5. Electrical Wiring
Table 5-5 Air-conditioning Unit Fault Code
Pb Inverter module temperature T9 too high protection
Fault Code Fault Contents
Communication fault between the indoor unit and the air-conditioning unit
T4 air-conditioning air temperature sensor fault
T3 Condenser pipe temperature sensor fault (outlet)
AC over-voltage / under-voltage protection
EEPROM fault
Air-conditioning unit phase-sequence fault
20-minute break at first or 2-minute break later
Remark
E1
E2
E4
E6
E8
E9
E10
EA
EC
H0
T5 Exhaust temperature sensor fault
T3B condenser temperature sensor fault (middle)
T7 refrigerant cooling pipe inlet temperature sensor fault
Display P6(IPM module protection) for 3 times within 30 minutes
Display P9 (AC fan fault ) protection for 2 times within 10 minutes
There are 3 times Pb protection in 60 minutes.
inverter overcurrent protection
Exhaust overheating protection
IPM protection
DC fan fault
Anti-typhoon protection
T2 high temperature protection when heating
Current detection error protection
20-minute break at first or 2-minute break later
Display H5 after P2 protection for 3 times within 30 minutes
Only restore when power on again
Display H4 after P6 protection for 3 times within 30 minutes
Display H9 after P9 protection for 2 times within 10 minutes
Display H6 for 3 times within 100 minutes
H4
H5
H6
H7
H9
H10
H12
P1
P2
P3
P4
P5
P6
P9
P10
P11
P13
T3 or T3B condenser pipe overheating protection
Only restore when power on again
Only restore when power on again
Display P13 protection for 2 times within 10 minutesH11
Only restore when power on again
H8 Pressure sensor failure
Display P2 (system pressure is too low) protection for
3 times within 30 minutes
Display P4 (T5 Exhaust temperature is too high )
protection for 3 times within 100 minutes
Display P3(inverter over current protection) protection for
3 times within 60 minutes
Communication fault of master board and driver chip
The decrease in number of indoor unit
High pressure protection
Low pressure protection
Indoor units are lost for more than 3 minutes. It can't be
restored until number of indoor units are restored.
17
To Next Page
Loading...
Need help?
General