23
Notes:
E-heater open-circuit error means that IEH (Current difference E-heater on and off) <1A.
Notes:
When the EF code checked by query function is displayed, the unit can work well without clock-memory.
It is needed to reset clock when power put on again.
If some normal error happen, unit will automatically shift to E-heater for emergent SHW supply;
please contact qualified staff to repair.
If some errors happen, the buzzer will buzz 3 times every other minute and the
icon will flash
fast. Press CANCEL for 1 sec to stop the buzzer, but the alarm icon will keep glittering.
EE
EF
Ed
