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6 Maintenance and repair
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6 Maintenance and repair
6.1 Maintenance
Vaillant VEN electric storage water heaters are designed
to require virtually no maintenance. All internal
components are protected from external influences. It is
sufficient just to wipe down the VEN unit occasionally
with a damp cloth – with a little water and mild
detergent if required. The appliance should be serviced
every three years. This procedure must only be carried
out by an authorised service installer. Note that more
frequent servicing (descaling) may be required if the
appliance is used in a hard-water area.
Danger!
Electrical hazard: the appliance must always
be disconnected from the mains power supply
before repairs or servicing are carried out.
6.2 Inspections
Furring can occur with water of certain types and with
certain water temperatures and levels of consumption.
In the case of open appliances, this can lead to an
increase in pressure and – in extreme circumstances – to
irreparable damage to the appliance. Regular inspection
and descaling will prevent this happening. If the water
flow-rate drops noticeably, have the power-supply and
water-inlet components examined – and the VEN unit
descaled – by an authorised service installer.
6.3 Troubleshooting
In the event of a fault occurring, disconnect the VEN
unit immediately by unplugging it from the mains power
supply. Have the fault rectified by an authorised service
installer only.
6.4 Spare parts
Please refer to our current catalogue for further details
of any spares that you may require.
Information is also available from members of our
dealer network and our direct Customer Service
Department.
The power connection lead must only be exchanged for
a new Vaillant-supplied replacement.
Spare-part no.:
255 784 for VEN classic and VEN exclusiv
VEN 5/5 classic; VEN 5/5 exclusiv
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