Medium
CH LED on Ideal Boxer

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.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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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.

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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