M thermal Mono
34 202008
Midea M thermal Mono
3 Error Code Table
Table 4-3.1: Error code table
Error code Content
bH PED PCB fault
C7 High temp. protection of inverter module
E0 Water flow fault (E8 displayed 3 times)
E1 Phase loss or neutral wire and live wire are connected reversely (only for three phase unit)
E2 Communication fault between controller and main control board of hydraulic module
E3 Final outlet water temp. sensor (T1) fault.
E4 Water tank temp. sensor (T5) fault.
E5 The condenser outlet refrigerant temperature sensor (T3) fault
E6 The ambient temperature sensor (T4) fault.
E7 The balance tank up temp. sensor (Tbt1 ) fault.
E8 Water flow fault.
E9 Compressor suction temp. sensor (Th) fault.
EA Compressor discharge temp. sensor (Tp) fault
Eb Solar panel temp.sensor (Tsolar) fault.
Ec The balance tank low temp.sensor(Tbt2) fault
Ed The plate exchanger water inlet temp. sensor (Tw_in) fault.
EE. The main control board of hydraulic module EEPROM fault.
F1 DC bus low voltage protection
H0
Communication fault between main control board of h
ydraulic module and main control board PCB B(Main control
board of unit)
H1
Communication fault between inverter module PCB A(Inverter module) and main control board PCB B(Main control
board of unit)
H2 The plate exchanger refrigerant outlet (liquid pipe) temp. sensor (T2) fault.
H3 The plate exchanger refrigerant outlet (gas pipe) temp. sensor (T2B) fault.
H4 Three times P6 protection
H5 Room temp.sensor (Ta) fault
H6 DC fan motor fault.
H7 Main circuit voltage protection fault
H8 Pressure sensor fault.
H9 Zone 2 water flow temp. sensor (Tw2) fault.
HA The plate heat exchanger water outlet temperature sensor (Tw_out) fault.
Hb
Three times PP protection and Tw_out 7
Hd Communication fault between master unit and slave unit (in parallel)
HE Communication fault between indoor unit and Ta / room thermostart transfer PCB.
HF Inverter module board EE PROM fault
HH H6 displayed 10 times in 120 minutes.
HP
Low pressure protection Pe<0.6 occured 3 times in 1 hour in cooling mode
P0 Low pressure protection
P1 High pressure protection
P3 Compressor overcurrent protection
Table 4-3.1: Error code table (continued)
P4 Compressor discharge temp. too high protection
Midea CAC
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