Midea ESG-Inv M Series - Esg-Inv M

ESG-Inv M
33
Part 5 – Diagnosis and Troubleshooting
4 Error Code Table
Error code
Content
bA
Ambient temp. sensor (T4) out of operation range
C7
High temperature protection of inverter module
E0
Water flow malfunction(after 3 times E8)
E2
Communication malfunction between controller and main control board
E5
Air side heat exchanger temperature sensor (T3)malfunction
E6
The ambient temperature sensor (T4)malfunction
E8
Water flow malfunction
E9
Suction temperature sensor(Th) malfunction
EA
Discharge temperature sensor(Tp) malfunction
Ed
Inlet water temperature sensor (TW-in) malfunction
EE
EEprom malfunction
F1
DC bus low voltage protection
F6
EXV1 fault
H1
Communication malfunction between main control board and inverter board
H2
Liquid refrigerant temperature sensor(T2) malfunction
H3
Gas refrigerant temperature sensor(T2B) malfunction
H4
Three times L0 protection
H6
The DC fan malfunction
H7
Voltage protection
H8
HP pressure sensor malfunction
HA
Outlet water temperature sensor (TW-out) malfunction
Hb
Three times PP protection and TW-out below 7 ℃
HF
Inverter module board EE prom malfunction
HH
10 times H6 in 2 hours
HP
Low pressure protection in cooling mode
P0
Low pressure switch protection
P1
High pressure switch protection
P3
Compressor overcurrent protection
P4
Comp discharge temp. too high protection
P5
|TW-out-TW-in| value too big protection
Pb
Anti-freeze mode
PP
|TW-out-TW-in| abnormal protection
Pd
High temperature protection of air side heat exchanger temperature(T3)
L0
Inverter or compressor protection
L1
DC bus low voltage protection
L2
DC bus high voltage protection
L3
Current sampling error of PFC circuit
L4
Rotating stall protection
L5
Zero speed protection
L7
Phase loss protection of compressor
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