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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My thermostat is not registering any info. I have changes

Customer Question

My thermostat is not registering any info. I have changes the batteries several times.
TH51110D1006 1207 It's a Honeywell that's about 10 years old.
Submitted: 20 days ago.
Category: HVAC
Expert:  Phil replied 20 days ago.

Hello, if you have the technical skills to check for 11-19volts AC from the red wire attached to the thermostat and the frame of the unit we can determine if there is a blown fuse inside the air handler/ furnace etc or if the thermostat has gone bad.

Let me know about that, we can go from there.

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