Kaysun KEM-30 DNS3, Owners & Installation Manual

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Table 11-2 KEM-90 DNS3
Error
No.
Code reason note
1 E0 Main control parameter memory EPROM failure Recovered upon failure recovery
2 E1 Phase sequence failure of main control board check Recovered upon failure recovery
3 E2 Main control and wired control communication failure Recovered upon failure recovery
4 E3 Total water outlet temperature sensor failure (main unit valid) Recovered upon failure recovery
5 E4 Unit water outlet temperature sensor failure Recovered upon failure recovery
6 E5
1E5 condenser tube temperature sensor T3A failure Recovered upon failure recovery
2E5 condenser tube temperature sensor T3B failure Recovered upon failure recovery
8 E7 Ambient temperature sensor failure Recovered upon failure recovery
9 E8
Power supply phase sequence protector output failure
(reserved)
Recovered upon failure recovery
10 E9 Water flow detection failure (recovered through button)
Protection occurs 3 times in 60 minutes and the failure
can be recovered by power disconnection only.
12 Eb
1Eb-->Taf1 cooling evaporator low-temperature antifreeze
protection sensor failure
Recovered upon failure recovery
2Eb-->Taf2 cooling evaporator low-temperature antifreeze
protection sensor failure
Recovered upon failure recovery
13 EC auxiliary unit module reduction Recovered upon failure recovery
14 Ed
1Ed-->A system discharge temperature sensor failure Recovered upon failure recovery
2Ed-->B system discharge temperature sensor failure Recovered upon failure recovery
15 EE
1EE EVI plate heat exchanger refrigerant temperature T6A
sensor failure
Recovered upon failure recovery
2EE EVI plate heat exchanger refrigerant temperature T6B
sensor failure
16 EF Unit water return temperature sensor failure Recovered upon failure recovery
17 EH System self-check failure alarm Recovered upon failure recovery
19 EP Discharge temperature sensor failure alarm Recovered upon failure recovery
20 EU Tz/7 Coil final outlet temperature sensor error Recovered upon failure recovery
21 P0
System high-pressure protection or discharge temperature
protection
Protection occurs 3 times in 60 minutes and the failure
can be recovered by power disconnection only.
22 P1 System low pressure protection
Protection occurs 3 times in 60 minutes and the failure
can be recovered by power disconnection only.
23 P2 Tz/7 Coil final outlet temperature too high Recovered upon failure recovery
25 P4 System A current protection
Protection occurs 3 times in 60 minutes and the failure
can be recovered by power disconnection only.
26 P5 System B current protection
Protection occurs 3 times in 60 minutes and the failure
can be recovered by power disconnection only.
27 P6 Module failure
Protection occurs 3 times in 60 minutes and the failure
can be recovered by power disconnection only.
28 P7 High temperature protection of system condenser
Protection occurs 3 times in 60 minutes and the failure
can be recovered by power disconnection
30 P9 Water inlet and outlet temperature difference protection
Protection occurs 3 times in 60 minutes and the failure
can be recovered by power disconnection
32 Pb Winter antifreeze protection Recovered upon failure recovery
33 PC Evaporator pressure low in cooling Recovered upon failure recovery
35 PE Cooling evaporator low temperature antifreeze protection Recovered upon failure recovery
37 PH Heating T4 too high temperature protection Valid for heating
38 PL Tfin module too high temperature protection
Protection occurs 3 times in 100 minutes and the failure
can be recovered by power disconnection only.
40 PU
1PU-->DC fan A module protection Recovered upon failure recovery
2PU-->DC fan B module protection Recovered upon failure recovery
3PU-->DC fan C module protection Recovered upon failure recovery
46 H5 pressure too high or low Recovered by power disconnection
50 xH9 Drive model not matched
x indicates the compressor: 1 indicates compressor A,
and 2 indicates compressor B.