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06-03-14, 08:42 AM
Replies: 4
Views: 955
Posted By PJmax

It can be a little tough to measure voltage on Y...

It can be a little tough to measure voltage on Y and C (at the t'stat) with the thermostat on the wall or off. If it's on you can't get to the terminals. If it's off then there won't be any voltage...
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