So your Honeywell thermostat not turning on AC, and you are not sure what to do? We are here to assist you regarding this topic.
In this post, we will go into the reasons behind the problem and how to fix Honeywell Thermostat Not Turning on AC on its own. Let’s get this started.
Procedure for Honeywell Thermostat Not Turning on AC
If your Honeywell thermostat won’t turn on the air conditioning, attempt the following troubleshooting steps:
1. Configure your Thermostat to your AC
If your Honeywell thermostat isn’t set up to work with your heating and cooling systems, it might not turn on the air conditioning.
If your air conditioner was going on but then suddenly stopped, it’s possible that your thermostat settings are no longer compatible with your HVAC system. It’s most likely due to the fact that you upgraded your HVAC system.
As a result, you will need to reconnect your thermostat to your HVAC system to check if the issue is resolved. To reconfigure your Honeywell thermostat, follow these steps:
Step 1:
To get started, click the button below. Your Honeywell thermostat has a system. A blank box will appear as a result of this action.
Step 2:
Hold the blank box down until the screen on your Honeywell thermostat changes and your Model ID appears. The Model ID on most Honeywell thermostats begins with TH or RH and ends in digits.
Step 3:
Then, you need to select the option of Menu from the drop-down menu.
Step 4:
Then choose the option of Installer.
Step 5:
You will be prompted to input your Date Code. The Date Code for your Honeywell thermostat can be found on the back of the unit.
Step 6:
Your Honeywell thermostat will display your installation settings if you supplied the right date code.
Step 7:
Press and hold the UP navigation and FAN buttons at the same time.
Step 8:
Function Number 1 and Setting Number 0 will be shown on the thermostat. The settings for your heating and cooling system types are the first function.
The Function Number is displayed next to your setting number. In the Honeywell thermostat, there are five different ways to set numbers. Depending on your home’s system, you can choose from the following options:
Step 1:
If your AC is connected to oil, electric, or gas heater, then select 0.
Step 2:
If you have a heat pump, then choose 1.
Step 3:
If you simply use a heater, then choose 2.
Step 4:
If you have a heater with a fan, then choose 3.
Step 5:
If you simply want the thermostat to control your cooling systems, then select 4.
Step 6:
Click Done to dismiss the installation settings once you’ve found the proper setting for your AC.
If this doesn’t work, move on to the next step in the troubleshooting process.
2. Set Your Honeywell Thermostat to Cooling Mode
Is your Honeywell thermostat still not turning on your air conditioner despite the fact that you have set it up correctly? Then you should double-check that your thermostat is in cooling mode.
If your Honeywell thermostat’s cooling mode is turned on, it will be able to turn on your air conditioner automatically. Here’s how you can do it:
Step 1:
On your thermostat, look for the Heat Off Cool system slider control.
Step 2:
Turn the knob to the Cool setting.
Step 3:
Then change the temperature using the arrows on the screen to your chosen setting.
Step 4:
And at the last, the cooling mode on your Honeywell thermostat has now been turned on.
3. Connect your RC Wire to the RC Terminal
The RC (Red Cooling) wire in your Honeywell thermostat is placed inside the thermostat’s body. This wire provides power to your home’s cooling system which is Fan and AC. The RC, on the opposite hand, will solely work if it’s connected to the RC terminal.
Your RC wire is also detached from its terminal if your cooling system doesn’t activate when you’ve got turned on your Honeywell thermostat. you want to reconnect your RC wire to the RC system to resolve this issue.
By gap the lid of your Honeywell thermostat, you will realize the RC wire and affiliation. If you’re undecided about the way to address wiring issues, ask for help from knowledgeable.
4. Turn on Your Furnace
In most homes, the blower motor for the cooling and chamber is the same. this suggests that if the chamber is turned off, the cooling won’t work.
Blower motors move hot air from the chamber and cool it into the air vents. The air is then distributed throughout the house via air vents.
Cool air would keep in your AC if your chamber was changed as a result of the blower motor being positioned at intervals in the chamber.
