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Didn't make it tonight, it's not the sort of customer i am going to at 6pm, not worth the hassle. If they want to wait they can do if not tough.
They phoned me this morning and said it's still playing up, i said reset it and it will fire up - it did. Shouldn't have to keep resetting it, or reset it every time the power has been switched off. I said to her i recommended changing the entire valve but her husband said no. He confirmed this to her when i was on the phone.
When i was there last night he wouldn't even let me take the cover off the boiler to check if there was anything amiss.
Sounds like they have circulation problems if F + R are around the wrong way. Funny how the customer has never touched his boiler but when he has had to drain the system he isolates all the rads rather than drain the whole lot and if his hand didn't shake he would have changed the valve himself.
This 2 port valve, if i slide the lever over and lock it in, you can hear the water circulating and the banging noise is not so bad.
What does that tell you?
Sounds like it may not have been wired correctly originally.
Cant you prepare a quote for ripping the whole lot and starting again, correct flow and returns and wiring and then that will be the end of his woes
If you arrived at a property and the boiler was making a loud banging noise then going to lock out what would be the first things you would check?
Ideally yes but they are adamant everything was working "to a point".
They have said to me that if i can't put it right they want their money back.
if the valve is running in reverse it will bang probably what killed the first valve
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