BoilerFaultCodes
Buderus Boiler Fault Codes
16 fault codes across 1 Buderus boiler models — explained in plain English.
Buderus (Bosch Group) domestic condensing boilers.
Buderus fault codes on this site
We document 16 fault codes across 1 Buderus model, covering 16 distinct codes. Buderus boilers use plain numeric codes such as 8Y, 2E, 3A. Codes for 1 of these models are taken directly from the manufacturer's own service or installation manual. Buderus is a smaller name in the UK market, and if you own one this is likely one of the few places its fault codes are collected in one place.
Models covered: 600-28C.
Just want the most common Buderus problems?
The top 8 faults across the whole Buderus range — causes, DIY checks, repair costs.
High-severity Buderus fault codes
8Y 2E 3A 3P 3Y
Your boiler has paused because a safety switch related to your underfloor heating has detected a problem or has been disconnected.
600-28C
Your boiler has stopped working because the water pressure is too low for it to operate safely.
600-28C
Your boiler has stopped working because the main control board is unable to talk to or control the fan.
600-28C
Your boiler has stopped working because the fan that clears exhaust gases is not spinning at the correct speed to keep the system safe.
600-28C
Your boiler has detected that the internal fan is spinning at the wrong speed, which prevents the unit from safely starting the combustion process.
600-28C
All models
1 Buderus boiler models
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