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Tr

oubleshooting



Page 62

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2. General Troubleshooting

2.1 Error Display (Indoor Unit)

When the indoor unit encounters a recognized error, the operation lamp will flash in a corresponding series, the timer
lamp may turn on or begin flashing, and an error code will be displayed. These error codes are described in the following
table:

Operation

lamp

flashes

Timer lamp

LED

Display

Error

Information

Solution

1 time

OFF

E0

Indoor unit EEPROM parameter error

Page 72

2 times

OFF

E1

Indoor / outdoor units communication error

Page 73

3 times

OFF

E2

Zero-crossing signal detection error

Page 75

4 times

OFF

E3

The indoor fan speed is operating outside of the normal range

Page 76

5 times

OFF

E4

Indoor room temperature sensor T1 is in open circuit or has
short circuited

Page 78

6 times

OFF

E5

Evaporator coil temperature sensor T2 is in open circuit or
has short circuited

Page 78

9 times

OFF

E7

Indoor PCB /Display board communication error

Page 79

7 times

OFF

EC

Refrigerant leak detected

Page 80

1 time

ON

F0

Overload current protection

Page 81

2 times

ON

F1

Outdoor ambient temperature sensor T4 open circuit or
short circuit

Page 78

3 times

ON

F2

Condenser coil temperature sensor T3 is in open circuit or
has short circuited

Page 78

4 times

ON

F3

Compressor discharge temperature sensor TP open circuit
or short circuit

Page 78

5 times

ON

F4

Outdoor unit EEPROM parameter error

Page 72

6 times

ON

F5

The outdoor fan speed is operating outside of the normal range

Page 76

1 time

FLASH

p0

IPM malfunction or IGBT over-strong current protection

Page 82

2 times

FLASH

p1

Over voltage or over low voltage protection

Page 83

3 times

FLASH

p2

High temperature protection of IPM module

Page 84

5 times

FLASH

p4

Inverter compressor drive error

Page 85

For other errors:

The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a
temperature reading.

Troubleshooting:

Test the unit using the remote control. If the unit does not respond to the remote, the indoor PCB requires replacement.
If the unit responds, the display board requires replacement.

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Содержание TS2MVI32-09

Страница 1: ...ENGLISH SERVICE MANUAL TS2ΜVI32 09 TS2MVO32 09 TS2ΜVI32 12 TS2MVO32 12 ...

Страница 2: ......

Страница 3: ...sembly 20 1 Maintenance 2 Disassembly 5 Troubleshooting 59 1 Safety Caution 2 General Troubleshooting 3 Error Diagnosis and Troubleshooting Without Error Code 4 Quick Maintenance by Error Code 5 Troubleshooting by Error Code Appendix 86 i Temperature Sensor Resistance Value Table for T1 T2 T3 and T4 C K ii Temperature Sensor Resistance Value Table for TP C K iii Pressure On Service Port Caution Ri...

Страница 4: ......

Страница 5: ...Contents 1 Precautions 2 2 Information servicing 3 Safety Precautions ...

Страница 6: ...ould perform electri cal work For more information contact your dealer seller or an authorized service center CAUTION While unpacking be careful of sharp edges around the unit as well as the edges of the fins on the con denser and evaporator 1 3 Operation and Maintenance WARNING Do not use defective or under rated circuit breakers Ensure the unit is properly grounded and that a dedicated circuit a...

Страница 7: ...ing place the area around the equipment is to be surveyed to make sure that there are no flammable 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 Th...

Страница 8: ...ition of refrigerant in the atmosphere from a leak 2 12 Cabling Check that cabling will not be subject to wear corrosion excessive pressure vibration sharp edges or any other adverse environmental effects The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans 2 13 Detection of flammable refrigerants Under no circumstances shall p...

Страница 9: ... re use of reclaimed refrigerant It is essential that electrical power is available before the task is commenced Become familiar with the equipment and its operation Isolate system electrically Before attempting the procedure ensure that mechanical handling equipment is available if required for handling refrigerant cylinders all personal protective equipment is available and being used correctly ...

Страница 10: ...sociated electrical components are sealed to prevent ignition in the event of a refrigerant release Consult manufacturer if in doubt The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder and the relevant Waste Transfer Note arranged Do not mix refrigerants in recovery units and especially not in cylinders If compressors or compressor oils are to b...

