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Question About Honeywell Thermostat CT3400A1007
Our display is blank. Replaced batteries and chec...

Our display is blank. Replaced batteries and checked for fuse issues. I pressed the small button on the bottom left to light the display to see the temperature. It lit up for a second only and then the display went blank. Our downstairs heat is working. This is the upstairs unit. Concerned about heat through the night. What should we do?

Asked by Elizabeth on 11/24/2014 0  Answer

ManualsOnline posted an answer 9 years, 5 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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