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Danv44444
I have a fault code f75 on the above boiler. I need to check the water pressure sensor. does anybody know what the resistances should be? cheers guys.
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Don't bother get the F75 kit from vaillant it basically relocates the switch to stop this problem, port can be partially blocked too, clean to get going.....about 3-4 year old boilers i dont pig about with them just swap them over usually sorts it
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