...

Страница 52: ...nd confirm that there is no refrigerant left in the system before removing the four way valve and the compressor For R32 you should evacuate the system with the vacuum pump then flush the system with nitrogen and repeat the two steps before heating up the brazed parts The operations above should be implemented by professionals Procedure Illustration CJ_ODU_COMP_001 CJ_ODU_COMP_002 Terminal Cover 1...

Страница 53: ... reference only Actual unit appearance may vary Discharge Pipe Suction Pipe 3 Remove the hex nuts and washers se curing the compressor located on the bottom plate see CJ_ODU_COMP_003 4 Heat up the brazed parts and then remove the discharge pipe and the suction pipe see CJ_ODU_COMP_004 5 Lift the compressor from the base pan as sembly with pliers ...

Страница 54: ...ase equip yourself with antistatic gloves or wrist strap to avoid damage to the board WARNING Electricity remains in capacitors even when the power supply is off Ensure the capacitors are fully discharged before troubleshooting Test the voltage between P and N on back of the main PCB with multimeter If the voltage is 36V the capacitors are fully dischar ged Note This picture is for reference only ...

Страница 55: ...ed ON F0 Current overload protection ON F1 Outdoor temperature sensor T4 is in open circuit or has short circuit ON F2 Condenser coil temperature sensor T3 is in open circuit or has short circuit ON F3 ON F4 Outdoor unit EEPROM parameter error ON F5 FLASH P0 IPM malfunction or IGBT over strong current protection FLASH P1 Over voltage or too low voltage protection FLASH P2 High temperature protecti...

Страница 56: ... Information Indoor temperature C F Indoor humidity RH Outdoor temperature C F Outdoor humidity RH Length of Connecting pipe Pipe diameter Gas pipe Liquid pipe Length of Wiring Wire diameter System Running Pressure MPa or Bar or PSI Room size L W H Failure Description Error Code of Indoor unit Code of Outdoor PCB Unit does not start Remote control does not work Indoor display shows nothing No cool...

Страница 57: ...rature T3 Outdoor coil temperature T4 Ambient temperature Tb Outlet temperature of indoor coil TP Discharge temperature TH Suction temperature FT Targeted Frequency Fr Actual Frequency IF Indoor fan speed OF Outdoor fan speed LA EXV opening steps CT Compressor continuous running time ST Causes of compressor stop A0 A1 0 1 2 3 4 5 6 L A U T Reserved Approval from Manufacturer Distributor Approved M...

Страница 58: ...Finish 1 and 2 within 10 seconds you will hear beeps for 2 seconds which means the unit goes into parameter checking mode Use the LED and SWING buttons to cycle through information displayed Pressing LED button will display the next code in the sequence Pressing SWING button will show the previous code in the sequence The following table see on next page shows information codes The screen will dis...

Страница 59: ...ay ranges from 25 C to 70 C TP display ranges from 20 C to 130 C 4 The frequency display ran ges from 0 to 159Hz 5 If the actual values exceed or fall short of the defined range the values closest to the ma ximum and minimum values will be displayed Low speed Medium speed High speed Turbo Actual fan speed is e qual to the display va lue converted to deci mal value and multi plied by 10 This is me ...

Страница 60: ...V Design Series Wall Type R32 AC 6 Troubleshooting 6 7 Displayed Code Explanation Meaning Additional Notes A0 Reserved 0 FF 2 28 5 20 5 25 A1 0 1 2 3 4 5 6 L A U T A 5 T Displayed Value ...

Страница 61: ...but fans will not start 3 The temperature on the display board cannot be set 4 Unit is on but the wind is not cold hot 5 Unit runs but it shortly stops 6 The unit starts up and stops frequently 7 Unit runs continuously but with insufficient cooling heating effect 8 Cooling mode cannot be changed to heating mode 9 Unit is noisy 6 5 1 Remote maintenance SUGGESTION When troubles occur please check th...

