Reply to "Trouble on the Tracks - ZW Controller Problem"

@SteveH posted:

Madlove,  Here are some clarifying questions:

1) When you measure 18VAC at the A terminal, where is the other Meter probe connected?

2) When measuring the 18VAC in "the On and Off position, do you mean the Throttle?

3) When you say the Common posts appear to be ok, how did you make this determination, please include details of meter connections and meter settings?

Hi Steve

1. The other meter probe was on the common post directly above A.
2.  Yes, I meant the throttle.

3. I determined all the other posts were working by interchanging the common posts while contacting B C & D. For example, D worked fine while making contact with all four of the common posts. Same for B and C. The results for A were the same when I tried the other 3 common posts, so I’m assuming something is wrong with just the A post path.
All the readings were 18 volts, including the wacky one for A.