BoilerFaultCodesRemeha 37 Fault Code
The Remeha 37 fault code means: your boiler has stopped working because it cannot correctly measure the temperature of the water returning from your radiators.. It appears on 10 Remeha models in our database.
Technical description: Return temperature sensor failed
What causes the Remeha 37 fault?
This fault occurs when the boiler's internal computer stops receiving a reliable signal from the component that monitors water temperature coming back from your heating system. The most common reason is that the sensor has electronically failed or 'drifted' out of its safe operating range, though it can also be caused by a loose connection or damaged wiring. Because the boiler can no longer safely monitor its own temperature, it shuts down to prevent potential overheating.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Remeha models that show the 37 fault code
Click a model for the full fault code list and model-specific repair notes.
- Gas 610 Eco Pro Repair: £140-£260
- Gas 610 Eco Pro Repair: £140-220
- Quinta 115 Repair: £120-£210
- Quinta 30 Repair: £120-190
- Quinta 30 Repair: £120-220
- Quinta 85 Repair: £150-250
- Quinta Ace 25 Repair: £180-450
- Quinta Ace 45 Repair: £180-450
- Quinta Ace 65 Repair: £180-450
- Selecta Combi Repair: £120-220
Source
Remeha 37 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