Страница 11: ...Contents 1 Model Reference 8 2 Electrical Wiring Diagrams 9 2 1 Indoor Unit 9 2 2 Outdoor Unit 11 Specifications ...

Страница 12: ...the following table to determine the specific indoor and outdoor unit model number of your purchased equipment Indoor Unit Model Outdoor Unit Model Capacity Btu Power Supply TS2ΜVI32 09 TS2MVO32 09 9k 220 240V 50Hz 1Phase TS2ΜVI32 12 TS2MVO32 12 12k ...

Страница 13: ...iation Paraphrase Y G Yellow Green Conductor ION Positive and Negative Ion Generator CAP Capacitor PLASMA Electronic Dust Collector L LIVE N NEUTRAL Heater The Electric Heating Belt of Indoor Unit T1 Indoor Room Temperature T2 Coil Temperature of Indoor Heat Exchanger Middle ...

Страница 14: ...r MULTI and MONO unit without 1W standby control feature X Y E 12V 5V HA HB To CCM Comm Bus or 485 Wire controller To Randomly Connected Wire controller To Remote Switch To Remote Alarm 4 3 This symbol indicates the element is optional the actual shape shall prevail M M M 5 3or2 ION OPTIONAL Y G 3 Applicable to AC motor only OPTIONAL CAP 2 OPTIONAL OPTIONAL CN701 SWITCH BOARD 2 ...

Страница 15: ...Abbreviation Paraphrase 4 WAY Gas Valve Assembly 4 WAY VALVE AC FAN Alternating Current FAN DC FAN Direct Current FAN CT1 AC Current Detector COMP Compressor L PRO Low Pressure Switch H PRO High Pressure Switch EEV Electronic Expansion Valve ...

Страница 16: ...2 TS2MVO32 09 TS2MVO32 12 4 WAY OPTIONAL DC FAN CN 7 AC FAN CAPACITOR PAN HEATER CRANKCASE HEATER BROWN I N D O O R U N I T S W 2 N L N BLUE OR BLACK 1 L Y G AMBIENT TEMP SENSOR Y G Y G Y G Y G Y G U V W BLUE RED BLACK Y G ...

Страница 17: ...Mode 15 1 6 Heating Mode 15 1 7 Auto mode 16 1 8 Drying Mode 16 1 9 Forced Operation Function 16 1 10 Sleep Function 16 1 11 Auto Restart Function 16 1 12 Refrigerant Leakage Detection 17 1 13 8 C Heating Optional 17 1 14 Self Clean Optional 17 1 15 Follow Me Optional 17 1 16 Silence Optional 17 1 17 Information Inquiry 17 Product Features ...

Страница 18: ...nism based on the unit s current voltage and temperature If automatic shutoff 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 indoor fan will operate after a period of 7 seconds If the unit is in heating mode the indoor fan is regulated by the anti...

Страница 19: ...T means the temperature compensation When T1 Ts T the compressor ceases operation When T1 Ts T 1 5 C the compressor continues operation When the AC is operating in mute mode the compressor operates at a low frequency When the current exceeds the preset value the current protection function activates and the compressor ceases operation 1 6 2 Indoor Fan Control When the compressor is on the indoor f...

Страница 20: ... the temperature rises 1 C to not higher than 30 C every hour After 2 hours the temperature stops rising and the indoor fan is fixed at low speed When heating the temperature decreases 1 C to not lower than 17 C every hour After 2 hours the temperature stops decreasing and the indoor fan is fixed at low speed Anti cold wind function takes priority The operating time for sleep mode is 7 hours after...

Страница 21: ...es or you press Follow Me the function turns off The unit regulates temperature based on its own sensor and settings 1 16 Silence Optional Press Silence on the remote control to enable the SILENCE function While this function is active the compressor frequency is maintained at a lower level than F2 The indoor unit will run at faint breeze which reduces noise to the lowest possible level 1 17 Infor...

Страница 22: ...perature Ambient temperature Outlet temperature of indoor coil Discharge temperature Suction temperature Targeted frequency Actual frequency IF Indoor fan speed 0 1 2 3 4 14 FF OFF Low speed Medium speed High speed Turbo Actual fan speed is equal to the display value converted to decimal value and multiplied by 10 This is measured in RPM N A Used for some large capacity motors Used for some small ...

