Error code
Viessmann nem alma cihazı All models code 20
No approved translation for this record yet; showing the original text.
Meaning
Raising the set boiler water or flow temperature by 20 % when chang- ing from operation with reduced room temperature to operation with standard room temperature. See example on page 114 (only for weather-compensated control units)
Member details
Signed-in members see the LED pattern and how to read the code with the remote control on eligible records.
View details as a memberPossible causes
FA:0 to FA:50
Solution
Solution steps are not shared for faults that may be dangerous.
No do-it-yourself solution is given for this fault. For your safety, call an authorised service.
Remote technician support
Get help from a technician over a video call.
Address of this page: https://www.remfixit.com/tr/viessmannnemalmacihazi/tum-modeller/20