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Its the best I can explain TBH. Loud chugging sound when CH fires up and when DHW being used. Its in my sons bedroom so it wakes him as its that loud. The system is about 10 yrs + I think. Was gunna throw some Fernox in to see if that helps. Any suggestions would be much appreciated...

I did originally insert a ring on the actual collar but had difficulty fitting the clips back on?? I took the HE out and looked inside & could see a perished Rubber O ring. I replaced this with a standard 17mm x 2.5mm O ring purchased from local garage for 30p each. I put a little bit of...

A Heads up would be appreciated Guyz. The Microswitch seems to be operational when drawing off water.ie push pin opens/shuts when water is on/off. But DHW stays hot for 30 secs then stone cold altho Temp Lights show 80C. Am I right in thinking renew DHW Thermister.??? And Are these...

ChrisR...I would consult manual if I had one.. when I did source and consult an online manual a thermister is not mentioned anywhere. But consulting my crystal Ball I now see that a Temperature Sensor is actually a Thermister ... and low and behold I can now locate the little fella...

Hi Dollydoodah, I have the EXACT same problem. Can you please tell me what was done to rectify this situation... Kindest Regards Tony email me please ********see profile Thanking You In Anticipation

How easy is it to fit this "Thermistor" ??? & where is it located on boiler. Many Thanx :D

Domestic hot Water Fine.. But CH fires up Hits 80C in 5 secs & trips out until temp drops to min 30C & then fires up again(3 mins later approx) then hits 80C in 5 secs...trips.... & repeats this cycle???

Engineer checked for blockage in filter..seems ok... Fitted DiverterValve Unit....Still No Hot Water to Rads... Drained system & refilled.... Still NO Hot Water to Rads... Any ideas would be appreciated...Thanx