When you turned on your Honeywell thermostat, it’s going to have turned on the air-con. However, as a result of there being no cool air within the space, you’ll believe the cooling is turned off.
If your air conditioning does not work when you’ve got turned on your Honeywell thermostat, check that your chamber is turned on.
To begin, check that your furnace’s electrical fuse is turned on. If you have got a furnace, it’ll have a single-lever electrical fuse.
Electric furnaces, on the opposite hand, area units oft equipped with double-lever circuit breakers. to find the one that works together with your chamber, you will activate several circuit breakers. to show your electrical fuse on or off, flip the lever.
You must assure whether or not you have got turned on your furnace’s switch when turning on the electrical fuse. If your chamber remains turned off, activate the switch. The switch for your chamber is found on a wall adjacent to the chamber.
Finally, you need to shut the chamber door. If the door is open, most furnaces won’t work. Your air conditioning ought to begin operating a couple of minutes before you close up the chamber door.
5. Clean Your Air Vents
You may need to clean your air vents if you still can’t obtain cold air in your room after turning on your furnace. Your air vents distribute air from your air conditioner and heater throughout your home. However, if the vents are clogged, air may not be able to travel through.
When dirt collects on the surfaces of air vents, they become blocked. Cleaning your air vents will allow air to circulate throughout your home. Wash the covers of your air vents with soap and water to clean them.
6. Replace the Batteries
If the battery in your Honeywell thermostat is low, it may not be able to turn on your air conditioning. As a result, the batteries will need to be replaced.
By looking at the screen, you can see the state of your Honeywell thermostat battery. The screen will say ‘No power source’ if the battery is dead.
It’s time to replace your Honeywell thermostat battery if you see this notice on your screen. To replace the battery in your thermostat, follow these steps:
Step 1:
Removing the thermostat from the wall is a good idea.
Step 2:
To remove the batteries, open the container on the side of your thermostat.
Step 3:
Remove the old batteries from the compartment and replace them with new ones.
Step 4:
Reinstall your Honeywell thermostat on the wall and shut the compartment.
7. Reset Your Honeywell Thermostat
Reset your thermostat if your air conditioner still doesn’t work after you’ve done all of the troubleshooting steps mentioned. Depending on the model ID of your thermostat, you may need to use a different way to reset it.
Remove your thermostat from the wall and examine the back for the Model ID. The numbers following the letters RHT, CT, TH, RLV, TL, CT, or T are your Model ID.
You can begin resetting your thermostat now that you’ve confirmed the model ID. The following are the many methods for resetting each Honeywell thermostat model:
6000 series Honeywell:
Step 1:
Set your thermostat to the desired temperature.
Step 2:
Press the Up arrow button and the button below Fan at the same time.
Step 3:
For roughly 5 seconds, hold both buttons down. Then let them go.
Step 4:
Then, on the bottom left of your Honeywell thermostat, push and hold the button.
Step 5:
Hold the button down until the number ’39’ appears on the screen.
Step 6:
Hold down the Down arrow until you see the number ‘0’ on the screen.
Step 7:
To finish the reset, click on Done.
7000 series Honeywell:
Step 1:
Unplug your Honeywell thermostat from the wall and turn it off.
Step 2:
Remove the thermostat from its mounting plate and set it aside.
Step 3:
To access the thermostat’s batteries, open the side compartment.
Step 4:
Remove the batteries, flip them over, and place them in the compartment the wrong way up.
Step 5:
Allow for a 5-second pause.
Step 6:
Reopen the side compartment and re-insert the items in the proper order.
Step 7:
The display on your thermostat should now turn on.
Step 8:
Replace your thermostat on its mounting plate and turn the power back on.
Step 9:
Your Honeywell 7000 series thermostat has been reset.
If none of these techniques work, see your user manual or try searching for the reset instructions for your thermostat’s model on Google.
Final Point
That’s how to fix Honeywell Thermostat Not Turning on AC. If the problem remains after doing all of the troubleshooting techniques in this article. If you need any help regarding this topic then comment in the comment section, we assure you that we will help you ASAP.
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