Страница 62: ...ntly Unit will not start ƿ ƿ ƿ ƿ The power switch is on but fans will not start ƿ ƿ ƿ The temperature on the display board cannot be set ƿ ƿ Unit is on but the wind is not cold hot ƿ ƿ ƿ Unit runs but shortly stops ƿ ƿ ƿ The unit starts up and stops frequently ƿ ƿ ƿ Unit runs con nuously but insufficient cooling hea ng ƿ ƿ ƿ ƿ ƿ Cool can not change to heat Unit is noisy Test method remedy Test vol...

Страница 63: ...rt The power switch is on but fans will not start ƿ The temperature on the display board cannot be set Unit is on but the wind is not cold hot Unit runs but shortly stops The unit starts up and stops frequently ƿ Unit runs con nuously but insufficient cooling hea ng ƿ ƿ ƿ Cool can not change to heat Unit is noisy ƿ ƿ Test method remedy Check heat load Tighten bolts or screws Close all the windows ...

Страница 64: ...denser outdoor fan will not start Evaporator indoor fan will not start Condenser Outdoor fan will not start Unit runs but it shortly stops Compressor short cycles due to overload High discharge pressure Low discharge pressure High suction pressure Low suction pressure Unit runs continuously but with insufficient cooling effect Too much cooling effect Compressor is noisy Horizontal louver can not r...

Страница 65: ...fan will not start ƿ ƿ ƿ ƿ Condenser Outdoor fan will not start ƿ ƿ ƿ ƿ ƿ Unit runs but shortly stops ƿ ƿ Compressor short cycles due to overload ƿ ƿ High discharge pressure Low discharge pressure High suc on pressure Low suc on pressure Unit runs con nuously but insufficient cooling Too cool ƿ ƿ Compressor is noisy Horizontal louver can not revolve ƿ ƿ ƿ Test method remedy Test voltage Inspect fu...

Страница 66: ...sen hold down bolts and or screws Shipping plates remain a ached Poor choices of capacity Contact of piping with other piping or external plate ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ ƿ Replace the compressor Leak test Replace restricted part Clean or replace Clean coil Check fan Change charged refrigerant volume Clean condenser or remove obstacle ...

Страница 67: ...motor x x x x x x x x x T1 sensor x x x x x x x x T2 Sensor x x x x x x x T3 Sensor x x x x x x x x x T4 Sensor x x x x x x x x x TP Sensor x x x x x x x x x Reactor x x x x x x x x Compressor x x x x x x x x Additional refrigerant x x x x x x x x Part requiring replacement F1 F2 F3 F4 F5 P0 P1 P2 P4 Outdoor PCB Outdoor fan motor x x x x x x T3 Sensor x x x x x x x x T4 Sensor x x x x x x x x TP S...

Страница 68: ...uld be replaced as a whole These pictures are only for reference actual appearance may vary Troubleshooting and repair of compressor driven chip EEPROM parameter error and communication error between outdoor main chip and compressor driven chip are same as F4 Remarks EEPROM is a read only memory whose contents can be erased and reprogrammed using a pulsed voltage The location of the EEPROM chip on...

Страница 69: ...L2 Red pin to S For units without W wire Replace indoor PCB Check the wiring connection from indoor terminal to indoor PCB are they good Turn on the unit check if W and 1 L is connected For units with only one PCB these models For units with both main PCB and IPM board Check if the power LED is on Check the AC voltage of L N output to IPM board is it same as power input Check the wiring connection...

Страница 70: ... voltage will move alternately between 25V to 25V 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 S and N or L2 and S or 2 and 3 Use a multimeter to test the resistance of the reactor which does not connect with capacitor The normal value should be around 0 Ω Otherwise the reactor...

Страница 71: ...sing signal time interval is abnormal Recommended parts to check or to prepare Connection wires PCB Troubleshooting and repair Note E2 zero crossing detection error is only valid for the unit with AC fan motor for other models this error is invalid Check the connections and power supply Is it normal Indoor main PCB is defective Replace indoor main PCB Correct the connections Turn on the unit when ...

Страница 72: ... prepare Connection wires Fan assembly Fan motor PCBs Power off then restart the unit after 2 minutes The unit is operating normally Shut off the power supply Rotate the fan by hand Does it turn easily Find the cause of the problem and resolve it Check the wiring of fan motor Is it improperly wired Ensure proper connections Measure the voltage for the fan motor from the PCB Is it within normal par...

