Brand > Type > Error code > 0Y 277

Error code: 0Y 277

Cause The safety part of the bi-sensor or the safety sensor has measured a current central heating water temperature that is higher than 95 °C.

Allow the boiler to cool. Fill the boiler to 1.8 bar. Bleed the boiler and central heating system.

Please note: depending on the type of boiler, it is equipped with a safety sensor or a bi-sensor.

Other symptoms:

The desired room temperature may not be reached.

Possibly no hot tap water.