Troubleshooting Guide
Table Of Contents
- 01 Cover Page
- 02 Table of Contents
- 03 Table of Contents
- 04 Safety Precautions
- 05 Safety Precautions
- 06 Safety Precautions
- 07 Safety Precautions
- 08 Safety Precautions
- 09 Safety Precautions
- 10 Specs 01: Contents
- 11 Specs 02: Model References
- 12 Specs 03: Refrigerant Pipe
- 13 Specs 04: Refrigerant Cycles
- 14 Specs 05: Refrigerant Cycles
- 15 Specs 06: Refrigerant Cycles
- 16 Specs 07: Refrigerant Cycles
- 17 Specs 08: Electrical Wiring Diagrams
- 18 Specs 09: Electrical Wiring Diagrams
- 17 Specs 10: Electrical Wiring Diagrams
- 20 Specs 011: Electrical Wiring Diagrams
- 21 Specs 012: Electrical Wiring Diagrams
- 22 Specs 013: Electrical Wiring Diagrams
- 23 Specs 014: Electrical Wiring Diagrams
- 24 Specs 015: Electrical Wiring Diagrams
- 25 Specs 016: Electrical Wiring Diagrams
- 26 Specs 017: Electrical Wiring Diagrams
- 27 Specs 018: Electrical Wiring Diagrams
- 28 Specs 019: Electrical Wiring Diagrams
- 29 Specs 020: Electrical Wiring Diagrams
- 30 Specs 021: Electrical Wiring Diagrams
- 31 Specs 022: Electrical Wiring Diagrams
- 32 Specs 023: Electrical Wiring Diagrams
- 33 Specs 024: Electrical Wiring Diagrams
- 34 Features 01: Contents
- 35 Features 02: Display
- 36 Features 03: Safety
- 37 Features 04: Basic Functions
- 38 Features 05: Basic Functions
- 39 Features 06: Basic Functions
- 40 Features 07: Basic Functions
- 41 Features 08: Basic Functions
- 42 Maintenance 01: Contents
- 43 Maintenance 02: Installation Check
- 44 Maintenance 03: Installation Check
- 45 Maintenance 04: Refrigerant Recharging
- 46 Maintenance 05: Reinstallation
- 47 Maintenance 06: Air Purging with Vacuum
- 48 Maintenance 07: Evacuation
- 49 Maintenance 08: Refrigerant Charging
- 50 IDU Disassembly 01: Contents
- 51 IDU Disassembly 02: Dimensions
- 52 IDU Disassembly 03: 9-24 Front Panel
- 53 IDU Disassembly 04: 9-24 Front Panel
- 54 IDU Disassembly 05: 9-24 Front Panel
- 55 IDU Disassembly 06: 9-24 Front Panel
- 56 IDU Disassembly 07: 9-24 Front Pane
- 57 IDU Disassembly 08: 9-24 Front Panel
- 58 IDU Disassembly 09: 9-24 Electrical
- 59 IDU Disassembly 10: 9-24 Electrical
- 60 IDU Disassembly 11: 9-24 Electrical
- 61 IDU Disassembly 12: 9-24 Electrical
- 62 IDU Disassembly 13: 9-24 Evaporator
- 63 IDU Disassembly 14: 9-24 Evaporator
- 64 IDU Disassembly 15: 9-24 Fan Motor
- 65 IDU Disassembly 16: 9-24 Fan Motor
- 66 IDU Disassembly 17: 9-24 Louver Motor
- 67 IDU Disassembly 18: 9-24 Drain Hose
- 68 IDU Disassembly 19: 30-36 Front Panel
- 69 IDU Disassembly 20: 30-36 Front Panel
- 70 IDU Disassembly 21: 30-36 Front Panel
- 71 IDU Disassembly 22: 30-36 Front Panel
- 72 IDU Disassembly 23: 30-36 Front Panel
- 73 IDU Disassembly 24: 30-36 Front Panel
- 74 IDU Disassembly 25: 30-36 Electrical
- 75 IDU Disassembly 26: 30-36 Electrical
- 76 IDU Disassembly 27: 30-36 Electrical
- 77 IDU Disassembly 28: 30-36 Electrical
- 78 IDU Disassembly 25: Evaporator
- 79 IDU Disassembly 26: Evaporator
- 80 IDU Disassembly 27: Fan Motor
- 81 IDU Disassembly 28: Louver Motor
- 82 IDU Disassembly 29: Louver Motor
- 83 IDU Disassembly 30: Drain Hose
- 84 ODU Disassembly 01: Contents
- 85 ODU Disassembly 02: Reference Table
- 86 ODU Disassembly 03: Dimensions
- 87 ODU Disassembly 04: Dimensions
- 88 ODU Disassembly 05: Dimensions
- 89 ODU Disassembly 06: Dimensions
- 90 ODU Disassembly 07: Panel Plate
- 91 ODU Disassembly 08: Panel Plate
- 92 ODU Disassembly 09: Panel Plate
- 93 ODU Disassembly 10: Panel Plate
- 94 ODU Disassembly 11: Panel Plate
- 95 ODU Disassembly 12: Panel Plate
- 96 ODU Disassembly 13: Panel Plate
- 97 ODU Disassembly 14: Panel Plate
- 98 ODU Disassembly 15: Panel Plate
- 99 ODU Disassembly 16: Electrical
- 100 ODU Disassembly 17: Electrical
- 101 ODU Disassembly 18: Electrical
- 102 ODU Disassembly 19: Electrical
