Installation
13
11.3 Recommissioning
!
Material losses
Following an interruption of the water supply, recom-
mission the appliance by carrying out the following
steps, in order to prevent irreparable damage to the
bare wire heating system.
» Isolate the appliance from the power supply. Pull the
power cable plug, if present, from the socket, or re-
move the fuse/reset the MCB.
» See chapter „Initial start-up“.
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
Remedy
The appliance will not
start despite the DHW
valve being fully open.
The aerator in the tap
is scaled up or dirty.
Clean and/or descale
the aerator or replace
the special aerator.
The sieve in the cold
water line is blocked.
Clean the sieve after
shutting off the cold
water inlet line.
The heater is faulty.
Check the resistance
of the heating system
and replace the appli-
ance if required.
14. Maintenance
DANGER Electrocution
Before any work on the appliance, disconnect all
poles from the power supply.
14.1 Draining the appliance
DANGER Scalding
Hot water may escape during the draining process.
If the appliance needs to be drained for maintenance or to
protect the whole installation when there is a risk of frost,
proceed as follows:
» Close the shut-off valve in the cold water inlet line.
» Open the draw-off valve.
» Undo the water connections on the appliance.