Comfort Aire Air Conditioner Error Codes - Problems And Solution
Table 4 Meaning of Each Error Code
Return air temperature sensor open/short
F1
Drive board communication error
P6
evaporator temperature sensor open/short
F2
Compressor overheating protection
H3
Indoor unit liquid valve temperature sensor open/short circuited
b5
Indoor and outdoor units unmatched Communication line misconnected or
LP
Indoor gas valve temperature sensor open/
b7
expansion valve error
IPM temperature sensor open/short circuited
P7
Running mode conflict
E7
Outdoor ambient temperature sensor open/ short circuited
F3
Pump-down
Fo
Outdoor unit condenser mid-tube temperature
F4
Defrost or oil retur
sensor open/short circuited Discharge temperature sensor open/short circuited
F5
Forced defrosting
H1
Indoor and outdoor communication error
E6
Compressor startup failure
LC
DC bus under-voltage protection
PL
High discharge temperature protection
E4
PH
Overload protection
E8
DC bus over-voltage protection
Compressor phase current sensing circuit
U1
Whole unit over-current protection
E5
Compressor demagnetization protection
HE
Over phase current protection
P5
PFC protection
Hc
Compressor desynchronizing
H7
IPM Temperature Protection
P8
IPM Current protection
H5
L9
Ld
Over-power protection
System charge shortage or blockage protection
Capacitor charging error
FO
F8
Compressor phase loss/reversal protection Frequency restricted/reduced with whole
unit current protection
Frequency restricted/reduced with IPM current protection
Frequency restricted/reduced with high discharge temperature
Frequency restricted/reduced with anti-
PU
En
High pressure protection
E1
F9
0 Comments