Страница 73: ... fan motor connector If the value of the voltage is not in the range shown in below table the PCB must have problems and needs to be replaced DC motor voltage input and output voltage 220 240V AC 2 Outdoor DC Fan Motor control chip is in outdoor PCB Release the UVW connector Measure the resistance of U V U W V W If the resistance values are not equal to each other the fan motor must have problems ...

Страница 74: ... set the unit running in fan mode at high fan speed After running for 15 seconds measure the voltage of pin1 and pin2 If the value of the voltage is less than 100V 208 240V power supply the PCB must have problems and needs to be replaced Input Terminals Red Black White 1 2 3 Red Black White ...

Страница 75: ...k or to prepare Connection wires Sensors PCB Check the connection between temperature sensor and PCB Is it properly wired Ensure proper connections Measure the resistance value of the sensor Replace the sensor Is the value within acceptable parameters Replace indoor PCB E4 E5 or outdoor PCB F1 F2 F3 Note For certain models outdoor PCB could not be removed separately In this case the outdoor electr...

Страница 76: ...t receive feedback from the display board Recommended parts to check or to prepare Communication wire Indoor PCB Display board Power off then restart the unit 2 minutes later Is it still displaying the error code The unit functions normally Check the wirings and connections Ensure a proper connection Are all the connections good Replace the indoor main PCB Does the error still exist Replace the di...

Страница 77: ...oes not keep for continuous 3 minutes and this situation happens 3 times the display area will show EC and AC will turn off Recommended parts to prepare or to check T2 sensor Indoor PCB Additional refrigerant Troubleshooting and repair Power off then restart the unit 2 minutes later Put your hands in front of the indoor air outlet Is there some cool air blowing out from indoor air outlet Check the...

Страница 78: ...Check the power supply Is it in working order Stop the unit Check system for blockages Do any exist Clear the blockage Check the compressor resistance values Replace the compressor Are they within acceptable parameters Check the connections and wires Are they properly connected Ensure proper connections or replace the wires Check the reactor Replace outdoor PCB Is it in working order Replace the o...

Страница 79: ...PM module board Outdoor fan assembly Compressor Outdoor PCB Check the wiring between PCB and compressor Does an error exist Ensure proper connections or replace the wires and connectors Check the IPM Replace the IPM board or replace the outdoor PCB Check the outdoor fan and the outdoor unit ventilation Is it in working order Please refer to the solution of the Fan Speed is Out of Control malfuncti...

Страница 80: ...power supply Is it in working order Turn off the unit Check the connections and wires Are they in working order Ensure proper connections or replace the wires Power on and measure the voltage between P and N Replace the IPM board While the unit is in standby is the voltage between P and N around DC 310V 340V or 380V When starting up the unit is it in the range 220V 400V Check the reactor Is it in ...

Страница 81: ...ls with high pressure switch outdoor pressure switch cuts off the system because high pressure is higher than 4 4 MPa the LED displays the failure code Recommended parts to prepare or to check Outdoor PCB IPM module board Check the fastening screws on the PCB and IPM radiator Replace the outdoor control PCB Are they fixed tightly Tighten the screws and apply silicon grease Note For certain models ...

Страница 82: ...thod Disconnect the plug Measure the resistance of the high pressure protector if the protector is normal the value is 0 Does a problem still exist Is the outdoor ambient tempera ture higher than 50 C Check if the outdoor unit venti lation is good Ensure that the outdoor unit ventilation is functioning properly Is the outdoor fan running properly NO Please refer to the solution of the Fan speed is...

Страница 83: ...r Outdoor PCB Troubleshooting and repair Check the wiring between the PCB and compressor Is it improperly wired Check the IPM Replace the IPM board or replace the outdoor PCB Is IPM functioning properly Check the outdoor fan and the outdoor unit ventilation Is everything in good working order Please refer to Fan Speed Malfunction Check the compressor resistance values Replace the compressor Are th...

Страница 84: ...tion Description Outdoor pressure switch cuts off the system because low pressure is lower than 0 13 MPa the LED displays the failure code Recommended parts to prepare or to check Connection wires Outdoor PCB Low pressure protector Refrigerant Troubleshooting and repair see on next page ...

