The spindle is free as a bird and the jb is a small 8 wire exchange local to the 3port.
Thanks guys ill just get the drayton ma1 and replace it.
btw, do these microswitches go regular?
Can i change the whole unit by just turning off the programmer and isolating the three ball balves then, or do i have to drain the whole system?
Thanks for the super-swift response btw
Hi,
I have recently moved home and the new house has a y plan system with a potterton boiler, top tank and hot water tank in the airing cupboard. everything was rosy until one day the radiators were not heating but hot water is fine. I researched and this led me to the 3 pos diverter valve...