Vaillant aroTHERM VWL 85/2, Инструкция по эксплуатации

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Troubleshooting 6
0020151761_00 aroTHERM Instructions for use
23
6.2 Detecting and rectifying faults
This section shows all of the fault messages that can be rectified without seeking help from the competent person in order to
start up the product again.
Remedy (
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Page 23)
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If the product still does not function after the fault has been rectified, contact your competent person.
Fault Cause Remedy
The product no longer works. The power supply has been disconnected Ensure that there has not been a
power cut and that the product is
correctly connected to the power
supply. When the power supply is re-
established, the product automatic-
ally starts up. If a fault is still present,
contact your competent person.
Noises (hissing, knocking, humming) If the heating demand stops, this may lead to bubbling and whistling noises. These noises are
caused by the coolant.
When the product starts up or stops, this may lead to creaking noises. These noises are caused
by the casing as it expands or contracts when the temperature changes.
If the product is functioning, this may lead to humming noises. These noises are caused by the
compressor when the product is in heating mode.
The product releases steam. In winter and during the thawing procedure, steam may escape from the product. (The heat of
the product melts the ice that has formed.)
Other faults Consult your competent person.