Discuss baxi duo tec in the Plumbing Jobs | The Job-board area at PlumbersForums.net
does the burner modulate? whats the flow temp like compaired to the return? is the return filter blocked?
how do i access it,can i isolate then remove or is it a drain down,nothing in mi.....will do regarding fga...taits fitted to the return iso valve also check fga settings
i'll have a look tommorrow ta...on a different boiler fitting a worcester junior i 28kw,it came with a low nox chip, whats the benefits with lowering nox levels if any...?turn off RH return side iso if it has a built in loop crack the nut bolted to the iso and bleed into a bowl then remove the nut filters behind it if theres no built in loop it will be a silver cap
less harmful pocs into the environmenti'll have a look tommorrow ta...on a different boiler fitting a worcester junior i 28kw,it came with a low nox chip, whats the benefits with lowering nox levels if any...?
why the choice ,why not fitted as standard,..strange.less harmful pocs into the environment
i went back to this boiler and gas was fine co% 8.7 all good,the boiler when first knocked on runs fine until temp is reached ,then it just cycles constantly,down stairs is in 15mm on flow and return, upstairs is in 8mm and on all rads the flow is red hot and the return is cool,could this be due to a blockage on the main return pipework,and could the ch ntc be faulty causing these symptomsnot sure dont fit worcesters just fix them when they die,leak,blow up etc
yes filter okdid you clean the filter? thermister does not point to this
yes rf stat baxi's ownhas it got a external room stat?
pump seems fine,i do think it could be a blockage,is it common for diverter to stick, and why would every thing appear to be ok until temp is reached,can ntc fail at set temp and work again in a time period of 10 secondsi would try bypassing this for testing reasons,also take the resistance (cold) of the thermister but i dont think its this its coming back to a sticking dv,blocked return or pump issue the dv,s on these you can remove the bush and spindle,clean them, grease up with silicone grease and refit
its not that common for the dv,s unless the systems dirty to stick not had a thermister fail in this way but worth recording its resistance,i assume you have checked custards not knocked a iso off by mistakepump seems fine,i do think it could be a blockage,is it common for diverter to stick, and why would every thing appear to be ok until temp is reached,can ntc fail at set temp and work again in a time period of 10 seconds
yeah mate,i don't assume or take anything for granted any more,i'll let you know how it progressesits not that common for the dv,s unless the systems dirty to stick not had a thermister fail in this way but worth recording its resistance,i assume you have checked custards not knocked a iso off by mistake
by the way this is a combi 40he....been back today and as you put it i still hav'nt cracked it,when the boiler as reached temp rather than modulate down the fan stops and the gas stops,boiler goes out,ntc ok,co2% ok on max and min,flow and return on boiler ok,rads upstairs all the flows are hot and all the returns are coolno probs its only a boiler we can crack it
i did ,it was ok,i have arranged a sservice as it's not had one since installi would be looking at the pump now worth taking it out and checking the impeller
could well be the problem here i thinkgot a phone call this morning, the boiler will not work,code e119 low system pressure,the gauge is showing above 1 bar,obvious a faulty gauge,got me thinking that the system is dirty and has blockages
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