baxi 105he

[ianmcd]

try a new primary NTC

https://www.ebay.co.uk/itm/Baxi-Tem...224440?hash=item4d468e7ab8:g:nioAAOSwKJtaoRJJ

 

[sean ryan]

Will do thanks

 

[sean ryan]

Just fitted new Ntc still the same

 

[ianmcd]

Try cleaning the heating return filter, here is a video showing you how, but be aware the bloke in the video gets the flow and return the wrong way round, the return is on the right hand side as you look at the boiler, your boiler is over heating

 

[sean ryan]

I'll give it a go another boiler drain down

 

[sean ryan]

Cleaned the filter out still the same

 

[ianmcd]

have seen worse, give it a good scrub

 

[sean ryan]

Done it re fitted same result it sounds like the pump is running all the time

 

[ianmcd]

@gas112 fancy jumping in on this one mate

 

[gas112]

from everything being cold do all those lights come on when heating selected? (sensor you changed it was the one in dry pocket you changed and not the other one? )

 

[sean ryan]

Both the sensors have been changed here is a video taken from cold

https://youtube.com/shorts/_RV1SPlP0Gw

 

[gas112]

just to clarify hot water working perfectly ok .
check this first The black knobs for for flow and return are fully open and not just turning on spindles
with nothing on is the pin on the FRONT diaphragm fully retracted back into housing or is it sticking out a bit but not reaching the microswitch (pic if possible)

 

[sean ryan]

Ok thanks will check all when I get home later and hot water is fine

 

[gas112]

Ok thanks will check all when I get home later and hot water is fine

cheers , one other question do you have any of the hot water pipes buried in concrete or under suspended floors on ground floor

 

[sean ryan]

I believe the pipe works all under laminate floors here's a pic of the pin it's slightly out but not reaching the micro switch and the valves were ok