121
19. Error Code
Code
Error code definition
Notes
1
in water temp.sensor(Twi)failure
Restorable
2
out water temp.sensor(Two)failure
Restorable
3
in refrigerant temp.sensor(Thi)failure
Restorable
4
out refrigerant temp.sensor(Tho)failure
Restorable
5
EEPROM failure
Unrecoverable
6
Communication failure with outdoor unit
Restorable
7
communication failure with wired controller
Restorable
8
WS abnormal
Restorable
If it occurs 3 times in an hour, lock the failure
10
Tank water temp.sensor(Ttank)failure
Restorable
11
IO PCB communication failure
Restorable
12
HU zone2 behind water mixing valve temp.sensor failure
Restorable
14
low pressure abnormal
Restorable
15
antifreeze failure
Restorable
If it occurs 3 times in an hour, lock the failure
16
HU in/out water temp. too high
Restorable
17
HU zone1 room temp.sensor failure
Restorable
18
HU zone2 room temp.sensor failure
Restorable
20
Outdoor failure
Hydronic box