water loop.
Clean the water filter to keep a good water quality. Lack of water and dirty water
can damage the unit.
Keep the unit in a place where it is dry and clean, and which has good ventilation.
Clean the heat exchanger every one to two months.
Check each part of the unit and the pressure of the system. Replace the defect part
if there is any and recharge the refrigerant if it is required.
Check the power supply and the electrical system, make sure the electrical com-
ponents are good, and the wiring is well. If there is a damaged part or a strange
smell, please replace it in time.
If the heat pump is not used for a long time, please drain out all the water from the
unit and seal the unit to keep it good. Please drain the water from the lowest point
of the boiler to avoid freezing in winter. Water recharge and full inspection on the
heat pump is required before it is restarted.
Do not turn the power ‘OFF’ when you use the unit continuously, or the water in the
pipe will freeze and split the pipe.
Keep the unit clean by means of soft damp cloth, no maintenance is required by
the operator.
It is recommended to clean the tank and e-heater regularly to keep an efficient
performance.
It is recommended to set a lower temperature to decrease the heat release, prevent
scale and save energy if the outlet water is sufficient.
Clean the air filter regularly to keep an efficient performance.
TROUBLESHOOTING
This section provides useful information for diagnosing and correcting certain troubles
which may occur. Before starting the troubleshooting procedure, carry out a thorough
visual inspection of the unit and look for obvious defects such as loose connections or
defective wiring.
Before contacting your local dealer, read this chapter carefully, it will save you time and
money.
WHEN CARRYING OUT AN INSPECTION ON THE SWITCH BOX OF THE UNIT, AL-
WAYS MAKE SURE THAT THE MAIN SWITCH OF THE UNIT IS SWITCHED ‘OFF’.
The guidelines below might help to solve your problem. If you cannot solve the prob-
lem, consult your installer/local dealer.
No image on the controller (blank display). Check if the main power is still con-
nected.
One of the error codes appears, consult your local dealer.
The scheduled timer does work but the programmed actions are executed at the
wrong time (e.g. 1 hour too late or too early). Check if the clock and the day of the
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