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Find clear guides to boiler error codes, common faults and everyday problems, with simple steps to pinpoint the cause and fix it faster. Save time with practical help that explains what each warning means and how to act without guesswork. Ideal when you need a quick, easy solution and want to get your boiler working again.
A configuration fault in the PSU board leaves the boiler without a clear response and requires specialized technical inspection.
The boiler is protected against overheating: causes, safe tests, and signs that a technical inspection is needed.
Temperature lockout at the outlet usually comes from poor circulation, low pressure, or a faulty pump.
The alert indicates an imbalance between outbound and return flow; checking flow rate and pressure is usually key.
The fault indicates an open RL input in the PCU and usually requires technical inspection.
The B09 fault usually indicates an internal power supply or circuit board problem and requires technical inspection.
The warning indicates an open input on the control board and requires a technical inspection.
The warning is usually related to a lack of communication between electronic control boards and requires technical inspection.
The boiler indicates insufficient pressure: how the warning works, what the threshold is, and how to reset the system.
The boiler warns of insufficient gas pressure and requires checking the supply, adjustment, and safety.
The boiler indicates a SU card recognition failure and requires checking the module compatibility.
Fault B17 usually indicates a parameter alteration on the electronic board and requires technical inspection.