I have established that boiler wasn't firing up as no current from the microswitch in the motorized valve.
I also notice that when the valve is opened manually, the microswitch isn't triggered; only when the valve is opened by the motor does it travel that little bit further to trigger the microswitch.
Having never examined one of these before, I have no idea is the above description is correct or if it is a fault - should manually opening the valve, trigger the m/switch?
The synchron motor turns, although I havent checked it under load. It turns very slowly however, maybe 5-8 rpm ?. I am at a loss as to what stops the motor turning, does it keep the power on continuously whilst the valve is open and 'slip' somewhere or does the microswitch cut power to the motor at the same time as it supplies power to the boiler?
Anyway, what i really want to know is do I replace the motor, the powerhead or the entire valve?
Any thoughts anyone. Cheers
I also notice that when the valve is opened manually, the microswitch isn't triggered; only when the valve is opened by the motor does it travel that little bit further to trigger the microswitch.
Having never examined one of these before, I have no idea is the above description is correct or if it is a fault - should manually opening the valve, trigger the m/switch?
The synchron motor turns, although I havent checked it under load. It turns very slowly however, maybe 5-8 rpm ?. I am at a loss as to what stops the motor turning, does it keep the power on continuously whilst the valve is open and 'slip' somewhere or does the microswitch cut power to the motor at the same time as it supplies power to the boiler?
Anyway, what i really want to know is do I replace the motor, the powerhead or the entire valve?
Any thoughts anyone. Cheers