Maintenance And Faults Handling; Common Problems; Unit Maintenance; Faq (Frequently Asked Question) - EAS Electric E300WHF User Manual

6.2 Unit Maintenance

The unit is only open and repaired by assigned agency or maintenance agency. Any damages caused by
unauthorized dismantling will end the warranty.
1. Our household Air-Source Heat Pump Water Heater can work well in a range of -7℃~46℃.
2. Standard components have to been used according to instructions and not replaceable.
3. For better and reasonable usage，the recommended outlet-water temperature is 50℃ in winters and
43℃ in summers.
4. Regularly cleaning dust on evaporator and filter by professional mechanics ensures efficient operation.
5. While maintaining, make sure the safe use of electricity. The heater is turned on only after the faults
have been eliminated.
6. Check the power supply frequently to ensure that the power plug and socket are in good and reliable
contact, well grounded and no overheating;

6.3 FAQ (Frequently Asked Question)

6.3.1 Normal Operation but temperature not up

1. Fan runs but compressor does not---Check the wires connect compressor.
2. Refrigerant leaks—Check the connecting lines and add refrigerant after repair.
3. Thick frosting on evaporators in winter—Check defrosting system, the outlet blockage and leaking
possibilities.

6.3.2 Blank screen of Controlling Panel

1. Check the power supply.
2. Transformer breaks down-Replace it.
3. The signal line breaks down—Check the line.

6.3.3 Safety valve leaks

1. Inlet and outlet leaks—tighten the screws on the inlet or outlet.
2. External drainpipe leaks—Check the water pressure of tap water, install a pressure-reducing valve if
necessary.
6.3.4 P/T valve
6.3.5 Magnesium anode
1. Replace the magnesium anode regularly according to the local water quality.
2. Make sure checking and replacing the magnesium anode at least every two years.
6.4 Fuse: If need change fuse, the fuse model is 5*20_3.15A/250VA
V.2

6. Maintenance and Faults Handling


Don't dismantle

Don't press on the handle

Don't block the outlet

The valve has to be pulled out half a year in case of blocking. Avoid
scalding by the hot water from the outlet.

Drainpipe should be lead to an open area.
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