M thermal Mono
202005 77
Part 3 - Installation and Field Settings
11 Error Code Table
Table 3-10.1: Error code table
High temp. protection of inverter module
Water flow fault (E8 displayed 3 times)
Phase loss or neutral wire and live wire are connected reversely (only for three phase unit)
Communication fault between controller and main control board of hydraulic module
Final outlet water temp. sensor (T1) fault.
Water tank temp. sensor (T5) fault.
The condenser outlet refrigerant temperature sensor (T3) fault
The ambient temperature sensor (T4) fault.
The balance tank up temp. sensor (Tbt1 ) fault.
Compressor suction temp. sensor (Th) fault.
Compressor discharge temp. sensor (Tp) fault
Solar panel temp.sensor (Tsolar) fault.
The balance tank low temp.sensor(Tbt2) fault
The plate exchanger water inlet temp. sensor (Tw_in) fault.
The main control board of hydraulic module EEPROM fault.
DC bus low voltage protection
Communication fault between main control board of hydraulic module and main control board PCB B(Main control
board of unit)
Communication fault between inverter module PCB A(Inverter module) and main control board PCB B(Main control
board of unit)
The plate exchanger refrigerant outlet (liquid pipe) temp. sensor (T2) fault
The plate exchanger refrigerant outlet (gas pipe) temp. sensor (T2B) fault.
Three times P6 protection
Room temp.sensor (Ta) fault
Main circuit voltage protection fault
Zone 2 water flow temp. sensor (Tw2) fault.
The plate heat exchanger water outlet temperature sensor (Tw_out) fault.
Three times “PP” protection and Tw_out<7℃
Communication fault between master unit and slave unit (in parallel)
Communication fault between indoor unit and Ta / room thermostart transfer PCB.
Inverter module board EE PROM fault
H6 displayed 10 times in 120 minutes.
Low pressure protection (Pe<0.6) occured 3 times in 1 hour in cooling mode
Compressor overcurrent protection
Compressor discharge temp. too high protection
High Temperature difference protection between water inlet and water outlet of the plate heat exchanger.