Страница 23: ...Product Features Page 19 Displayed code Explanation Displayed value 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 ...

Страница 24: ...nce 21 1 1 First Time Installation Check 21 1 2 Refrigerant Recharge 23 1 3 Re Installation 24 1 3 1 Indoor Unit 24 1 3 2 Outdoor Unit 26 2 Disassembly 28 2 1 Indoor Unit 28 2 2 Outdoor Unit 40 Maintenance and Disassembly ...

Страница 25: ...revent 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 liquid detergent onto the indoor unit connections and outdoor unit connections If there is gas leakage bubbles will form on the connection...

Страница 26: ...e 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 then check whether the gauge needle moves after turning off the vacuum pump If the gauge needle moves backward check wether there is...

Страница 27: ...tom of the cylinder 4 If the refrigerant is R410A invert the cylinder to ensure a complete liquid charge 5 Open the valve at the bottom of the cylinder for 5 seconds to purge the air in the charge hose then fully tighten the charge hose with push pin Handle Lo to the service port of 3 way valve 6 Place the charging cylinder onto an electronic scale and record the starting weight 7 Fully open the H...

Страница 28: ... 3 way valve s gas service port 3 Open the Handle Lo manifold valve to purge air from 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...

Страница 29: ...nd 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 then check whether the g...

Страница 30: ...cuate the system for approximately one hour Confirm that the compound meter indicates 0 1 MPa 14 5Psi 4 Close the valve 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...

Страница 31: ...the cylinder to ensure a complete liquid charge 5 Open the valve at the bottom of the cylinder for 5 seconds to purge the air in the charge hose then fully tighten the charge hose with push pin Handle Lo to the service port of 3 way valve 6 Place the charging cylinder onto an electronic scale and record the starting weight 7 Fully open the Handle Lo manifold valve 2 and 3 way valves 8 Operate the ...

Страница 32: ...ation 1 Hold the front panel by the tabs on the both sides and lift it see CJ_AF_ INV_001 2 Push up the bottom of an air filter and then pull it out downwards see CJ_AF_INV_002 CJ_AF_INV_001 CJ_AF_INV_002 Note This section is for reference only Actual unit appearance may vary Front Panel Tab Filter ...

Страница 33: ...he hook towards left to open it see CJ_AF_INV_003 4 Bend the horizontal louver lightly by both hands to loosen the hooks then remove the horizontal louver see CJ_AF_INV_004 CJ_AF_INV_003 CJ_AF_INV_004 Note This section is for reference only Actual unit appearance may vary Hook Horizontal Louver Hook ...

Страница 34: ...cover see CJ_AF_INV_005 1 and CJ_AF_INV_005 2 6 Disconnect the connector for display board see CJ_AF_INV_005 3 7 Remove the display board see CJ_AF_ INV_005 4 CJ_AF_INV_005 Note This section is for reference only Actual unit appearance may vary CJ_AF_INV_005 1 CJ_AF_INV_005 2 CJ_AF_INV_005 3 CJ_AF_INV_005 4 ...

Страница 35: ...ion 8 Open the screw caps 2 and the remove the screws see CJ_AF_ INV_006 9 Release the 4 hooks 10 Release the seven hooks in the back see CJ_AF_INV_007 CJ_AF_INV_006 CJ_AF_INV_007 Note This section is for reference only Actual unit appearance may vary Hooks ...

Страница 36: ... Illustration 11 Pull out the panel frame while pushing the hook through a clearance between the panel frame and the heat exchanger see CJ_AF_INV_008 CJ_AF_INV_008 Note This section is for reference only Actual unit appearance may vary Panel Frame ...

Страница 37: ...ove the cover of electronic box and the terminal cover see CJ_AF_ INV_009 2 Pull out the room temperature sensor T1 and the coil temperature sensor T2 see CJ_AF_INV_010 3 Remove the two screws used for the ground connection see CJ_AF_ INV_010 CJ_AF_INV_009 CJ_AF_INV_010 Note This section is for reference only Actual unit appearance may vary T1 Sensor Ground Screws T2 Sensor Fixing Screw Electronic...

