94
When heat pump capacity is not enough, or heat pump meets a failure, indoor PCB will turn ON
the internal heater automatically.
However, if the indoor PCB itself is broken, one can obey the following instructions to turn ON
the heater manually:
1
2
Switch ON the switch K1 inside the unit,
as shown in below picture.
Emergency switch K1
Mechanical
thermostat
Unscrew three screws on top, and lift the front
panel up by around 20mm, then remove the
front panel.
8. Electric Heater
6
3
30℃
52℃
75℃
Close
30℃
5
2
℃
75℃
Set the needed water temperature by turning
the knob of the mechnical thermostat, so to
control the water temperature.
Note:
The control temperature range for the
mechnical thermostat is 30~75
℃
.If the knob
of mechnical thermostat is set between 30
and75
℃
, the mechnical thermostat is ON.
If the knob of machnical thermostat is set
below 30
℃
, the mechnical thermostat is OFF.
Note:
After problem solved, please don't forget to turn
the switch K1 to OFF position, otherwise electric
heater will keeps on working if actual water
temperature is lower than the set value of the
mechnical thermostat.
Please insert the hooks of the front panel to the
holes as shown in the picture, then fix the front
panel by fasten three screws on top.
5
4
After the emergency switch is set to ON, heat pump
power supply will be switched to the last 3kW. If the
water temperature is lower than what is set via the
digital thermostat, all 3 sets of 3kW heater will be
started at the same time, so to have balanced 3 phase
9kW electric heater as the heating source.
Please use this "emergency switch" when heat pump
breaks down, and set it back to "OFF" once the heat
pump unit is OK.
3KW:
Electric heater 3
3KW: AH
3KW: HBH