Testing zone valves electrically..?

[Matt0029]

Can you test zone valves electrically to find out what may be at fault?

 

[Last Plumber]

Yes.
What do you need to know?
In a typical zone valve, L & N go to the motor and grey is permanent live to the micro switch and orange is the switched live from it. The motor should have an ohms reading through it.

Does that help or do you need a specific answer to something?

 

[Matt0029]

Thanks I want to no how you would test if the motor was at fault?

 

[ShaunCorbs]

It wouldn’t open if brown has 240v then motor fecked need to change the zone valve

 

[Last Plumber]

Thanks I want to no how you would test if the motor was at fault?

You can test the live and neutral to it for 240V. Test both because a live to it won't do anything if there is no neutral.
You can also test the ohms reading through the motor. I cannot remember what it should be but they generally fail completely from my experience so there will be no continuity through the winding.