Post
by proptech »
Sun Nov 16, 2014 7:02 pm
As in your first post you said "hot water priority" and reading what you have copied from the web, I wonder if you've changed like for like, or removed a V4044 valve that would have been on a priority system.
The way the valve works is by using a pair of micro switches, and a diode that, put simply, supplies a DC current to the motor causing it to hold it's position.
The fact that you are getting a ticking says to me that the wiring is not to Honeywell's plan, or there is a defect causing the motor to keep moving, and actuating the switch.
Sorry to say, your diagram doesn't make a lot of sense to me. The only correct diagram is the one supplied with the valve, or obtained from the Honeywell website.
If I was on site, I would once again check, and double check the wiring, and that all other components are functioning as they should. Then, and only then, I would be looking at a valve defect.
Although a dodgy valve can't be ruled out, I would be a little surprised. In my experience 99 out of 100 problems with new valves are not due to the valve itself.