welldana 34-180139, Installation And User Manual

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For installers and professionals
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4. Failure code
NO. Display Failure description
1 E1 High gas pressure protection
2 E2 Low gas pressure protection
3 E3 No water flow protection (not failure)
4 E4 3 phase sequence protection (only for three phase)
5 E5 Outdoor power supply abnormity protection
6 E6
Excessive temp. difference between inlet and outlet
water(Insufficient water flow protection)
7 E7 Protection of low outlet water temperature
8 E8 Protection of high exhaust temperature
9 E9 Protection of compressor overheat ( reserved)
10 EA Protection of evaporator overheat
11 EB Ambient temperature too high/low protection
12 EC Radiator high temperature protection
13 ED
Two-level antifreeze (not failure, only available when
connecting to heating priority)
14 P0 Controller communication failure
15 P1 Water inlet temp sensor failure
16 P2 Water outlet temp sensor failure
17 P3 Gas exhaust temp sensor failure
18 P4 Evaporator l temp sensor failure
19 P5 Gas return temp sensor failure
20 P6 Heat exchanger temp sensor failure
21 P7 Ambient temp sensor failure
22 P8 Radiator temp sensor failure
23 P9 Current sensor failure
24 PA Restart memory failure
25 F1 Compressor drive module failure
26 F2 PFC module failure
27 F3 Compressor start failure
28 F4 Compressor running failure
29 F5 Compressor module over current protection
30 F6 Compressor module overheat protection
31 F7 Current protection
32 F8 Radiator overheat protection
33 Fb Capacitor No-power protection