BoilerFaultCodesYour boiler has temporarily stopped operating because it has detected a specific sequence of internal signals that don't match its safety checks.
This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.
Technical description: The boiler carries out a control stop (reducing temperature display)
What causes this fault?
This fault occurs when the boiler's internal computer detects a communication error or an illogical sequence of signals during its safety start-up checks. The most common reason is an electronic glitch or a failing control board that can no longer accurately process the data required to run the unit safely.
DIY fix possible
Press the Reset button for two secondsCheck that your external heating controls or room thermostat are calling for heatEnsure the boiler's power supply has not been interrupted
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 975 — no call-out fees, no surprises.
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Remeha Quinta 30 is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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