14
6.1 Faults and fixes
If problems arise when the product is in use,
check for possible faults and fixes in the table. If
the problem is not shown in the troubleshoot-
6. TROUBLESHOOTING
ing table or you are unsure what is wrong, con-
tact the installer (see type plate on the product)
or King Heating Products, see 7.1.
TROUBLESHOOTING
Problem
Possible cause of fault
Possible solution
There is leakage/drip-
ping from the safety
valve/there is often
water on the floor by the
cylinder in the morning
Pressure reduction valve, water me-
ter or blocked non-return valve on
the water intake.
Water pressure into the home is too
high.
Fit expansion vessel with absorbs expansion
during heating, and fit pressure reduction
valve for stable water pressure inside the
home. The pressure reduction valve is ad-
justed in according to the pressure in the
expansion vessel. Contact auth. installer.
The T&P valve is worn or there are
particles stuck between the mem-
brane and the valve seat because
the water is dirty
Try to flush with water through the T&P
valve. Open valve approx. 1 minute. See
section 5.2. If the valve still leaks, it must
be replaced. Contact auth. installer.
Leak from heating elements.
Verify as follows: a) cut the electric supply,
b) unscrew the covers, c) visually check
whether there is a leak from the heating
elements. If so, replace the gasket/heat-
ing element. Contact authorized installer.
No hot water
Power supply interrupted.
Verify that the fuse is on / the earth
breaker has not tripped.
Thermostat(s) has cut out.
Press the ‘RESET’ button on the safety
thermostat(s); see ‘User guide’.
Heating element(s) is defective.
Replace heating element(s). Contact au-
thorized installer.
Leak in hot water pipe
Verify as follows: a) wait 2-3 hours, b)
feel the inlet/outlet combination to see
whether it is hot. If so, there is a leak in
the hot water pipe or elsewhere. Contact
authorized installer.
Not enough hot water
High consumption in the home.
Raise the temperature on the thermo-
stats to 70°C/158°F; see ‘User guide’.
Switch to a larger water heater. Contact
authorized installer.
Not high enough tem-
perature
The thermostats are set for low tem-
peratures.
Raise the temperature on the thermo-
stats to 70°C/158°F; see ‘User guide’.
Change from cold to hot water in
taps.
Contact authorized installer.
Fuse/earth breaker trips
repeatedly
Possible fault in the heater’s electri-
cal system.
Verify as follows: a) cut the electric supply,
b) unscrew the covers, c) visually check the
junction boxes for any problems. If so, con-
tact auth. installer to check. Fit the covers.
Long time before the
water reaches the tap
Long stretch of pipe from water
heater to tap.
Fit circulation loop or heating cable to
HW pipe. Or fit an auxiliary heater by
the tap. Contact auth. installer.
Knocking in the pipes
when the hot tap is closed
Large pressure increase when the
tap is closed quickly.
Completely normal. Fit expansion vessel if
troublesome. Contact auth. installer.
