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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 fault in the secondary flow sensor can stop the boiler and require a thorough inspection of the circuit.
The return sensor or its wiring can leave the boiler without a reading and trigger a lockout.
The fault usually points to the ABM03 board, with the unit locking out and a technical inspection almost always required.
The issue usually points to a fault in the electronic control unit and requires checking the power supply, grounding and control board.
The warning indicates a communication fault between the control board and the gas valve. Here’s how to interpret it and check it properly.
The A61 warning usually points to a fault in the ABM03 control board and calls for a careful technical inspection.
The boiler locks out due to an inconsistent temperature reading: the sensor, wiring or circulation could be behind it.
The fault points to the flow sensor or its signal. Here’s how to interpret it and what to check before calling a technician.
The boiler may lock out because of an internal setting or an inconsistent pressure reading.
The parameter anomaly on the board leaves the boiler without a reliable response and requires a technical inspection.
The lockout points to the fan and its control system: causes, diagnosis, and safe repair, with no beating around the bush.
The boiler enters protection mode due to a repeated anomaly in flue gas evacuation. Here are its causes and useful checks.