BoilerFaultCodesBaxi OFF OFF OFF Fault Code
Also written as OFFOFFOFF — same fault.
The Baxi OFF OFF OFF fault code means: your boiler is not receiving any electricity and has completely powered down.. It appears on 4 Baxi models in our database.
Technical description: No power
What causes the Baxi OFF OFF OFF fault?
This fault occurs when the boiler's electrical supply is completely cut off, preventing the control system from functioning. The most common reasons are a tripped circuit breaker in your fuse box, a blown internal fuse on the boiler's circuit board, or a failure of the printed circuit board itself.
DIY fix possible
Check if your home has had a power cut or if a fuse has tripped in your main consumer unit.Ensure the boiler's isolation switch (usually a white fused spur near the boiler) is turned on.Check if your prepaid gas or electricity meter has run out of credit.
Find a Gas Safe engineer
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Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like OFF OFF OFF: no call-out fees, no surprise bills.
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Baxi models that show the OFF OFF OFF fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi OFF OFF OFF fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026