To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Honeywell M9185D 1004 Modutrol
Can anyone tell me how to troubleshoot a Honeywell M9185D Modutrol with a T991A Potentiometer controller?
It runs a Honeywell modulating water valve for a heat recovery unit in a nursing home. The valve stopped modulating. I can open it by jumping the 24 volt Red to Blue, it will open the valve. I got the manual off the Internet but it doesn't tell me how to troubleshoot/test it electrically. I understand how it works, just not how to test it.