Medium
E31 on Alpha Evoke 10 / 18

Your boiler has lost its connection to your thermostat or remote timer, meaning it cannot receive instructions to turn on.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

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

Loss of remote control communication

DIY fix possible

Check if the batteries in your room thermostat or remote control need replacingEnsure the wireless receiver or router is switched on and plugged inTry resetting the boiler by turning the selector switch to 'R' for a few seconds

Find a Gas Safe engineer
Search the official register →

Related guides you might find useful

Boiler won't turn on — 9-step checklist

Work through these before the call-out.

Read →

Yellow or orange flame — CO safety

Safety-critical — turn off, read this.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →