Low
d5 on Remeha Avanta 28c

Your boiler has temporarily paused heating because the radiators have already reached the requested temperature, but the thermostat is still asking for heat.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

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.

What the manual says

Manufacturer manual

Control stop: set flow temperature (t1) has already been reached and the heating demand still exists (3 till 10 minutes).

Shared across the Avanta Plus range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check your room thermostat to see if it is set to a comfortable temperature.Wait 10 to 15 minutes to see if the boiler automatically restarts once the water cools down.Ensure your radiator valves are fully open so heat can circulate away from the boiler properly.

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Related fault codes

d4View →d6View →1View →

All 22 fault codes on the Avanta 28c

Seeing a different code? Every code this model can display, in one place.

89d8d9é0E01é1é2é3é4é5é6é7é8é10é11é13é43é44é45OT ERROR

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