Display
Fault Description
(reserved)
P0
High pressure protection
P1
Low pressure protection
P2
Primary side over current protection
P3
Ultra-high exhaust temperature
P4
protection
T3 /T3B high temperature protection
P5
IPM module protection
P6
The lack of the degree of superheat
P7
(reserved)
P8
Outdoor DC fan failure
P9
Inverter compressor malfunction
L0
DC generatrix low voltage protection
L1
DC generatrix high voltage protection
L2
L3
reserved
L4
MCE error/ Synchronization / closed loop
L5
Zero speed protection
L6
reserved
Wrong phase protection
L7
Speed difference >15Hz protection
L8
between the front and the back clock
Speed difference >15Hz protection
L9
between the real and the setting speed
Display
Communication failure between
H0
external main board and drive board
Communication failure between
H1
master and slave chips
The decrease in the number of outdoor
H2
failures
The increase in the number of outdoor
H3
failures
H4
3 P6 protection in 60 minutes
H5
3 P2 protection in 60 minutes
3 P4 protection in 100 minutes
H6
The decrease in the number of indoor
H7
failures
H8
Pressure sensor failure
H9
3 P9 in 30 minutes
HA
3 P3 in 60 minutes
IPM module temperature too high
protection
PA
Anti-typhoon protection
Evaporate temperature T2 too high
protection
Pb
Refrigerant cooling temperature T6
too high protection
Temperature T3 too high protection in
heating mode
PC
Fan protection in zone A for 5 minutes
during heating
Abnormal current protection
Pd
Over current protection in DC side
PE
High pressure protection
PF
(High pressure sensor)
12
Fault Description
V.1