Honeywell Thermostat Cool On

So what is the problem behind the Honeywell thermostat cool on but not working? If the thermostat cool display shows ‘cool on’ for a long time but the air does not get cold, it is a matter of concern for you. You need to make sure to check all the settings properly. If the cool sign is on check the furnace door is properly closed and the power is connected properly. You must also check if the battery is working properly.

To identify the problems with Honeywell Thermostat Cool and find solutions we did research over the internet and analysed the customer reviews. Check the whole article to know more about Honeywell Thermostat Cool on problems. 

The article contains:

What happens when the Honeywell Thermostate shows ‘Cool On’How does Honeywell Thermostate Cool on workHow to solve the ‘cool on’ problem in Honeywell Thermostat

What Happens When the Honeywell Thermostat Shows ‘Cool On’?

Whether the ‘cool on’ feature blinks for a long time or it does not cool the room even after getting ‘on’, you should be concerned about the problem. Here’s what can happen when it is ‘Cool on.’

When the ‘cool on’ feature blinks for a short time or not more than 5 minutes then it is nothing that can cause harm. It blinks due to a built-in feature that is a safety measure. The compressor of the thermostat gets 5 minutes so that it can fire up the system components. 

If the ‘cool on’ of the thermostat blinks for a long time then you should be concerned. Because showing ‘cool on’ or blinking for more than 5 minutes is not normal. 

This can happen if your thermostat is newly installed and you are still using the old thermostat’s wiring. The cool on may not work if the cool temperature is not lower than the room temperature and the room won’t get cold enough.

How Does Honeywell Thermostate ‘Cool On’ Work?

Your Honeywell thermostats ‘Cool on’ feature will work only for 5 minutes. It is completely normal and it is generally a signal that the air conditioning is working. 

It is a basic operation setting of your thermostat control that indicates that the device is going to start cooling. It gets turned on when the light is on and works over the overall elements of the thermostat so that the system can work properly. 

Generally, it flashes for 5 minutes for safety issues. Otherwise, it can show disturbances when there is an error inside the system.

How to Solve the ‘Cool On’ Problem in Honeywell Thermostat?

To solve the thermostat ‘cool on’ not working issue you may need to troubleshoot the system or check the whole system properly to find the glitch.

The following are some ways that may come of your use when your thermostat cooling is not working: 

Proper Installation

The installation of a Honeywell Thermostat device in your home needs an HVAC technician. But many people rely on third-party handymen who are not professional technicians, to save money. 

As a result, they can’t install it properly and may leave the door of the HVAC unit open. It can show problems in the cooling setup later. So, make sure to install your Honeywell thermostat system properly.

Check the Thermostat Set up Mode

When the thermostat is in the setup mode its power is off and the ‘cool on’ light may blink. So, make sure to set the clock when the setup is complete and you can turn it on. In this way, the problem will be solved on its own.

The Thermostat is on the Correct Temperature and Setting

One of the efficient ways to cool your home’s temperature is to lower the temperature of the thermostat. And also make sure that the thermostat is on the cool mode and the fan is on the ‘auto’ mode at that time. 

Then check after a few minutes if the temperature of your home changes or not.

Check the Thermostat Batteries

The Honeywell thermostat may not work properly if it has a low battery. The display will show a ‘low battery’ signal when the battery has some issues. 

The low battery issues may occur for many reasons. If the device was not installed with C-wire it can cause the batteries may get damaged. 

Solving the Blank Display Screen Issue

Due to a low or damaged battery, the display screen of the thermostat may go blank. As a result, it won’t show any operational settings including cool on. 

Also, the faulty HVAC system can cause a blank display screen. If any doors on the HVAC unit were left open during installation it may cause a blank screen. 

If the door is open, the triggering switch for the functioning of the device will not work. So, make sure the HVAC unit doors are closed properly so that the blank screen issue is solved.

So, if your home’s Honeywell Thermostat’s ‘cool on’ is not working properly try any of these solutions. Check the circuit and the connections properly. And you must ensure that the operational control is working properly.