Recent content by GreenDave

:P I've just read your e-mail having replaced with a new Potterton Myson ACT322 Actuator from Heating Controls Online (£36.90 inc VAT) today. Previously the recess hole that takes the spindle from the valve body (which in turn moves the valve) wouldn't move electronically when HW or CH or...

Hi there :) . Did you eventually track down a circuit diagram or did you suss out the knitting? I too have a Potterton MVS322 which is stuck in one position (half CH/HW), despite selecting CH only or HW only. First inclination is to replace the controller but it would be nice to confirm it's...