Fault Codes - Viessmann Vitocrossal 300 Service Manual

Troubleshooting

Fault Codes

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Vitocrossal 300 CU3A 26 to 57 Service
In the event of a fault, red fault indicator A flashes. "
flashes on the display and "Fault" is shown.
The fault code is displayed with OK. For an explanation
of the fault code, see the following pages.
For some faults, the type of fault is also displayed in
plain text.
Acknowledging a fault
Follow the instructions on the display.
Note: The fault message is transferred to the standard
menu. A fault output device (e.g. light, buzzer
etc.), if connected, will be switched OFF. If an
acknowledged fault is not remedied, the fault
message will be re-displayed the following day
and the fault output device restarted.
Calling up acknowledged faults
Select "Fault" in the standard menu.
The current faults will be displayed in a list.
Calling up fault codes from the fault memory (fault history)
The 10 most recent faults (including resolved ones) are
saved and can be called up.
Faults are sorted by date.
1. Press OK and simultaneously for approximately
4 seconds
2. "Fault history"
3. "Display?"
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