3 way valve wiring
- Thread starter nicol
- Start date
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I have a 3 port valve which has stopped moving to mid point and central heating only positions. I have firstly swapped the motor with no success then swapped the valve head complete for an aftermarket one supplied as the replacement.
The original was a honeywell V4073A1039.
The replacement head will now move from HW to mid point but the motor and spring then oscillate back and fourth continually clicking but again not moving to CH on?
So the replacement head unit (wired to match the old one) may be the wrong one or the problem could be electrical possibly from the controller.
So to test is the White wire the one that should be live to move the motor from HW to Mid point then again to CH only? Do I test with a multimeter neutral to neutral blue and the red MM lead to white?
I'm guessing the original Head unit was probaly ok now I've wasted a day trying to fix it!
The original was a honeywell V4073A1039.
The replacement head will now move from HW to mid point but the motor and spring then oscillate back and fourth continually clicking but again not moving to CH on?
So the replacement head unit (wired to match the old one) may be the wrong one or the problem could be electrical possibly from the controller.
So to test is the White wire the one that should be live to move the motor from HW to Mid point then again to CH only? Do I test with a multimeter neutral to neutral blue and the red MM lead to white?
I'm guessing the original Head unit was probaly ok now I've wasted a day trying to fix it!
What you need is a multimeter and the ability to use it safely, and follow this:- View media item 30560
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