Страница 38: ...ight image to remove it CJ_AF_INV_011 2 6 Disconnect the wires Then remove the electronic main board CJ_AF_ INV_012 CJ_AF_INV_011 2 CJ_AF_INV_012 Note This section is for reference only Actual unit appearance may vary Fixing Screw Electronic Box Indoor Fan Motor Applicable to AC Motor Only Swing Motor Display Board Pipe Temperature Sensor Room Temperature Sensor CJ_AF_INV_011 1 ...

Страница 39: ...ly Page 35 Procedure Illustration 7 Remove the fixing screw then remove the capacitor of fan motor see CJ_AF_ INV_013 CJ_AF_INV_013 Note This section is for reference only Actual unit appearance may vary Capacitor of Fan Motor ...

Страница 40: ... Disassemble the pipe holder located at the rear of the unit see CJ_AF_INV_014 2 Remove the screws on the evaporator located at the fixed plate see CJ_AF_ INV_015 3 Remove the two screws on the evaporator located at the base of the bearing side see CJ_AF_INV_016 CJ_AF_INV_014 CJ_AF_INV_015 CJ_AF_INV_016 Note This section is for reference only Actual unit appearance may vary Pipe Holder Screws Scre...

Страница 41: ...Maintenance and Disassembly Page 37 Procedure Illustration 4 Pull out the evaporator see CJ_AF_ INV_017 CJ_AF_INV_017 Note This section is for reference only Actual unit appearance may vary Evaporator ...

Страница 42: ...tor and fan Procedure Illustration 1 Remove the two screws and remove the fixing board of the fan motor see CJ_AF_ INV_018 2 Remove the Bearing sleeve see CJ_AF_ INV_019 3 Remove the fixing screw see CJ_AF_ INV_020 4 Pull out the fan motor and fan assembly from the side CJ_AF_INV_018 CJ_AF_INV_019 CJ_AF_INV_020 Note This section is for reference only Actual unit appearance may vary Fixing Screw Sc...

Страница 43: ...ectrical parts refer to 1 Front panel 2 Electrical parts before disassembling step motor Procedure Illustration 1 Remove the two screws then remove the stepping motor see CJ_AF_INV_021 CJ_AF_INV_021 Note This section is for reference only Actual unit appearance may vary Stepping Motor ...

Страница 44: ...emove the screws of the big handle and then remove the big handle 1 screws see CJ_AB30_INV_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_ AB30_INV_002 CJ_AB30_INV_001 CJ_AB30_INV_002 Note This section is for reference only Actual unit appearance may vary Big Handle Top Cover ...

Страница 45: ... front panel and then remove the front panel 6 screws see CJ_AB30_INV_003 5 Remove the screws of water collecting cover 1 screw see CJ_AB30_ INV_004 CJ_AB30_INV_003 CJ_AB30_INV_004 Note This section is for reference only Actual unit appearance may vary Front Panel Water Collecting Cover ...

Страница 46: ...Page 42 Procedure Illustration 1 Remove the screws of the right panel and then remove the right panel 5 screws see CJ_AB30_INV_005 CJ_AB30_INV_005 Note This section is for reference only Actual unit appearance may vary Right Panel ...

Страница 47: ...ation 1 Remove the nut securing the fan with a spanner see CJ_ODU_ INV_001 2 Remove the fan 3 Remove the screws of the top cover 2 screws see CJ_ODU_INV_002 4 Unfix the hooks and then open the electronic control box cover 4 hooks see CJ_ODU_INV_003 CJ_ODU_INV_001 CJ_ODU_INV_002 CJ_ODU_INV_003 Note This section is for reference only Actual unit appearance may vary D cut Hook ...

Страница 48: ...nector for fan motor from the electronic control board see CJ_ODU_INV_004 6 Remove the fixing screws of the fan motor 4 screws see CJ_ODU_INV_005 7 Remove the fan motor CJ_ODU_INV_004 CJ_ODU_INV_005 Note This section is for reference only Actual unit appearance may vary Fan Motor ...

Страница 49: ...10 2 Pull out the two blue wires connected with the four way valve CJ_ODU_ INV_010 3 Pull out connectors of the condenser coil temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor TP CJ_ODU_INV_010 4 Disconnect the electronic expansion valve wire CJ_ODU_INV_010 5 Then remove the electronic control box see CJ_ODU_INV_010 CJ_ODU_INV_010 Compressor T3 T4 TP Electronic Expansion Val...

Страница 50: ...Maintenance and Disassembly Page 46 ...

