Hello,
Hope you can help.
I believe my MPE222 potterton actuator is faulty, I've detached it from the valve. When I turn up stat, the motor whirrs slowly to switch heating on (good), however, when I turn stat down the springs whirrs back quickly back to the open position instead of closed. - (Open is valve lever vertical position, closed is valve horizontal position).
This has caused the heating to be on all the time, no matter whether the programmer is on or stat is turned down. The only way of turning it down, is to turn down the temperature on the system boiler.
I can manually turn the valve by hand to turn the heating off, but then every 15 minutes or so, the Vaillant Thermocompact, switches on for 1 second, then goes off, then goes into water pump overrun status (is this normal behaviour, as I believe the faulty actuator may be sending signals to the boiler, even though the actuator is detached from the valve?).
My question is, if I buy a new actuator ACT 222, will this be calibrated so that off is horizontal, and closed is vertical postion of the valve?
From other posts I've read, it's easy to change an actuator, it'd be a first for me, I understand that, I turn off the mains, unscrew existing, re-attach wires to new one as per old one, re-attach to valve, and Bobs your uncle.
The Corgi person who serviced my boiler who diagnosed this problem as the actuator, said if I buy the actuator, he can fit it for £50.
Hope you can help.
I believe my MPE222 potterton actuator is faulty, I've detached it from the valve. When I turn up stat, the motor whirrs slowly to switch heating on (good), however, when I turn stat down the springs whirrs back quickly back to the open position instead of closed. - (Open is valve lever vertical position, closed is valve horizontal position).
This has caused the heating to be on all the time, no matter whether the programmer is on or stat is turned down. The only way of turning it down, is to turn down the temperature on the system boiler.
I can manually turn the valve by hand to turn the heating off, but then every 15 minutes or so, the Vaillant Thermocompact, switches on for 1 second, then goes off, then goes into water pump overrun status (is this normal behaviour, as I believe the faulty actuator may be sending signals to the boiler, even though the actuator is detached from the valve?).
My question is, if I buy a new actuator ACT 222, will this be calibrated so that off is horizontal, and closed is vertical postion of the valve?
From other posts I've read, it's easy to change an actuator, it'd be a first for me, I understand that, I turn off the mains, unscrew existing, re-attach wires to new one as per old one, re-attach to valve, and Bobs your uncle.
The Corgi person who serviced my boiler who diagnosed this problem as the actuator, said if I buy the actuator, he can fit it for £50.