Troubleshooting; Fault Types; Viewing The Error History; Fault With Temporary Warning - Vaillant geoTHERM VWS 220/2 Instrucciones De Operación

5

Troubleshooting

5 Troubleshooting
The start-up of your heat pump was carried out after instal-
lation by your skilled trade company.
A repeated start-up will not even be necessary in the event
that your heat pump disconnects from the mains unexpect-
edly, for example as a result of a voltage drop (power cut,
circuit breaker defective, circuit breaker switched off).
The geoTHERM heat pump has an automatic reset function,
i.e. the heat pump reverts automatically to its starting con-
dition, provided no fault is present in the heat pump itself.
5.1

Fault types

Fault messages appear on the display approx. 20 seconds
after a fault has occurred. If the fault is present for more
than 3 minutes, a fault message is written to the control-
ler's error history.
The geoTHERM control system has various fault types:

– Fault with temporary warning

The heat pump remains in operation and is not shut
down. These warnings first appear in menu
written to the error history if the fault persists for more
than 3 minutes.
– Fault with temporary lock-out
The heat pump is temporarily shut down and restarts
automatically. The fault is displayed and disappears auto-
matically when the cause of the fault is no longer
present or has been eliminated.
– Fault with permanent lock-out
The heat pump is permanently shut down. It can only be
restarted after the cause of the fault has been elimi-
nated by the heating engineer and the fault has been
reset in the error history.
Caution!
b
Improper troubleshooting can cause dam-
age!
In the case of some malfunctions, the heat
pump shuts down.
> In this case, inform your heating engi-
neer or contact Vaillant customer serv-
ices.
> Inform your competent person if mal-
functions which are not described in
these operating instructions occur.
> Do not attempt to remove the cause of
the malfunction yourself.
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5.2

Viewing the error history

Error history
Fault number
Fault code
10.03.10 07:18
Fault
Inlet sensor T3 heat source
5.1 Fault message in the error history of menu I1
You can view the error history in order to display the most
recent fault messages. Only the heating engineer can read
out and delete the error history.
> Turn the
> Turn the
Make a note of the fault code and fault text. When you con-
tact your heating engineer, give him the fault code and fault
text.
1 and are
5.3 Fault with temporary warning
The following warnings are caused by temporary malfunc-
tions in the operation of the heat pump. The heat pump
remains in operation and is not shut down.
> Make a note of the fault code and fault text as well as
the operation mode and weather conditions.
> Mention these notes to the heating engineer during the
next inspection.
Fault code
26
36
(VWS only)
5.1 Fault with temporary warning
dial once to the left.
dial to display further fault messages.
Fault text/description
Compressor outlet overheating
Low brine pressure
Operating instructions geoTHERM 0020051578_03
I1
>1
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