Страница 85: ...e protector if the protector is normal the value is 0 Does a problem still exist Is the outdoor ambient tempera ture too low Is the valve core of the high pressure valve fully opened Open the valve core of the high pressure valve Is the indoor fan running properly in cooling mode NO Please refer to the solution of the Fan speed is operating outside of normal range malfunction YES Replace outdoor m...

Страница 86: ... 4 and Chapter 5 2 Measure the resistance value of the sensor using a multi meter 3 Check corresponding temperature sensor resistance value table refer to Chapter 7 Note The picture and the value are only for reference actual condition and specific value may vary 6 8 2 Compressor Check 1 Disconnect the compressor power cord from outdoor PCB refer to Chapter 5 2 Measure the resistance value of each...

Страница 87: ...ype R32 AC 6 Troubleshooting 6 34 Terminals Blue Red 1 57Ω Terminals Blue Black Terminals Red Black Note The picture and the value are only for reference actual condition and specific value may vary Position Resistance Value ...

Страница 88: ...nect power supply 2 Discharge electrolytic capacitors and ensure all energy storage unit has been discharged 3 Disassemble outdoor PCB or disassemble IPM board 4 Measure the resistance value between P and U V W N U V W and N Digital tester Normal resistance value Normal resistance value Digital tester Red Red Black Black P N U N U V V W W Several MΩ Several MΩ Note The picture and the value are on...

Страница 89: ...41 5878 37 99 5 87359 77 171 1 29078 117 243 0 38991 2 28 39 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 33...

Страница 90: ...97 34 32 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 ...

Страница 91: ...129 135 158 165 Psi 105 106 125 141 138 132 135 143 165 176 Psi Temp C Outdoor DB Indoor DB WB 21 11 15 23 89 17 22 26 67 19 44 32 22 22 78 114 115 142 155 152 141 148 157 184 193 MPa 0 65 0 66 0 74 0 82 0 84 0 80 0 83 0 88 1 03 1 08 MPa 0 68 0 69 0 81 0 88 0 88 0 85 0 89 0 93 1 09 1 14 MPa 0 72 0 73 0 87 0 97 0 95 0 91 0 93 0 98 1 14 1 21 MPa 0 79 0 80 0 98 1 07 1 05 0 97 1 02 1 08 1 26 1 33 0 0 ...

Страница 92: ... 09 2 91 2 58 2 33 2 12 1 89 1 68 3 32 3 06 2 71 2 59 2 38 2 09 1 94 Temp C Outdoor DB WB Indoor DB 12 78 18 33 23 89 3 45 3 21 2 84 2 68 2 54 2 19 2 04 0 0 5 1 1 5 2 2 5 3 3 5 4 Temp C Outdoor DB WB Indoor DB 12 78 18 33 23 89 Temp C Outdoor DB WB Indoor DB 12 78 18 33 23 89 13 89 11 67 8 33 6 11 2 78 0 56 2 78 5 8 33 10 56 17 19 27 28 13 89 11 67 8 33 6 11 2 78 0 56 2 78 5 8 33 10 56 17 19 27 28...

Страница 93: ... 5 123 25 1 393 34 507 2600 26 377 41 977 107 559 900 9 130 5 3 209 37 777 2650 26 5 384 25 42 769 108 984 950 9 5 137 75 4 951 40 911 2700 27 391 5 43 55 110 39 1000 10 145 6 624 43 923 2750 27 5 398 75 44 32 111 776 1050 10 5 152 25 8 235 46 823 2800 28 406 45 079 113 142 1100 11 159 5 9 790 49 621 2850 28 5 413 25 45 828 114 490 1150 11 5 166 75 11 291 52 324 2900 29 420 5 46 567 115 821 1200 1...

Страница 94: ...V Design Series Wall Type R32 AC Notes Notes 1 Notes ...

Страница 95: ...V Design Series Wall Type R32 AC Notes Notes 2 Notes ...

Страница 96: ...Series Wall Type DC Inverter R32 Refrigerant AC Due to on going technological development of the products by the manufacturer we reserve the right to vary the technical specifications at any time without notice ...

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Hokkaido V-Design HCNI 262 ZA, Руководство по обслуживанию

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