hot water problem baxi 105e

[craigymac]

hello everyone, i am hoping someone can assist me with the follwing problem:

I have a baxi 105e combi and the story begins.............

1) Little or no heat to radiators
2) Hot water to taps ok

I was told that I needed a new pump fitted which should sort my problem, £100 later no difference. I was then told that I needed the system flushing, £300 later and we have heat to the radiators which is great but I have another problem, if the central heating is on and I turn the taps on at the same time the boiler cuts out pretty much straight away it then reignites and keeps cutting out? I have looked at the pins coming out of the diverter valve and they both seem to be touching the microswitches? If I turn the hot water supply off to the boiler (underneath) The boiler stays on constantly and the CH is fine, as soon as I open the hot water valve up the boiler cuts out again! Anyone got any ideas or seen this before???? PS I am not a plumber but a bit sick of this now. Thanks in advance and sorry if the above doesnt make any sense.

 

[Billy Bob Bob]

gas pressures or a blocked plate heat exchanger if no one local can fix it baxi do a fixed price repair check there website for details

 

[PowerFlushAssoc]

Most likely that the sludge got pushed into the diverter valve / plate heat exchanger. It has to be removed and flushed out or replaced.
The diverter valve can simply be purged while the heat exchanger it out, to get it clean.
Removing and cleaning the secondary / plate heat exchanger is not considered as part of a standard power flush and classed as an optional extra.

 

[fastnova]

this is not the model with the pre heat hot water is it? I agree with the secondary plate heat exchanger scaled or maybe a temp sensor?