The possible reason your thermostat screen can go blank is a loss of power to the furnace. If your thermostat is blank the first thing you should do is.
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Thermostat keeps going blank. Simply reset the circuit breaker and see if that solves the problem. The carrier programable thermostat goes blank after appx 2 minutes of heat then read more. Typically thermostats are connected to a home or business via the main electrical system. This is another silly thing that can cause your thermostat to go blank. Why is my thermostat blank. The circuit breaker tripped 2.
If your thermostat is one of the latter a blank screen probably means the batteries have gone dead. Many are wired into the electrical system of the house. If you have a blank thermostat screen there may be a simple solution to your problem. If the screen of your honeywell thermostat is blank you should first check the furnace or air conditioner to be sure both are on and functioning properly. The thermostat needs to be replaced. There are loose connections or wiring problems 5.
A fix could be as simple as closing the door of the furnace. If the circuit breaker trips youll see a blank thermostat screen. It resta read more. Here are some of the most common reasons why your thermostat screen might be blank as well as ways to fix it. The furnace combustion fan shuts off but the blower continues to run. The batteries in your.
The safety switch was triggered 4. 4 reasons your thermostat is blank 1. Issue with your ac and. Power stealing thermostats get their power from the transformer. Thermostat batteries died and need to be replaced. Most modern thermostats are powered by the transformer in your air handler or furnace.
Remove the front plate of the thermostat from the wall to find the batteries and change them. You may need to replace your thermostat. 10 reasons why your thermostat is blank 1. The circuit breaker tripped. The first possibility to look into when you find a blank thermostat screen is to check if the unit needs to have its batteries changed. For the chronotherm lll during the heat cycle the system light shuts off and ac is displayed instead of the temperature.
If the door to the furnace is open for instance the thermostat display may be blank. The batteries are dead 3. This might seem silly but if your thermostat is blank its best to double check that its on. Not all thermostats use batteries. Thermostats can either run from a direct connection to the electrical system or from batteries. In rare cases the transformer could be located in the condensing unit.
If youve tried all of the troubleshooting explained above and your thermostat remains blank call an hvac professional to help you determine whether its time to replace your thermostat or whether youre dealing with a more complicated issue that can still be repaired.