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8. Troubleshooting Guide
Type of failure
No hot water
No heating
Water not warm enough
Safety valve (SV) is dripping
Leak warning outlet is dripping
Possible cause
No power supply to the water
Heater.
The fuse or safety cut-off to operate.
Heating element or internal electrical
wiring out of order.
Heating element or the internal
electrical wiring partially out of order.
Water expands when heated. If there
is no consumption of hot water over a
period of time pressure builds up,
causing the safety valve to open.
The heating element may not be
properly tightened, or there may be a
leak.
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Diagnostic and what to do
Check if there is any power on the
power supply terminal on the
thermostat.
Press the reset button.
Check if there is any power on the
power supply on the connector of
the heating element. If this OK, press
the reset button on the fuse/safety cut-
off.
Adjust the thermostat up using a std.
screwdriver.
Check the resistance of the heating
element on the connector of the heater
bundle, and the condition of the internal
wiring.
If drip from the SV is severe it might
need to be replaced. Some dripping is
normal. Alternatively an expansion
vessel can be fitted.
Check the heating element o-ring seal
and all connections.
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