BoilerFaultCodesRemeha E4 Fault Code
The Remeha E4 fault code means: your boiler's electronic brain has encountered an internal software or hardware glitch and has stopped working for safety.. It appears on 11 Remeha models in our database.
Technical description: Internal control box error
What causes the Remeha E4 fault?
This fault occurs when the boiler's internal computer chips fail to communicate correctly with each other or experience a permanent memory error. It is usually caused by wear and tear on the electrical components over time or a sudden electrical surge that damages the delicate circuitry on the main control board.
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 E4 fault code
Click a model for the full fault code list and model-specific repair notes.
- Avanta 18V Repair: £120-350
- Avanta 28c Repair: £150-250
- Avanta Plus Repair: £120-350
- Avanta Plus 28c Repair: £100-£190
- Avanta Plus 35c Repair: £120-350
- Gas 610 Eco Pro Repair: £120-220
- Quinta 30 Repair: £120-220
- Quinta 85 Repair: £120-220
- Quinta Ace 25 Repair: £250-450
- Quinta Ace 45 Repair: £250-450
- Quinta Ace 65 Repair: £250-450
Source
Remeha E4 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