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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.
The boiler detects a flame where there shouldn't be one. Causes, checks, and when to seek technical help.
The boiler locks out when it tries to start. These are the real causes and the safest response.
The boiler goes into protection mode if the temperature does not respond to the effort. Here’s how to read the warning and understand its real significance.
The boiler shuts down as a safety measure when the temperature becomes excessive. Here's how to interpret the fault and its actual scope.
The air alarm locks the boiler for safety. Here are its causes, signs and useful checks you can carry out without opening the unit.
The lockout points to the gas control or the electronics. Key points for interpreting it and checking it properly.
The message usually points to an SCU detection, connection or adjustment fault and requires a precise technical inspection.
The warning reveals altered hydraulic flow and requires checking the pump, valves, and circuit direction before shutting down the boiler.
The flame appears, but the boiler doesn't validate it: key points to understand the fault and act safely.
The boiler shuts down due to insufficient flow: low pressure, air, a stopped pump, or closed valves.
The warning indicates a communication failure in the control system and usually requires a technical inspection of the installation.
The M20 message usually refers to a brief automatic purge. Here are its causes, duration, and warning signs.