Help understanding why boiler keeps coming on
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Help understanding why boiler keeps coming on

Author Michael M...
Registered
#1 | Posted: 18 Apr 2020 16:44  
Hi,

We've relatively recently bought a house with a DDC420 controller and are struggling to understand some of it's behaviour and wondered if anyone could help. The main problem at the moment is that the boilers seem to fire even when there shouldn't be any demand on them. An example from today, we've had the system on frost mode override to try and have things off but we still keep seeing the boilers running and you can see from the flow temp graph attached that it keeps turning on to keep the flow temp at target despite no demand for hot water or heating (system in frost mode and it isn't anywhere near freezing).

It feels like we are wasting a lot of oil, we've ended up turning off a lot of the 'smart' adaptive features to try and figure out what is going on and then possibly build up back from there but I cannot figure out why the boiler is going on without apparent demand, is this something wrong with the boiler and not the controller perhaps? I think it is on now but the boiler section of the web-controls isn't showing either boiler as 'green' which I interpret to mean the controller is not currently asking for a boiler to fire.




Author Michael M...
Registered
#2 | Posted: 18 Apr 2020 16:46  
More screen shots attavched




Author Dene M...
Registered
#3 | Posted: 30 Apr 2020 07:36 | Edited by: Dene Matthews  
Hello - please call 0800 844 3100 and access the support line for support on this and we can help. It looks as though your boiler is running outside of the demands of the controller on it's own conviction. We will certainly try to help identify the issue.

You can also email us at info"at'syxthsense.com

Change 'at to @'

Look forward to hearing from you
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