Asked by: Gilbert Mateus
asked in category: General Last Updated: 23rd June, 2020

Why is my pro thermostat blinking?

If your thermostat keeps blinking during the normal operation of your AC, that usually means there's an issue with the outdoor portion of the system. It's basically been locked out, meaning that it has shut itself down and sent a signal to the thermostat letting it know there's an issue.

Click to see full answer.


In this way, why does my thermostat keep flashing cool on?

If the "cool on" or the snowflake icon is flashing, the thermostat is in delay mode, which can take up to 5 minutes. If the thermostat indicates a call for cool, verify that the furnace door is securely closed and that the power switch on the furnace is set to On.

Similarly, how do I reset my pro thermostat? The thermostat can be reset by power cycling. Power cycle the thermostat by removing if from the subbase and remove the batteries (some thermostats will not have batteries). Wait 10 seconds and then replace the batteries and place the thermostat back on the subbase.

Similarly one may ask, why is the cool on blinking?

The cool indicator flashing typically means the thermostat is in delay mode. When the cool turns off, the thermostat will not turn it back on for 5 minutes so that it doesn't damage the compressor.

What does resetting thermostat do?

Just like your cable modem, a digital thermostat needs a reset every once in a while to kick it back into shape and set it in proper working order. You will know when a reset is necessary because your thermostat will not be regulating the temperature of your home as well as it was before.

19 Related Question Answers Found

Is there a reset button on Honeywell thermostat?

How do I reset my thermostat?

What does it mean when your thermostat has a snowflake on it?


Will a Honeywell thermostat work without a battery?

How do I reset my Honeywell thermostat?

Why is my new thermostat not working?


What does red light on Honeywell thermostat mean?

Is there a battery in a Honeywell thermostat?

How do you reset an AC unit?


When should I reset my thermostat?

Is there a reset button on a White Rodgers thermostat?

How do I know if my thermostat is broken?