- 103 ODU Disassembly 20: Fan
- 104 ODU Disassembly 21: Fan
- 105 ODU Disassembly 22: Insulation
- 106 ODU Disassembly 23: Four Way Valve
- 107 ODU Disassembly 24: Compressor
- 108 ODU Disassembly 25: Compressor
- 109 T/S 01: Contents
- 110 T/S 02: Contents
- 111 T/S 03: Safety Caution
- 112 T/S 04: Error Codes
- 113 T/S 05: Error Codes
- 114 T/S 06: Error Codes
- 115 T/S 07: Complaint Record Form
- 116 T/S 08: Complaint Record Form
- 117 T/S 09: Information Inquiry Status
- 118 T/S 10: Information Inquiry Status
- 119 T/S 11: Information Inquiry Status
- 120 T/S 12: Information Inquiry Status
- 121 T/S 13: Field Maintenance
- 122 T/S 14: Remote Maintenance
- 123 T/S 15: Remote Maintenance
- 124 T/S 16: Field Maintenance
- 125 T/S 17: Field Maintenance
- 126 T/S 18: Quick Maintenance
- 127 T/S 19: E0 EH00 EH0A F4 EC51
- 128 T/S 20: E1 EL01
- 129 T/S 21: E1 EL01
- 130 T/S 22: E2 EH02
- 131 T/S 23: E3 EH03 F5 EC07
- 132 T/S 24: Fan Motors Check
- 133 T/S 25: Fan Motors Check
- 134 T/S 26: E4 EH60 E5 EH61 F1 EC53 F2 EC52 F3 EC54 F6 EC56
- 135 T/S 27: E7 EH0b
- 136 T/S 28: EC EL0C
- 137 T/S 29: F0 PC08
- 138 T/S 30: P0 PC00
- 139 T/S 31: P1 PC01
- 140 T/S 32: P2 PC02
- 141 T/S 33: P2 PC02
- 142 T/S 34: P4 PC04
- 143 T/S 35: P6 PC03
- 144 T/S 36: P6 PC03
- 145 T/S 37: Sensors; Compressor Check
- 146 T/S 38: Compressor Check
- 147 T/S 39: IPM
- 148 T/S 40: Four Way Valve Check
- 149 T/S 41: EEV Check
- 150 Apendix 01: Contents
- 151 Appendix 02: Temp Sensor Resistance Values
- 152 Appendix 03: Temp Sensor Resistance Values
- 153 Appendix 04: System Pressure
- 154 Appendix 05: System Pressure
- 155 Appendix 06: System Pressure
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 tables:
Operation
Lamp
Timer
Lamp
Display Error Information Solution
1 time
OFF
E0
Indoor unit EEPROM parameter error TS19
2 times
OFF
E1
Indoor / outdoor unit communication error
TS20
3 times
OFF
E2
Zero-crossing signal detection error(for some models)
TS22
4 times
OFF
E3
The indoor fan speed is operating outside of the normal range TS23
5 times
OFF
E4
Indoor room temperature sensor T1 is in open circuit or has short
circuited
TS26
6 times
OFF
E5
Evaporator coil temperature sensor T2 is in open circuit or has
short circuited
TS26
9 times
OFF
E7/EH 0B
Indoor PCB/Display board communication error(for some models)
TS27
7 times
OFF
EC
Refrigerant leak detected TS28
1 times
ON
F0
Current overload protection TS29
2 times
ON
F1
Outdoor room temperature sensor T4 is in open circuit or has
circuited
TS26
3 times
ON
F2
Condenser coil temperature sensor T3 is in open circuit or has
short circuited
TS26
4 times
ON
F3
Compressor discharge temperature sensor TP is in open circuit
or has short circuited
TS26
7 times
ON
F6
Evaporator coil outlet temperature sensor T2B is in open circuit or
has short circuited(for free-match indoor units)
TS26
5 times
ON
F4
Outdoor unit EEPROM parameter error TS19
6 times
ON
F5
The outdoor fan speed is operating outside of the normal range
(for some models)
TS23
1 times
FLASH
P0
IPM malfunction or IGBT over-strong current protection TS30
2 times
FLASH
P1
Over voltage or over low voltage protection TS31
3 times
FLASH
P2
High temperature protection of IPM module or High pressure
protection
TS32
5 times
FLASH
P4
Inverter compressor drive error TS34
7 times
FLASH
P6
High pressure protection or low pressure protection
(for some models)
TS35
6 times
FLASH
P5/--
Indoor units mode conflict(match with multi outdoor unit) --
Troubleshooting 4
For other errors:
The display board may show a garbled code or a code undefined by the service manual, such as an "88"
with the Wi-Fi symbol lighting up.
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 and the wiring is correct, the
indoor PCB requires replacement. If the unit
responds, the display board
requires
replacement.