Question about Heating & Cooling
First check the batteries if the T-stat has batteries.
You then locate the fuse on the control board and see if it is blown. You will also want to check for 24V coming out of the transformer. If you do not have 24 V there, but you are getting high voltage TO the transformer, you need a new transformer.
You can check for voltage at the thermostat as well.
Posted on Oct 06, 2009
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Posted on Jan 02, 2017
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