Gree GUHD18ND3FO - Troubleshooting; Display of Error Code

U-Match Series DC Inverter Service Manual
33
6 TROUBLESHOOTING
6.1 Display of Error Code
Table 2-6-1 Error Code List
Error Code
Error
E1
Compressor high pressure protection
E2
Freeze protection
E3
Compressor low pressure protection, refrigerant lacking protection, refrigerant
recycling mode
E4
Compressor high discharge temperature protection
E6
Communication malfunction
E8
Malfunction of indoor fan motor
E9
Full water protection
F0
Malfunction of indoor ambient temperature sensor
F1
Malfunction of evaporator temperature sensor
F2
Malfunction of condenser temperature sensor
F3
Malfunction of outdoor ambient temperature sensor
F4
Malfunction of discharge temperature sensor
F5
Malfunction wired controller temperature sensor
C5
Wong dial switch of capacity
EE
Malfunction of outdoor main control memory chip
PF
Malfunction of electric box sensor
H3
Compressor overload protection
H4
Overload protection
H5
IPM protection
H6
Malfunction of DC fan motor
H7
Drive desynchronizing protection
HC
PFC protection
L1
Malfunction of humidity sensor
Lc
Start-up failure
Ld
Compressor phase protection
LF
Power protection
Lp
Models of indoor unit and outdoor unit do not match with each other
U7
Direction changing malfunction of 4-way valve
P0
Drive reset protection
P5
Overcurrent protection
P6
Communication malfunction between main control and drive
P7
Malfunction of drive module sensor
P8
High temperature protection of drive module
P9
Zero-cross protection
PA
AC current protection
PC
Malfunction of drive current
Pd
Sensor connection protection