4. Failure code
NO.
Display
1
E3
No water protection
2
E5
Power supply excesses operation range
Excessive temp difference between inlet and outlet water(Insufficient water flow
3
E6
protection)
4
Eb
Ambient temperature too high or too low protection
5
Ed
Anti-freezing reminder
NO.
Display
1
E1
High pressure protection
2
E2
Low pressure protection
3
E4
Phases lack protection (three phase model only)
4
E7
Water outlet temp too high or too low protection
5
E8
High exhaust temp protection
6
EA
Evaporator overheat protection (only at cooling mode)
7
P0
Controller communication failure
8
P1
Water inlet temp sensor failure
9
P2
Water outlet temp sensor failure
10
P3
Gas exhaust temp sensor failure
11
P4
Evaporator coil pipe temp sensor failure
12
P5
Gas return temp sensor failure
13
P6
Cooling coil pipe temp sensor failure
14
P7
Ambient temp sensor failure
15
P8
Cooling plate sensor failure
16
P9
Current sensor failure
17
PA
Restart memory failure
18
F1
Compressor drive module failure
19
F2
PFC module failure
20
F3
Compressor start failure
21
F4
Compressor running failure
22
F5
Inverter board over current protection
23
F6
Inverter board overheat protection
24
F7
Current protection
25
F8
Cooling plate overheat protection
26
F9
Fan motor failure
27
Fb
Capacitor no charging protection
28
FA
PFC module over current protection
For installers and professionals
Not failure description
Failure description
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