GM V5 Compact Series VRF Outdoor Unit
30
Phase-lacking of inverter compressor
PE
P0
PE
Drive charging circuit malfunction of compressor
PF
P0
PF
Demagnetization protection
PU
P0
PU
Communication malfunction between indoor unit and
outdoor unit, indoor unit’s wires controller
C0
C0
C0
Communication malfunction between main control and
inverter compressor driver
C2
C2
C2
Phase-lacking protection of power
U3
E0
U3
Malfunction of fan
H0
H0
H0
6.3.2 Error Code of Limited Frequency Reduction for Protection
Error Item
Code
Display
Limited frequency reduction for high pressure protection
FA
Only the outdoor unit displays
the code
Limited frequency reduction for low pressure protection
FH
Limited frequency reduction for discharge temperature protection
F9
Limited frequency reduction for AC current protection
F8
Limited frequency reduction for power protection
FC
Limited frequency reduction for IPM temperature protection
FL
6.3.3 Operation Code
Operation
Code
Display
Trail run
A0
Both units display the code
Fluorine recycle
A2
Defrosting
A3
Oil return
A4
Testing online
A5
Vacuumization
A8
Test module
SS
Only the outdoor unit displays the code
Note: Last ten records of protection shutdown or limited frequency reduction for protection can be searched
through the debugging controller.