How much does it cost to fix Remeha error code 975?

Typical repair cost for the Remeha 975 fault is £100-350 including labour.

975 Medium

Remeha 975 Fault Code

Q: What does the Remeha 975 fault code mean?

Your boiler has temporarily stopped operating because it has detected a specific sequence of internal signals that don't match its safety checks.

The Remeha 975 fault code means: your boiler has temporarily stopped operating because it has detected a specific sequence of internal signals that don't match its safety checks.. It appears on 2 Remeha models in our database.

Technical description: The boiler carries out a control stop (reducing temperature display)

What causes the Remeha 975 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.

Typical repair cost £100-350 (including labour)

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

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Remeha models that show the 975 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Remeha 975 fault code information on this page is sourced and cross-checked against the official Remeha service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026