Installation - for contractors
12. Shutting down
» Isolate the appliance from the power supply by
means of the fuse/MCB in your fuse box or by pulling
the power cable plug from the socket.
» Drain the appliance (see chapter "Maintenance").
13. Troubleshooting
Problem
Cause
The appliance will not
The aerator in the tap
start despite the DHW
is scaled up or dirty.
valve being fully open.
The flow rate is set
too low.
The sieve in the cold
water line is blocked.
The heater is faulty.
The safety pressure
limiter has responded.
The required tem-
The appliance is at its
perature is not being
output limit.
reached.
40
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Remedy
Clean and/or descale
the aerator or replace
the special aerator.
Increase the flow rate.
Clean the sieve after
shutting off the cold
water inlet line.
Check the resistance
of the heating system
and replace the appli-
ance if required.
Remedy the cause of
the fault. Isolate the
appliance from the
power supply and de-
pressurise the water
line. Activate the safe-
ty pressure limiter.
Reduce the flow rate.
LED indicators
1
2
3
1 Illuminates red in the case of a fault
2 Illuminates yellow during heating operation
3 Flashes green if the PCB is receiving power