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In models with drain pipe, it is enough to cut off the flow of cold water into the
EWH, unscrew the drain stub on drain pipe and open hot water tap. Once the water is
discharged, you can open for a while cold water supply in EWH for additional tank
washing.
When conducting EWH maintenance by forces of specialized organization mark
with the seal of organization performing maintenance shall be made in service coupon.
Malfunction
Hot water pressure from
EWH decreased. Cold
water pressure keeps at
the level.
Heating time increased
Frequent tripping of
thermal switch
EWH operates but is not
heating water
Powered EWH does not
heat water. No backlights
of indicator lamps.
All manuals and user guides at all-guidesbox.com
12.
POSSIBLE FAULTS AND REMEDIES.
Possible cause
Clogged inlet safety
valve
THE is covered with a
layer of sludge
Supply voltage decreased
The set temperature is
close to the limit
Thermostat tube is cov-
ered with sludge
Valve (Fig. 1, p.8)
is not closed or out of or-
der
1) no voltage in electric
network;
2) damaged power cord.
3) Thermal switch actu-
ated and not switched on
How to fix
Remove the valve and clean it in
water
Remove the flange and clean the
THE
Contact power main operation ser-
vice
Set lower value of water heating
temperature
Take out the EWH the remova-
ble flange and gently clean the
tube from scale
Close or replace the valve (Fig. 1,
p. 8)
1) Check voltage at the electrical
outlet;
2) Contact a qualified service cen-
ter.
3) Disconnect from the power
supply, remove EWH protective
cover, press the button on thermal
switch until you hear a click (fig.
2) install the cover and turn on
the power
EN
ы
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