Lennox LIAC060-180P431 - Page 24

23
8. Fault code table
L
D
P
Running indication under compressor ratio limited condition
U
Condensor coil sensor(T3) is seated fault in cooling
C
Running indication under current limited condition
H
Running indication under high pressure(PT) limited condition in heating
C3
Indication under charge model
Running indication under T3 limited condition
Running indication under T5 limited condition
A
F
Running indication under Tf limited condition
Running indication under low voltage limited condition
Running indication under return oil model
IPM module protection or frequent power on/off
H4
H5
H6
3 times (P4) protection in 100 minutes,system lockup
F1
Temperature sensor fault(T3 /T4/T5/TF)
Hb
High pressure(PT) protection in Heating
HH
2 times(PH) protection in 200 minutes,system lockup
3 times(P0) protection in 120 minutes,system lockup
5 times(Hb) protection in 180 minutes,system lockup
3 times(C3) protection in 120 minutes,system lockup
2 times(E7) protection in 180 minutes,system lockup
2 times(PC) protection in 180 minutes,system lockup
High/low voltage protection
DC fan motor fault
System lockup, 2 times(E6),protection in 10 minutes
Compressor discharge sensor(T5) is seated fault
E4
CODE
3 times (P3) protection in 120 minutes,system lockup
3 times (P6) protection in 60 minutes,system lockup
5 times (P2) protection in 100 minutes,system lockup
P6
PH
PC
Reversing valve fault protection
High pressure switch(HPS) protection
F5
Low pressure (PT) Protection
P1
P0
High compressor discharge temperature(T5) protection
High condensor coil temp. (T3) protection
IPM module protection
P8
Hurricane protection of the DC fan motor
Low discharge superheat protection
F3
FAULT DESCRIPTION
H8
Pressure transducer(PT) short or open fault
EEPROM fault
High pressure switch(HPS) fault
Compressor over current protection
5 times (P5) protection in180 minutes,system lockup
F4
The module radiator temperature (TF)protection
Communication fault in main contrrol chip
CE
5 times (P1) protection in 150 minutes,system lockup
dF
Running indication under defrost model