Select a fault code
No ignition within safety period — gas supply or ignition system fault.
Heat exchanger or primary circuit overheating — low flow, pump fault, or blocked heat exchanger.
Fan not running or not reaching correct speed.
System pressure below minimum operating level.
Condensate pipe blocked or frozen, preventing drainage.
Return temperature sensor open circuit or short circuit.
Protect against future repair bills
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Prices shown are indicative — actual cost depends on your boiler age and policy type.
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