Gree GWHD(18)NK3FO - Page 64

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Installation and Maintenance
Service Manual
1.3 Error Description
If some error occurs when the unit is running, the error code will be displayed on the wired controller and the main board
of
the outdoor unit.See the table before for more details about the meaning of each error.
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
High Discharge Temp
Protection
E4 Flash 4 times / / E4 E4 Outdoor
Communication Error E6 Flash 6 times / / E6 E6
Outdoor &
Indoor
Indoor Unit Water Full
Error
E9 Flash 9 times / / E9 E9 Indoor
Refrigerant Recovery
Mode
Fo
Quick
Flashing
Quick
Flashing
/ Fo Fo
Special
Mode
Outdoor Ambient
Temp Sensor Error
F3 / Flash 3 times / F3 F3 Outdoor
Outdoor Mid-Coil
Temp Sensor Error
F4 / Flash 4 times / F4 F4 Outdoor
Outdoor Discharge Air
Temp Sensor Error
F5 / Flash 5 times / F5 F5 Outdoor
Oil Return for Cooling F7 / / / / /
Special
Mode
Forced Defrosting H1
Quick
Flashing
/ / H1 H1
Special
Mode
Oil Return for Heating
or Defrosting
H1 / / Flash once H1
Special
Mode
Compressor Overheat
Protection
H3 / / Flash 3 times H3 H3 Drive Error
IPM Protection H5 / / Flash 5 times H5 H5 Drive Error
Motor
Desynchronizing
H7 / / Flash 7 times H7 H7 Drive Error
PFC Error Hc / / Flash 6 times Hc Hc Drive Error
Startup Failure Lc / / Flash 11 times Lc Lc Drive Error
DC Fan motor Error LA / / / / / Outdoor
No indoor fan motor H6 Flash 11 times / / / / Indoor
Compressor phase
circuit detection error
U1 / / Flash 12 times / / Outdoor
DC link voltage drop
error
U3 / / Flash 20 times / / Outdoor
Zero detection circuit
error
U8 Flash 17 times / / / / Outdoor
Phase Loss Ld Flash 3 times Flash 3 times Flash 3 times Ld Ld Drive Error
Compressor Stalling LE Flash 3 times Flash 3 times Flash 3 times LE LE Drive Error
Over-Speed LF Flash 3 times Flash 3 times Flash 3 times LF LF Drive Error
IPM Reset P0 Flash 3 times Flash 3 times Flash 3 times P0 P0 Drive Error
Compressor Current
Protection
P5 / / Flash 15 times P5 P5 Drive Error
Communication Error
between the Inverter
Drive and the Main
Controller
P6 Flash 16 times / / P6 P6 Drive Error
Radiator Temp Sensor
Error
P7 / / Flash 18 times P7 P7 Drive Error
Radiator Overheat
Protection
P8 / /
Flash 19
times
P8 P8 Drive Error
Table 3