7 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Promax Ultra System
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Your boiler has stopped working because it cannot detect enough water inside to safely heat your home.
Your boiler has failed to start because it cannot successfully light or maintain a flame, so it has safely shut itself down to prevent gas buildup.
Your boiler has stopped working because it cannot detect that water is flowing through it properly, so it has shut down to prevent internal damage.
Your boiler has detected a safety issue preventing it from circulating heart or hot water, and it has shut down to protect itself.
Your boiler is not receiving the electrical signal from your thermostat or programmer telling it to turn on.
Your boiler is unable to send power to the water pump, which means it cannot circulate heat around your home and has shut down for safety.
Your boiler is not receiving the electrical signal from your thermostat or timer telling it to turn on.
BoilerFaultCodes