S.30 Low
Your boiler is working correctly but is currently in a 'waiting' state because your room thermostat is telling it that the house is already warm enough.
Technical description: Room thermostat is blocking heating mode
Typical repair cost: £0-60 (including labour)
DIY fix possible
Check your room thermostat to see if it is set lower than the current room temperature.Turn up your thermostat to a higher temperature to trigger a heat demand.Check if your thermostat batteries need replacing or if the wireless receiver has lost its connection.
Protect yourself from future repair bills
A boiler cover plan would cover faults like S.30 — no call-out fees, no surprises.
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Parts commonly replaced
- Thermostat batteries
- Room thermostat
- External programmer
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