CH LED Medium

Ideal CH LED Fault Code

Also written as CHLED — same fault.

The Ideal CH LED fault code means: your boiler is struggling to receive the signal to start your central heating, possibly because it is not being told to turn on by your timer or thermostat.. It appears on 1 Ideal model in our database.

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: If not illuminated, check selector switch, programmer, room stat, and thermistor resistance.
Typical repair cost £100-250 (including labour)

DIY fix possible

Check that your heating timer or programmer is set to 'On' and the current time is correct.Ensure your room thermostat is turned up high enough to demand heat.Check your boiler's control dial is set to the heating position.

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Ideal models that show the CH LED fault code

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

Source

Ideal CH LED fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026