Midea MHC - V18W/D2RN8 - Error Code Table

M thermal Mono
202005 77
Part 3 - Installation and Field Settings
11 Error Code Table
Table 3-10.1: Error code table
Error code
Content
2
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 hydraulic 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
P4
Compressor discharge temp. too high protection
P5
High Temperature difference protection between water inlet and water outlet of the plate heat exchanger.
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