Why thermostat goes blank then comes back on
A thermostat plays an important role in cooling and heating your house optimally. But what does it mean when your thermostat goes blank? First, you have to troubleshoot before you can fix the problem. There is a myriad of reasons as to why a thermostat goes blank then comes back on.
It May Be Turned Off
One of your housemates may have decided to turn it off. Make sure it is on by turning it on and see if it will work.
The LED Screen Brightness Is Not Bright
It is possible to reduce the brightness on some thermostats. Which can appear to be a blank thermostat display if you look at it from a distance? Confirm if this is the issue and adjust it according to your preference.
The Thermostat Batteries Are Low
Look at the battery indicator on the screen and see if the batteries are running low. This usually causes the thermostat to lose power intermittently. Replace the batteries and if it works afterward then low batteries were the culprit. This shouldn’t be an issue if your thermostat has a c-wire or a power extender kit.
It Has A Blown Fuse
Replace the fuse in the air conditioning system as this may cause the thermostat to go blank.
Tripped Float Switch
The condensed water collected in the air conditioner can trip the float switch if it is too full. This will, in turn, cause the thermostat to go blank. Check if this is the issue and empty out the water.
Dirty Air Filters
If your air filter is clogged, this may cause the air conditioning unit to malfunction which will, in turn, affect your thermostat so make sure you clean your air filters every once in a while.
The Electric Circuit Has Been Tripped
An electrical surge in your house can cause your circuit breaker to trip which will, in turn, cause the thermostat to go off as it is not in a position to run your AC system.
Your air conditioning is too big for your house
An oversized high ventilation air cooling (HVAC) system will cool your house to fast causing the thermostat to go off as it does not need to regulate the temperature anymore.
The Thermostat Is Defective
If all the solutions above do not fix the blank thermostat display issue, then your thermostat is broken and it needs to be replaced.
In summary, make sure your air conditioning is maintained regularly as a good number of reasons for your thermostat going blank revolve around your HVAC problems. Whatever you do, do not under any circumstance start fiddling with the wiring in your thermostat or air conditioner. This may lead to more damage than good. Instead, get a specialist to look into the problem.