S.23 Low
Your boiler is currently going through the normal steps to light the flame and start heating your home.
Technical description: Ignition sequence
Typical repair cost: £0 (including labour)
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
Protect yourself from future repair bills
A boiler cover plan would cover faults like S.23 — no call-out fees, no surprises.
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