Fault Code
Air-conditioning unit phase-sequence fault
E1
E2
Communication fault between the indoor unit and the Air-conditioning unit
T4 Air-conditioning air temperature sensor fault
E4
T3 Condenser pipe temperature sensor fault (outlet)
E6
EB
AC over-voltage / under-voltage protection
E9
E10
T3B condenser temperature sensor fault (middle)
EA
T7 refrigerant cooling pipe inlet temperature sensor fault
EC
Communication fault of master board and driver chip
H0
Display P6(IPM module protection) for 3 times within 30 minutes
H4
Display P2 (system pressure is too low) protection for
H5
Display P4 (T5 Exhaust temperature is too high )
H6
protection for 3 times within 100 minutes
H7
HB
Display P9 (AC fan fault ) protection for 2 times within 10 minutes
H9
Display P3 (inverter over current protection) protection
H10
Display P13 protection for 2 times within 10 minutes
H11
There are 3 times Pb protection in 60 minutes.
H1 2
P1
P2
P3
P4
T3 or T3B condenser pipe overheating protection
P5
P6
pg
P10
T2 high temperature protection when heating
P11
P1 3
lnverter module temperature T9 too high protection
Pb
Table 5-5 Air-conditioning Unit Fault Code
Fault Contents
T5 Exhaust temperature sensor fault
EEPROM fault
3 times within 30 minutes
The decrease in number of indoor unit
Pressure sensor failure
for 3 times within 60 minutes
High pressure protection
Low pressure protection
inverter overcurrent protection
Exhaust overheating protection
1PM protection
DC fan fault
Anti-typhoon protection
Cu rrent detection error protection
20-minute break at first or 2-minute break later
20-minute break at first or 2-minute break later
lndoor units are lost for more than 3 minutes. lt can't
be restored until number of indoor units are restored.
Display H5 after P2 protection for 3 times within 30 minutes
Display H6 for 3 times within 100 minutes
Display H4 after P6 protection for 3 times within 30 minutes
Display H9 after P9 protection for 2 times within 10 minutes
15
Remark
Only restare when power on again
Only restare when power on again
Only restare when power on again
Only restare when power on again