Страница 51: ...the panel plate electrical parts and fan assembly refer to 1 Panel plate 2 Electrical parts and 3 Fan assembly before disassembling sound blanket Procedure Illustration 1 Remove the sound blanket side and top see CJ_ODU_INV_012 CJ_ODU_INV_012 Note This section is for reference only Actual unit appearance may vary Sound Blanket side Sound Blanket top ...

Страница 52: ...te electrical parts and fan assembly refer to 1 Panel plate 2 Electrical parts and 3 Fan assembly before disassembling four way valve Procedure Illustration 1 Heat up the brazed parts and then detach the the four way valve and the pipe see CJ_ODU_INV_013 2 Remove the four way valve assembly with pliers CJ_ODU_INV_013 Note This section is for reference only Actual unit appearance may vary ...

Страница 53: ...fan assembly refer to 1 Panel plate 2 Electrical parts and 3 Fan assembly before disassembling compressor Procedure Illustration 1 Remove the flange nut of terminal cover and remove the terminal cover see CJ_ ODU_INV_014 2 Disconnect the connectors see CJ_ODU_ INV_015 CJ_ODU_INV_014 CJ_ODU_INV_015 Note This section is for reference only Actual unit appearance may vary Terminal Cover ...

Страница 54: ...he bottom plate see CJ_ODU_INV_016 4 Heat up the brazed parts and then remove the the discharge pipe and the suction pipe see CJ_ODU_INV_017 5 Lift the compressor from the base pan assembly with pliers CJ_ODU_INV_016 CJ_ODU_INV_017 Note This section is for reference only Actual unit appearance may vary Discharge Pipe Suction Pipe ...

Страница 55: ...communication error 73 5 4 E2 Zero crossing detection error diagnosis and solution 75 5 4 E3 F5 Fan speed is operating outside of the normal range diagnosis and solution 76 5 5 E4 E5 F1 F2 F3 Open circuit or short circuit of temperature sensor diagnosis and solution 78 5 6 E7 Indoor PCB Display board communication error 79 5 7 EC Refrigerant Leakage Detection diagnosis and solution 80 5 8 F0 Overl...

Страница 56: ...2 5 10 P1 Over voltage or too low voltage protection diagnosis and solution 83 5 11 P2 High temperature protection of IPM module diagnosis and solution 84 5 12 P4 Inverter compressor drive error diagnosis and solution 85 ...

Страница 57: ...ischarged before troubleshooting For other models connect discharge resistance approx 100Ω 40W or a soldering iron plug between the positive and negative terminals of the electrolytic capacitor The terminals are located on the bottom surface of the outdoor PCB Note This picture is for reference only Actual appearances may vary Electrolytic Capacitors ...

Страница 58: ...es OFF EC Refrigerant leak detected Page 80 1 time ON F0 Overload current protection Page 81 2 times ON F1 Outdoor ambient temperature sensor T4 open circuit or short circuit Page 78 3 times ON F2 Condenser coil temperature sensor T3 is in open circuit or has short circuited Page 78 4 times ON F3 Compressor discharge temperature sensor TP open circuit or short circuit Page 78 5 times ON F4 Outdoor...

Страница 59: ...e field maintenance Problem Solution 1 Unit will not start Page 66 67 2 The power switch is on but fans will not start Page 66 67 3 The temperature on the display board cannot be set Page 66 67 4 Unit is on but the wind is not cold hot Page 66 67 5 Unit runs but shortly stops Page 66 67 6 The unit startup and stop frequently Page 66 67 7 Unit runs continuously but insufficient cooling heating Page...

Страница 60: ...8 69 5 Condenser Outdoor fan will not start Page 68 69 6 Unit runs but shortly stops Page 68 69 7 Compressor short cycles due to overload Page 68 69 8 High discharge pressure Page 68 69 9 Low discharge pressure Page 68 69 10 High suction pressure Page 68 69 11 Low suction pressure Page 68 69 12 Unit runs continuously but insufficient cooling Page 68 69 13 Too cool Page 68 69 14 Compressor is noisy...

Страница 61: ...x x x x x x x Outdoor fan motor x x X x x x x x x Temperature sensor x x x x x T2 Sensor x x x x x x x x Additional refrigerant x x x x x x x x x Compressor x x x x x x x x IPM board x x x x x x x x x Outdoor unit x x x x x x x x Display board x x x x x x x x Part requiring replacement Error Code F2 F3 F4 F5 P0 P1 P2 P4 Indoor PCB x x x x x x x x Outdoor PCB Reactor x x x x x x x Indoor fan motor ...

