Light on Low
Your boiler is working normally and is currently heating your home or water as requested.
Technical description: Heating demand on boiler is OK
Typical repair cost: £0 (including labour)
DIY fix possible
No action is required as this is a status indicator, not a fault.If the light is on but your radiators are cold, check that your room thermostat is turned up.Ensure your programmer or timer is set to an 'on' period.
Protect yourself from future repair bills
A boiler cover plan would cover faults like Light on — no call-out fees, no surprises.
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