D.0 Low
Your boiler is currently restricted to a lower power setting for heating, meaning your radiators might take longer to warm up or may not get as hot as they should.
Technical description: Heating part load error
Typical repair cost: £0-80 (including labour)
DIY fix possible
Check if any radiator valves are turned off or restrictedMonitor if the home reaches the desired temperature over a longer periodNo immediate action is required if your home remains comfortable
Protect yourself from future repair bills
A boiler cover plan would cover faults like D.0 — no call-out fees, no surprises.
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Parts commonly replaced
- None
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