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Protection & Failure code
NO.
Display
1
2
3
4
5
NO.
Display
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
E3
No water protection
E5
Power supply excesses operation range
Excessive temp difference between inlet and outlet water(Insufficient water
E6
flow protection)
Eb
Ambient temperature too high or too low protection
Ed
Anti-freezing reminder
E1
High pressure protection
E2
Low pressure protection
E4
3 phase sequence protection (three phase only)
E7
Water outlet temp too high or too low protection
E8
High exhaust temp protection
EA
Evaporator overheat protection (only at cooling mode)
P0
Controller communication failure
P1
Water inlet temp sensor failure
P2
Water outlet temp sensor failure
P3
Gas exhaust temp sensor failure
P4
Evaporator coil pipe temp sensor failure
P5
Gas return temp sensor failure
P6
Cooling coil pipe temp sensor failure
P7
Ambient temp sensor failure
P8
Cooling plate sensor failure
P9
Current sensor failure
PA
Restart memory failure
F1
Compressor drive module failure
F2
PFC module failure
F3
Compressor start failure
F4
Compressor running failure
F5
Inverter board over current protection
F6
Inverter board overheat protection
F7
Current protection
F8
Cooling plate overheat protection
F9
Fan motor failure
Fb
Power filter plate No-power protection
FA
PFC module over current protection
Protection code description
Failure code description
17
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