Fault Codes
If the system fails, the fault code display area shows the current fault code.The corresponding
relationship between fault code and fault name is as follows:
Below is the list of the fault code. If the corrective action does not solve the fault problem, a
malfunction of the PCB is likely.
Serial number Fault code Fault name
1 P1 Low pressure fault
2 P2 Over pressure fault
3 P3 Exhaust high temperature protection
4 PP Ambient temperature limit
5 E1 Temperature fault at the bottom of water tank
6 E2 Temperature failure of upper water tank
7 E3 Ambient temperature failure
8 E4 Exhaust temperature failure
9 E5 Return air temperature failure
10 E6 Coil temperature failure
11 EE Data access fault
12 E0 Communication failure
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