Question about Heating & Cooling
Have you checked the battery in the thermostat. In order to work, all electronic thermostats have batteries which need changed periodically. Without the battery the display would not work.
This website should have the service manual for your unit. It will tell you how to check/change the battery.
Thanks for using FixYa and for the generous rating.
Posted on Sep 29, 2010
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Here's a link to this great service
Posted on Jan 02, 2017
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