Страница 62: ...ng frequently Unit will not start The power switch is on but fans will not start 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 Unit runs continuously but insufficient cooling heating Cool can not change to heat Unit is noisy Test method remedy Test voltage Close the power switch Inspect...

Страница 63: ...t or outlet of either unit is blocked Interference from cell phone towers and remote boosters Shipping plates remain attached Check heat load Tighten bolts or screws Close all the windows and doors Remove the obstacles Reconnect the power or press ON OFF button on remote control to restart Remove them Others ...

Страница 64: ...rt Condenser Outdoor fan will not start Unit runs but shortly stops Compressor short cycles due to overload High discharge pressure Low discharge pressure High suction pressure Low suction pressure Unit runs continuously but insufficient cooling Too cool Compressor is noisy Horizontal louver can not revolve Test method remedy Test voltage Inspect fuse type size Inspect connections tighten Test cir...

Страница 65: ...bulb Heavy load condition Loosen hold down bolts and or screws Shipping plates remain attached Poor choices of capacity Contact of piping with other piping or external plate Replace the compressor Leak test Replace restricted part Clean or replace Clean coil Check fan Change charged refrigerant volume Clean condenser or remove obstacle Purge evacuate and recharge Remove obstruction to air flow Rem...

Страница 66: ...T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp Tp sensor Measure the resistance value of each winding by using the multi meter 5 1 2 Compressor checking Measure the resistance value of each winding by using the tester Position Resistance Value KSK89D53UEZ KSM135D23UFZ KTF235D22UMT Blue Red 2 35Ω 20 C 68 F 1 28Ω 20 C 68 F 0 ...

Страница 67: ...acity electrolytic capacitors discharge completely and dismount the IPM Use a digital tester to measure the resistance between P and UVWN UVW and N Digital tester Normal resistance value Digital tester Normal resistance value Red Black Several MΩ Red Black Several MΩ P N U N U V V W W Red ...

Страница 68: ...nd turn it on 2 minutes later Is it still displaying the error code The unit is operating normally NO If the EEPROM chip is welded on main PCB replace the main PCB directly Otherwise check if the EEPROM chip plugged in main PCB well YES Is it plugged well Correct the connection NO Replace the indoor outdoor main PCB Remarks The location of the EEPROM chip on the indoor and outdoor PCB is shown in ...

Страница 69: ...erating normally NO Measure Vs Vs is the voltage between S and N of outdoor unit Red pan S Black pan N YES Is the voltage moving alternately between Positive and negative Check the outdoor wiring connection Is it normal Check the reactor YES Is it normal Replace the outdoor PCB Power on YES Is the error resolved Replace the indoor PCB NO Replace the reactor NO Check the indoor wiring connections I...

Страница 70: ...leshooting Page 74 Remarks 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 ...

Страница 71: ...feedback for 4 minutes or the zero crossing signal time interval is abnormal Recommended parts to prepare Connection mistake Faulty PCB Troubleshooting and repair Check the connections and power supply Correct the connections Turn on the unit when the power supply is good NO Indoor main PCB is defective Replace indoor main PCB YES Is it normal ...

Страница 72: ...F5 Recommended parts to prepare Wiring mistake Faulty fan assembly Faulty fan motor Faulty PCB Troubleshooting and repair YES Power off then restart the unit after 2 minutes Is it within normal parameters Replace the fan motor Does a problem remain The unit is operating normally NO Shut off the power supply Rotate the fan by hand YES Does it turn easily Find the cause of the problem and resolve it...

Страница 73: ...ms and need to be replaced DC motor voltage input and output voltage 220 240V 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 6 Blue FG 14 17 5V 2 Indoor AC Fan Motor Power on and 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 2...

Страница 74: ... than 4 94V the LED will display the failure Recommended parts to prepare Wiring mistake Faulty sensor Faulty PCB Troubleshooting and repair Check the connection between temperature sensor and PCB Replace indoor or outdoor PCB Is it within acceptable parameters Is it properly wired Ensure proper connections NO Measure the resistance value of the sensor YES Replace the Sensor NO YES ...

