Medium
F 0t on Ideal INDEPENDENT COMBI2

Your boiler is failing to communicate with your wall-mounted thermostat, which is preventing it from knowing when to turn the heating 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.

What the manual says

Manufacturer manual

Room Thermostat Fault: Check Room Stat & connections

Shared across the INDEPENDENT COMBI2 range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check if your thermostat requires new batteries and replace them if necessaryEnsure your thermostat is switched on and within signal range of the boiler receiverTurn the boiler off at the fused spur for 60 seconds and then back on to reset the connection

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Related fault codes

F 01View →L 01View →

All 29 fault codes on the INDEPENDENT COMBI2

Seeing a different code? Every code this model can display, in one place.

dUF 0CF 02F 03F 04F 04 or L 04F 05F 05 or L 05F 06F 07F 09F 10F 12F 13F 14F 15F 16F 17F0UF01L 0CL 0dL 02L 04L 05L 06L01L2

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