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6
MAINTENANCE
• The appliances should be checked and main-
tained periodically by a competent person.
• Check the gas pipe regularly for any defect.
Contact gas safe engineer if you have any
doubt. Always check the gas pipe for leaks or
damage.
• Always check for leaking water.
• Ask qualified technicians to examine the
burner, flue and fan once a year.
• Always check the flame inside the water
heater for any abnormal conditions.
• Keep the cover of the water heater clean.
• This product uses a low water pressure
switch. When the water pressure is lower
than 0.2 bar, the heater cannot be ignited.
• The drain valve will drip when the water pres-
sure is too high, the drain valve will release
the water so as to reduce the pressure to pro-
tect the heater.
• When the heater is supplying hot water to
several points at the same time, the hot water
flow would be reduced, or no hot water will
be delivered at all.
• When the temperature outside is too low and
the exhausted gas meets the cold air, it will
condense as white fog. This is normal.
• When the water temperature is too high, set
to a lower temperature and reduce the wa-
ter tap. If the water temperature outlet is too
high, please open the tap to reduce the tem-
perature.
• When the water temperature is too low, and
the hot water volume is so high so that it ex-
ceeds the heater's heating power, the outlet
water will be not hot enough, please reduce
the water volume.
• In order to ignite immediately, the fan in the
appliance will delay running for a long time
and then stop automatically. This is normal.
• When you use the multi multi-function show-
er, the resistance may be too large, and the
water inlet pressure will be too low or the
water inlet volume will be too little (below
the starting –up water volume), there may
- 28 -
MAINTENANCE
be flameout or can not be ignited, please
choose the suitable shower function.
• The residual water in the heater may be fro-
zen in the winter, this is bad for the heater,
so you must drain the water after use (Please
refer to the drain methods).
• In order not to create scaling, please close the
gas valve after using the heater, let the hot
water out of the appliance. When the outlet
of the hot water is cold, close the cold water
valve.
Cleaning
The water heater should be cleaned annually,
keep the dust away from flue gas passageway.
See the cleaning instructions below (only for
service engineer).
1. Turn off power and shut off the gas supply;
2. Wait for the heater to cool down water
heater;
3. Remove the front cover, by taking out cov-
er screw;
4. Using compressed air or equivalent to
clean the area between the fins and the
heat exchanger;
5. Do not unscrew or move any other parts of
water heater;
6. After Cleaning, put the front cover back.
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