Question about Plumbing
Please check the link for troubleshooting:
2 wire zone valve: http://www.white-rodgers.com/wrdhom/pdfs/06_Cat_pages/Cat_06_pg0299.pdf
3 wire zone valve: http://www.white-rodgers.com/wrdhom/pdfs/06_Cat_pages/Cat_06_pg0298.pdf
If the valve fail the test you must change the motor head.
Also chcek the wiring of your thermostat to the zone valve.
I hope this information help. :)
Posted on Oct 10, 2009
This problem has to be in the way the valve was wired. Wrong zone valve-Normally open instead of normally closed-power interuption causing valve to open. Faulty T-stat/ Most likely wired incorrectly.
Posted on Sep 13, 2009
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Posted on Jan 02, 2017
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