How much does it cost to fix Remeha error code 43?

Typical repair cost for the Remeha 43 fault is £150-300 including labour.

43 High

Remeha 43 Fault Code

Q: What does the Remeha 43 fault code mean?

Your boiler's internal computer has detected that its programmed settings are outside of the required limits, meaning it has safely shut itself down to prevent operational errors.

The Remeha 43 fault code means: your boiler's internal computer has detected that its programmed settings are outside of the required limits, meaning it has safely shut itself down to prevent operational errors.. It appears on 7 Remeha models in our database.

Technical description: Parameters out of reach

Typical repair cost £150-300 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Remeha models that show the 43 fault code

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

Source

Remeha 43 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 31 August 2026