Chaffoteaux BUBNEB STAYS ON Fault Code

Also written as BUBNEBSTAYSON — same fault.

The Chaffoteaux BUBNEB STAYS ON fault code means: your boiler is failing to light properly because it cannot correctly detect or control the flow of gas, which may cause it to keep trying to fire up when it shouldn't.. It appears on 4 Chaffoteaux models in our database.

Technical description: I) Air in pipework; II) Gas valve stays open; III) Venturi blocked; IV) Dirt on gas valve facing; V) Loose jumper on house stop cock tap; VI) Dirt foreign matter is water section; VII) Slow ignition device stuck