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5.
TROUBLE SHOOTING
Fault
The indicator lamp
does not light up
Water temperature
not as required
Too little / no water
Water lying below
the device
Tap drips when heat-
ing up
Bubbling noises in
the tank
The leakage current
circuit breaker is trig-
gered
The device does not
operate at all
Explanation
No voltage.
Device has reached the set
temperature.
Thermostat set incorrectly.
Water pressure too low.
Stop valve not fully open.
No water.
The device is leaking.
Water pipes are not securely
connected to the device.
Is normal due to the expansion
of the heated water.
Too much calcification.
Too many devices on the safe-
ty group.
If the device no longer operates, check whether the fuse or
the leakage current circuit-breaker has tripped. The hot water
reservoir is equipped with a maximum temperature switch to
ensure your safety. The device will automatically switch off if
excessive heating takes place. When this happens, switch off
the appliance for a few minutes by removing the plug from the
power supply socket and allow the appliance to cool. The ap-
pliance can be reconnected to the mains power supply again
after approximately 20 minutes.
DE GB NL FR
Solution
Check fuse and socket.
No need to do anything.
Change the setting of the
thermostat.
Check whether other cold
water taps have the same
problem.
Open the stop valve.
The device should be turned
off as soon as possible! See
also „The device does not
work."
Notify the place of purchase.
Check the water connections.
No need to do anything.
The device must be de-scaled
by an expert.
Remove some devices from
the group or look for an
empty group.
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