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
7.13 P6/PC 03(High pressure protection or Low pressure protection diagnosis and solution)
Description: Outdoor pressure switch cut off the system because high pressure is higher than 638 PSI or outdoor
pressure switch cut off the system because low pressure is lower than 19 PSI, the LED displays the failure code.
Recommended parts to prepare:
• Connection wires
• Outdoor PCB
• Refrigerant
• Pressure switch
• Outdoor fan
Troubleshooting and repair:
Troubleshooting 35
Are the high pressure switch
and main control board wired
correctly?
Method: 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 ?
Yes
Yes
No
No
Is the high pressure
protector defective?
Is the outdoor ambient
temperature higher than
122°F ?
No
Yes
Check if the outdoor unit
ventilation is good
Yes
Is the heat exchanger dirty ?
No
Yes
Replace outdoor main board.
Is the problem resolved?
No
High pressure protection
Is the outdoor fan running
properly ?
No
Yes
NO
Connect high pressure switch
and main control board
Replace high pressure protector
Ensure that the outdoor unit
ventilation is configured properly
Clean the heat exchanger
Check whether the refrigerant
system is functioning properly
Stop the unit until temps drop
Please refer to the solution of the
“Fan Speed is operating outside of
normal range” malfunction.
(continued on next page)