THERMEx Sierra Manual De Instrucciones página 8

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ы
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.
These faults are not defects of EWH and shall be fixed by the consumer or by a
specialized organization at his own expense.
In case of failure to fix problems using the above recommendations or in case of
others problems revealing you should contact the authorized service center listed in the
operation manual.
8
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 ac-
tuated 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 ther-
mal switch until you hear a click
install the cover and turn on the
power