D.23 Low
Your boiler is currently set to summer mode, which means it is only heating your tap water and has temporarily turned off the central heating.
Technical description: Summer/Winter function
Typical repair cost: £0 (including labour)
DIY fix possible
Locate the radiator temperature dial or button on the boiler control panelTurn the dial clockwise or press the '+' button to increase the target heating temperatureCheck that the display no longer shows 'Summer' or the radiator icon with a cross through it
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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