When you move the pin up and down you can hear like air bubbles I know you have a diaphragm underneath but it should sound more like a squelch. It is very hard to describe to be honest. Also the boiler is 17 years old been serviced every year but this part has never been touched. As you can see...
Terrywookfit
Thanks for your advice, removed the CH micro switch and yes the diaphragm underneath has gone, so removed the four screws that hold it in place but am unable to remove cap I think it is stuck in place when made at the factory and I do not feel confident in trying to get it off. I...
I have a small diaphragm it came with the flow switch diaphragm.
I had know idea where it went but now you have said that have checked it and it would fit under the ch thermistor housing. So will tackle it in the Morning if I have any problems will give you a shout.
Regards
Ian
The only problem is when heating is on and you draw hot water the light starts flashing and the central heating goes off. So I have to reset every time Hot water is drawn
Have a wickes 102 combo boiler
The green power light is flashing. Have read the work shop manual for fault finding.
Both hot water and central heating work but not both together ( if heating on and you draw hot water light flashes but not the other way round)
Have changed water flow switch
Both...