How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Airheatman Your Own Question
Airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 7538
Experience:  Furnace, A/C and heat pump specialist.
Type Your HVAC Question Here...
Airheatman is online now
A new question is answered every 9 seconds

I just changed batteries in my thermostat. The LCD display

Customer Question

I just changed batteries in my thermostat. The LCD display is not in full view. Help.
JA: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?
Customer: Something related to the changing of the batteries. I used 2 dbl A, alkaline as instructed and my equipment was fine prior to this change.
JA: Do you plan on doing the work yourself?
Customer: Provided it is something simple.
JA: Anything else we should know to help you best?
Customer: I don't think so.
Submitted: 11 days ago.
Category: HVAC
Expert:  Airheatman replied 11 days ago.

What is model on thermostat and are you sure the new batteries are actually good? Did you try more than one set of batteries?

Customer: replied 11 days ago.
Honeywell Pro TH4110D. Yes, just purchased new w/expiration of 12/2025 and did try others in pkg.
Expert:  Airheatman replied 11 days ago.

There is one trick I have seen work to reset these digital thermostats that works sometimes. That is to remove batteries and install them backwards for 5 seconds, Then remove and install properly,If this does not reset the little computer board in the thermostat you will need to replace the thermostat.

Note: Occasionally , this will not work and will even cause thermostat to start smoking.If so simply remove batteries.If thermostat is not working already, it is worthless anyway, so no harm done .I have seen it work about 20 per cent of the time. So if that is something you are comfortable doing would try it.Could save you having to buy another thermostat.Otherwise, just go ahead and replace it.

Related HVAC Questions