Originally Posted by 1idejim
I took a call from a friend in Texas this week, 24 vac, but he also had 180 ohms resistance from the controller.
It wasn't me but I have been asked to troubleshoot a 100+ zone two-wire system installed in phases by several of the crappiest installers around.
One part of me says:
The other part says:
And of course the non-part of me says: