63
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
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