Your boiler is perfectly healthy and is simply waiting for a signal from your thermostat or timer to start heating up.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Standby: there is no heat demand from control system.
DIY fix possible
Check that your heating timer or programme is currently set to be 'ON'Turn your room thermostat up higher than the current room temperatureEnsure your hot water cylinder thermostat is calling for heat if you have one
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 0 — no call-out fees, no surprises.
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Remeha Quinta 85 is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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