Gree GWHD(18)NK3FO - Page 65

63
Installation and Maintenance
Service Manual
AC Contactor
Protection
P9 Flash 3 times Flash 3 times Flash 3 times P9 P9 Drive Error
Current Sensor Error Pc / /
Flash 12
times
U1 Drive Error
Sensor Connection
Protection
Pd Flash 3 times Flash 3 times Flash 3 times Pd Pd Drive Error
Over Voltage
Protection
PH / Flash 11 times / PH PH Drive Error
Low Voltage
Protection
PL / / Flash 21 times PL PL Drive Error
Temp Drift Protection PE Flash 3 times Flash 3 times Flash 3 times PE PE Drive Error
Drive Board Ambient
Temp Sensor Error
PF Flash 3 times Flash 3 times Flash 3 times PF PF Drive Error
AC Current Protection PA Flash 5 times / / E5 E5 Drive Error
Charging Circuit Error PU / / Flash 17 times PU PU Drive Error
AC Input Voltage
Anomaly
PP Flash 3 times Flash 3 times Flash 3 times PP PP Drive Error
Unit communication
error
See
Table 5
Flash 6 times / / E6 E6 Indoor
Unit n indoor pipe
midway temperature
sensor error
See
Table 5
/ Flash twice / E2 E2 Indoor
Indoor Evaporator
Temp Sensor Short/
Open-Circuit
See
Table 5
/ Flash twice / F2 F2 Indoor
(Air Valve) Unit n
indoor unit pipe outlet
temperature sensor
error
See
Table 5
/ Flash 22 times / b7 b7 Indoor
(Liquid Valve) Unit
n indoor pipe inlet
temperature
sensor error
See
Table 5
/ Flash 19 times / b5 b5 Indoor
Unit n mode
See
Table 5
/ Flash once / F1 F1 Indoor
See
Table 5
Flash 7 times / / E7 E7 Indoor
The error codes for wall mounted type unit are shown in the following tableb):
Error Item
Outdoor
Unit 88
Display
Indicating LED Flashing Times
88
Display
Wired
Controler
Display
Error Type
Running
LED
Cooling
LED
Heating
LED
High Pressure
Protection
E1 Flash once / / E1 E1 Outdoor
Shutdown for Whole
Unit Anti-Freeze
Protection
E2 Flash twice / / E2 E2
System
Error
Low Pressure
Protection
E3 Flash 3 times / / E3 E3 Outdoor