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Content Remarks
E0 1 Water flow fault(E8 displayed 3 times)
E1 2 Phase loss or neutral wire and live wire are connected Only applies to 3-phase models
Communication fault between controller and hydraulic
E3 4 Final outlet water temp. sensor(T1) fault Sensor T1
E4 5 Water tank temp. sensor(T5) fault Sensor T5
The condenser outlet refrigerant temperature sensor(T3)
E6 7 The ambient temperature sensor(T4) fault Sensor T4
E7 8 Buffer tank up temp. sensor(Tbt1) fault Sensor Tbt1
E9 10 Compressor suction temp. sensor (Th) fault Sensor Th
EA 11 Compressor discharge temp. sensor (Tp) fault Sensor Tp
Eb 12 Solar temp. sensor(Tsolar) fault
Ec 13 The balance tank low temp. sensor(Tbt2) fault Sensor Tbt2
Ed 14 The plate exchanger water inlet temp. sensor(Tw_in) fault Sensor Tw_in
The main control board of hydraulic module EEPROM
P0 20 Low pressure protection
P1 21 High pressure protection
P3 23 Compressor overcurrent protection
P4 24 Compressor discharge temp. too high protection
P5 25
High temperature difference protection between water
inlet and water outlet of the plate heat exchanger
P6 26 Inverter module protection
Displayed on user interface when any
of L0, L1, L2, L4,L5, L7, L8 or L9
occur
Pb 31 Anti-freeze mode protection
Pd 33
High temperature protection of refrigerant outlet temp. of
condenser
PP 38
Water inlet temperature is higher than water outlet in
heating mode
H0 39
Communication fault between main control board of
hydraulic module and main control board PCB B
H1 40
Communication fault between inverter module PCB A and
main control board PCB B
H2 41
The plate exchanger refrigerant outlet(liquid pipe) temp.
sensor(T2) fault
Sensor T2
H3 42
The plate exchanger refrigerant outlet(gas pipe) temp.
sensor(T2B) fault
Sensor T2B
H4 43 Three times L0/L1 protection
H5 44 Room temp. sensor(Ta) fault Sensor Ta
H7 46 Main circuit voltage protection fault
8.1.3 Error code
Unit
Register
address
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