Frost Protection Function; Troubleshooting; Detecting And Eliminating; Faults - Vaillant aroSTOR VWL B 270/5 Betriebsanleitung

4.12 Frost protection function

Note
The product is protected by the
frost protection function. The hot
and cold water circuit is not protec-
ted by the product.

5 Troubleshooting

5.1 Detecting and eliminating

faults

Danger!
Risk of death caused by im-
proper repair work
▶
If the power supply cable is
damaged, never replace this
yourself.
▶
Contact the manufacturer,
customer service or a simil-
arly qualified person.
This section shows all of the fault mes-
sages that can be rectified without seeking
help from the competent person in order to
start up the product again.
Eliminating faults (→ Page 56)
▶
Ensure that the product generally works
without any problems and that no fault
messages or alarms are displayed.
▶
If the product still does not function after
the fault has been eliminated, contact
your competent person.
54

6 Maintenance and care

6.1 Maintenance

An annual inspection and maintenance
of the product carried out by a compet-
ent person is a prerequisite for ensuring
that the product is permanently ready and
safe for operation, reliable, and has a long
working life.

6.2 Caring for the product

▶
Clean the casing with a damp cloth and
a little solvent-free soap.
▶
Do not use sprays, scouring agents,
detergents, solvents or cleaning agents
that contain chlorine.
6.3 Checking the condensate
discharge pipe and tundish
The condensate discharge pipe and tun-
dish must always be penetrable.
▶
Regularly check the condensate dis-
charge pipe and tundish for faults and,
particularly, for blockages.
You must not be able to see or feel any
obstructions in the condensate discharge
pipe and tundish.
▶
If you notice a fault, have it eliminated
by a competent person.

7 Decommissioning

7.1 Temporarily decommissioning
the product
▶
If, during long periods of absence, the
power supply to the dwelling and to the
product is interrupted, have the product
drained by your competent person or
have it sufficiently protected against
frost.
Operating instructions 8000015877_00