Gas Furnace Thermostat Blank

If it does not read on.

Gas furnace thermostat blank. The batteries in your thermostat can last as long as five years or as little as a few months so if your thermostat is turned on but still blank try swapping out the batteries. Most modern thermostats are powered by the transformer in your air handler or furnace. The issue could simply be a broken thermostat. Overheating typically occurs due to poor airflow or parts that are going bad or broken.

Wait a short time and see if the display returns. More buying choices 7 27 28 used new offers. For a gas furnace the trouble might be the limit switch. Most thermostats display a low battery symbol when the juice is running low.

The safety switch was triggered in some homes an air conditioner or furnace can trigger a safety switch and turn off the thermostat entirely if any damage has been detected. The possible reason your thermostat screen can go blank is a loss of power to the furnace. If your thermostat screen goes blank after several minutes of operation it could be due to the high limit switch tripping. In rare cases the transformer could be located in the condensing unit.

A technician can advise you on whether to fix the unit or replace it with an updated thermostat model. Free shipping by amazon. On the other hand if your thermostat is hardwired to your hvac system for power it could be a temporary blank screen if the thermostat is in the middle of recharging. 4 5 out of 5 stars 985.

1 16 of 687 results for gas furnace thermostat emerson 1e78 140 non programmable heat only thermostat for single stage systems. Get it as soon as fri oct 9. Power stealing thermostats get their power from the transformer. You will need a professional to repair these troubles.

If your thermostat screen has gone blank and your thermostat runs on batteries the first thing you should try is replacing the batteries with a fresh set. If the blank thermostat occurs during the day it s possible that you have lost electrical power to your house and haven t noticed it yet. Honeywell and other brands of programmable thermostats typically show a blank screen when there is no power going to the wall unit.