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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have a BesTechBT110D Thermostat. "Lo Bat" appeared on the

Customer Question

I have a BesTechBT110D Thermostat. "Lo Bat" appeared on the display. 2 new batteries (exp. 2016) were installed. (Unlikely that thermostat was switched to OFF beforehand -as suggested in the manual). Now the display screen is blank. No temp readings at all. Unable to control temps nor fan. Cooling stays on unless I switch to off position. Temp goes down to 62 degrees (as shown on external thermometer). Fan stays on -even in "auto" position. Can you advise?
Submitted: 2 years ago.
Category: HVAC
Expert:  mranswer replied 2 years ago.
Replace it as it has failed. This is a very inexpensive, basic thermostat that you can replace with whatever you want.

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