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[wat5190]

Once a motorised valve has powered up and moved the valve from hot water to central heating should the motor stop running and lock in position bare in mind the spring tension against it, or should it carry on running to keep the spring tension valve in the correct postition. Why would power stay going to it and keep the motor running???

Any help would be appreciated Rob Watson

 

[Jimbob]

yes, 3 port valves hold open on heating side until hot water is called for again, that is how they are supposed to operate.

 

[quality]

Syncron motors are what they call impedance protected hence they dont get melting hot and set on fire when they are stalled / stopped like a normal induction motor would.

 

[Jimbob]

intresting, although this topic seems to be going on, on 2 seperate posts