D.23 Low
Your boiler is currently in summer mode, meaning it is only prioritising hot water and will not turn on the radiators.
Technical description: Summer/Winter function
Typical repair cost: £0 (including labour)
DIY fix possible
Locate the radiator symbol button on the control panel.Check if the heating temperature is set to 'Off' or a very low temperature.Increase the heating temperature setting to re-activate the central heating mode.
Protect yourself from future repair bills
A boiler cover plan would cover faults like D.23 — no call-out fees, no surprises.
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