Страница 75: ...g mistake Faulty PCB Display board malfunction Troubleshooting and repair Power off then restart the unit 2 minutes later Is it still displaying the error code Check the wirings and connection YES The unit is operating normally NO Are all the connections good Correct the connection or replace the Wirings NO Replace the indoor main PCB YES Is the error extinguished Replace the Display board NO ...

Страница 76: ... the display area will show EC and AC will turn off Recommended parts to prepare Faulty T2 sensor Faulty indoor PCB System problems such as leakage or blockages Troubleshooting and repair Power off then restart the unit 2 minutes later Are any leakages present Check System for blockages and clear blockages if present Does a problem remain Put your hands in front of the indoor air outlet YES Is the...

Страница 77: ...r malfunction Troubleshooting and repair Check the power supply Do any exist Are they within acceptable parameters Are they properly connected Is it in working order Replace the outdoor unit Is it in working order Check system for blockages YES Stop the unit NO Clear the blockage NO Check the compressor resistance values YES Replace the compressor NO Check the connections and wires YES Ensure prop...

Страница 78: ...ulty outdoor PCB Troubleshooting and repair Check the wiring between PCB and compressor Does an error exist Ensure proper connections or replace the wires and connectors YES Check the IPM NO Is it in working order Replace the IPM board or replace the outdoor PCB NO Check the outdoor fan and the outdoor unit ventilation YES Is it in working order Please refer to the solution of the Fan Speed is Out...

Страница 79: ...roubleshooting and repair Check the power supply Is it in working order Turn off the unit NO Check the connections and wires YES Are they in working order Ensure proper connections or replace the wires NO Power on and measure the voltage between P and N YES While the unit is in standby is the voltage between P and N is around DC 310V 340V or 380V When start up the unit is it in 220V 400V Replace t...

Страница 80: ...e of IPM module is higher than setting value the LED displays this failure code Recommended parts to prepare Faulty PCB Connection problems Troubleshooting and repair Check the fastening screws on the PCB and IPM radiator Are they fixed tightly Replace the outdoor control PCB Tighten the screws and apply silicon grease NO YES ...

Страница 81: ...assembly Compressor malfunction Faulty outdoor PCB Troubleshooting and repair Check the wiring between the PCB and compressor Is it improperly wired Ensure proper connections or replace the wires and connectors YES Check the IPM NO Is it functioning properly Replace the IPM board or replace the outdoor PCB NO Check the outdoor fan and the outdoor unit ventilation YES Is it functioning properly Ple...

Страница 82: ...Contents i Temperature Sensor Resistance Value Table for T1 T2 T3 and T4 C K 87 ii Temperature Sensor Resistance Value Table for TP C K 88 iii Pressure On Service Port 89 Appendix ...

Страница 83: ...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 33246 4 39 28 3459 44 111 4...

Страница 84: ... 78 75 167 8 084 115 239 2 422 4 25 222 8 36 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...

Страница 85: ...9 44 95 35 105 40 56 115 46 11 120 48 89 PSI 70 59 95 96 108 118 121 115 119 128 150 157 PSI 75 63 99 101 117 128 126 122 129 135 158 165 PSI 80 67 105 106 125 141 138 132 135 143 165 176 PSI 90 73 114 115 142 155 152 141 148 157 184 193 F C ODT IDT 0 17 5 15 15 9 44 45 7 22 75 23 89 85 29 44 95 35 105 40 56 115 46 11 120 48 89 MPA 70 59 0 65 0 66 0 74 0 82 0 84 0 80 0 83 0 88 1 03 1 08 MPA 75 63 ...

Страница 86: ...T 57 53 13 89 11 67 47 43 8 33 6 11 37 33 2 78 0 56 27 23 2 78 5 17 13 8 33 10 56 0 2 17 19 17 18 27 28 PSI 55 448 421 374 337 308 273 244 PSI 65 480 444 394 375 346 303 282 PSI 75 499 466 411 389 369 318 296 F C ODT IDT 57 53 13 89 11 67 47 43 8 33 6 11 37 33 2 78 0 56 27 23 2 78 5 17 13 8 33 10 56 0 2 17 19 17 18 27 28 MPA 55 3 09 2 91 2 58 2 33 2 12 1 89 1 68 MPA 65 3 32 3 06 2 71 2 59 2 38 2 0...

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