Vaillant VRC 630, Operating Manual

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Installation Instructions VRC 630 0020095108_00
Troubleshooting 9
9.4 Overview of error codes
Example of an error message:
Wed 02.12.09 15:43 -3 °C
Com. Error boiler
HK1 Heating 22.0°C
Storey 1 Eco 18.0°C
Cylinder Auto 60.0°C
VRC 630
Error message Cause
VR 60 (4) comms error
or
boiler connection missing There is no communication with
the VR 60 mixer module at bus
address 4.
Information displayed:
– the affected component
– the unreachable address
– an indication that communica-
tion is interrupted
– the bus cable is not connected
– no power is present,
– the component is defective.
Boiler fault A boiler is reporting a malfunction
via the eBUS
See the manual for the boiler
VRC 630 VF1 fault
VR60 (4) VFa fault,
VIH-RL sensor T1 error,
VPM W (1) sensor T1 error,
... The VF1 inlet sensor is defective.
Information displayed:
– the affected component
– the affected sensor with its desi-
gnation on the ProE connector
strip
Possible causes:
– a break ???
– a short circuit on the affected
sensor.
HK2 temperature error The target temperature for hea-
ting circuit HK2 has not been rea-
ched after a defined time.
This time is set in Menu C11:
Parameter "Temp. fault detection
after";
Setting range: OFF, 0 - 12 h
Default setting: OFF.
When combined with a VIH-RL, the following errors can be dis-
played:
External current anode
fault The external current anode moni-
toring in the VIH-RL has detected
a fault.
VIH-RL Limescale in heat
exch. The VIH-RL electronics have
detected that the heat exchangers
need to be serviced.
Table 9.1: Error codes and causes
Further error codes and descriptions of their causes and
remedies can be found in the manuals for the compo-
nents of the heating installation.