Diagnosis And Troubleshooting - Viessmann Vitotronic 200 KW2 Operating Instructions Manual

What to do if ...
Troubleshooting
If your heating system has developed a fault, it will be displayed and
indicated through the flashing red fault lamp (see page 6).
You can read off the fault code on the display by scanning and notify your
heating contractor accordingly.
Fault
Tu
w
Press the following keys:
1. c for fault diagnosis.
Example
Boiler sensor
U
U
Fault display
Fault number
Sensor description
Plug description
Interruption
or
Short circuit
32
º C
A
1 38
2. d for "Acknowledge".
Acknowledge? Yes
3. a/b for "Yes" or "No".
With "Acknowledge? Yes"
you confirm that you have
noted the fault.
4. d for confirmation.
Please note:
If the fault has not been rectified, the
fault message will be displayed
again at 7.00 hrs the following day.
The red fault display flashes until the
fault has been rectified.