Thread: How to test a wall thermostat to see if it's actually working?
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Danny D'Amico Danny D'Amico is offline
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Default How to test a wall thermostat to see if it's actually working?
On Tue, 10 Dec 2013 16:42:11 -0500, Stormin Mormon wrote:

SM: Should be 24 VAC. May be as high as 28 VAC, but that's rare.

I got 27 VAC at a whole bunch of those connections.

The problem was I wasn't sure which *two* points to choose in
order to test and debug why the heat wouldn't go on.

For example, I test VAC from the RED wire to what?
I test VAC from the WHITE wire to what?
etc.

Is there a ground on this thing?

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