Noise - boiler cutting before reaching temp

[Danm]

Hi all.

first post here and not an expert so some of what I describe may not be termed totally accurate but hopefully will give the info so I can pick your collective experts brains on a number of issues which I think could be related...

i have a conventional system. Main 24kw HE boiler, Drayton wireless thermostat/programmer. All rads apart from 2 have trvs.... Hot water cylinder and pump in airing cupboard... Been here for 18 months, boiler is around 2 years old. The pump needed replacing when we moved in and I have had new rads fitted...

- system has always been 'noisy'. I have been able to hear what I can only describe as 'running' or 'gurgling' water in the boiler. I thought that the system would be sealed, so assuming no air meant that I would not be able to hear the water moving about the system so much.

- over the last couple of weeks, each time the boiler has stopped, there has been a 'clunk' from the pump as it has cut out.

- notice over the last few days that even where the thermostat temperature has not been reached, the boiler is stoping, come on 5 minutes later for a minute or so, then goes off again

any pointers you helpful kinds could provide would be very much appreciated.

Dan

 

[lame plumber]

you need to get a heating technician in to check the system over as to why its full of air, leading to boiler overheating and short cycling. then they can fix the issues for you.

 

[JCplumb]

Thought my boiler was kaput a couple of days ago. Drayton programmer like yours and the boiler was acting like it was locking out- put some new batteries in the programmer and now it's all good.
Worth a try.

 

[Dotty]

Job 38.11