Troubleshooting And Diagnosis; Error Messages On The Controller - Vaillant geoTHERM VWS Installation Instructions Manual

10 Troubleshooting and diagnosis

10 Troubleshooting and diagnosis
d
Danger!
Troubleshooting and diagnostics mea-
sures may only be carried out by a reco-
gnised expert technician company.
e Danger!
Risk of fatal electric shock from tou-
ching live connections! Before commen-
cing work on the heat pump, disconnect
the power supply (circuit breaker) and
secure it against being switched on
again inadvertently.
10.1

Error messages on the controller

Error messages appear on the display approximately
20 seconds after the error has occurred and are written
to the controller's error memory if the error is present
for approximately 3 minutes. You can call up the error
memory in Menu I1. As long as the fault is present, you
can call up the fault display by turning the left hand dial
1 x to the left, starting from the graphics display.
Error History
Fault number
Fault code
16.02.08 07:18
Error CH circuit
Sensor T3 heat source
Fig. 10.1 Error message in error memory, Menu I1
The geoTHERM control system recognises three diffe-
rent types of malfunction:
– Malfunction of components which are connected via
eBUS.
– Temporary shutdown
The heat pump remains in operation. The error is dis-
played and disappears independently when the cause
of the fault is removed.
– Fault-induced shutdown
The heat pump is shut down. It can only be restarted
by resetting the error after removing the cause of the
fault (see Menu I 1).
– Moreover, other errors/malfunctions can occur on
the unit or system.
70
I1
>1
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Installation instructions geoTHERM VWS 0020046310_01