cannot register honeywell wifi thermostat

Sometimes you cannot register Honeywell WiFi thermostat. We have all the solutions. Honeywell thermostats have gained a lot of smart functionalities recently.

Thus, you must connect them to the WiFi and register with an account to ensure maximum effectiveness.

If you cannot register the Honeywell WiFi thermostat check if the WiFi is correct, replace the batteries, and ensure you find the necessary information.

Let’s see how to clear the path so you can register the Honeywell thermostat!

Cannot Register Honeywell WiFi Thermostat – 8 Fixes!

Solution #1: Set Up The Thermostat’s WiFi

setting up the thermostat's wi-fi

Cannot register my Honeywell WiFi thermostat! That might have happened because you’ve forgotten a very important step: correctly setting up the Thermostat with the WiFi network. 

First, you need to get into the thermostat’s WiFi mode:

  1. Turn the Honeywell Thermostat on.
  2. Hold the “Fan” and “Up” buttons for 5 seconds.
  3. Press the “Next” button until the left number is 39.
  4. Next, use the arrow buttons to change the number to 0.
  5. Press “Done.”

Set Up The Network

Now you will need to pick up your phone or any other smart device in which it is possible to check the available networks.

  1. Open the WiFi settings.
  2. You should see a network named “NewThermostat_xxxxx” (the xxxxx should be numbered).
  3. Connect to it.
  4. If asked what type of network it is, choose “Home.”
  5. Open a web browser.
  6. You should go to this address:
  7. Your regular WiFi network must show up.
  8. Tap on it and connect.

After the Honeywell Thermostat’s WiFi is set up, there should be no problem registering the device with your account on the site.

Solution #2: Reset The WiFi Details

resetting the wi-fi details

Still, regarding the WiFi details of your Honeywell thermostat, the current WiFi details may be incorrect.

Perhaps you have set them up wrong, or you have a used thermostat that belonged to another house. In those cases, you must reset the WiFi details.

Here is how:

  1. Detach the thermostat faceplate from the wall plate;
  2. Wait 30 seconds;
  3. Reattach the faceplate.

When you do it, the Honeywell Thermostat will try to reconnect to the already-known network.

You should not allow it and then enter the WiFi setup mode (as shown in Solution #1).

Solution #3: Remove Old Details

removing old details

Perhaps your situation is this: you recently got your hands on a Honeywell Thermostat and are trying to register it with your online account.

However, it is already linked to the previous owner’s account. Let’s explore the two options to fix that.

Steps For The Previous Owner

Suppose you contact the previous owner, and they are down to help you.

Ask them to do this:

  1. Log into the Total Connect Comfort website.
  2. Click the location link.
  3. Delete that option.
  4. Ensure that the Honeywell thermostat is no longer connected to the account.

It is also possible to use the app:

  1. Open the app.
  2. Select the thermostat.
  3. Tap “Settings.”
  4. Choose “Thermostat configuration.”
  5. Choose “Delete.”
  6. Tap on “Yes.”

Get Help From The Brand

When you no longer have a means of contacting the previous owner or the previous owner is not able/willing to help you, you can count on the Honeywell support team. 

  1. Enter the Honeywell site.
  2. Locate the support/contact details.
  3. Get in touch and explain the situation.

It might take a while to get an answer. Still, any staff member will be able to unregister the thermostat remotely.

Solution #4: Check The Batteries

checking the batteries

Again, the situation we are about to troubleshoot is more likely if you have a previously owned thermostat.

The batteries could be old already, so the thermostat cannot hold a steady connection to the WiFi.

Thus, the servers can’t recognize the device when you try registering it. 

Let’s do this:

  1. Remove the thermostat from the wall mounting plate.
  2. Remove the faceplate (you might need to flip it up or take it out, depending on the model).
  3. Take the batteries out.
  4. Check their condition.
  5. Replace if you think it is necessary.
  6. Reassemble all the parts.

After that, ensure the Honeywell Thermostat can turn on and connect to the WiFi. If it is, you can proceed to register it with your account.

Tip: If your Honeywell thermostat has already been used before, it is recommended to clean the battery housing. Dust could accumulate and interfere with the electricity delivery.

Solution #5: Locate The Device MAC ID And CR Code

locating the device mac id and cr code

Are you having trouble registering your Honeywell thermostat because you can’t identify the necessary info?

Usually, your address is required, along with specific info about your thermostat: the MAC ID and CR code. 

We will help you find out those two pieces of information:

  1. Ensure the Honeywell thermostat is on.
  2. Press the menu button.
  3. Check the device info on the menu.
  4. The MAC ID and MAC CRC should be displayed.

Each device has a unique MAC ID and MAC CRC.

If you can’t access the device’s menu, you can also locate the info on:

  • Registration card (found inside the device’s packaging).
  • Device’s backplate.

Solution #6: Get Rid Of “Cloud Connection Error”

getting rid of _cloud connection error

Perhaps you are trying to register on the site or app but get the “Cloud Connection Error” message.

That concerns the Honeywell thermostat’s ability to keep a steady connection with the servers. 

Here are the official steps recommended by Honeywell:

  1. Unplug your router for 2 minutes.
  2. Log out of the app.
  3. Log back in after 10 minutes.
  4. Try registering again.

What If The Error Persists?

Sometimes the error persists. In that situation, Honeywell suggests that users do the following:

  1. Open the app.
  2. Navigate to the Thermostat settings.
  3. Select “Delete thermostat.”
  4. Reset the WiFi details (Solution #2).
  5. Set up the WiFi again (Solution #1);

Solution #7: Fix The “Certification Validation Failed” Message

fixing the _certification validation failed_ message

Sometimes you try to register on the site or app and get the following message: Certificate Validation Failed.

Honeywell says you must factory reset the thermostat and then attempt the steps differently in the registration process.

How To Factory Reset?

Here is how you can factory reset the thermostat:

  1. Press the Menu button for 5 seconds.
  2. Go to ADV Reset.
  3. Select “Factory.”
  4. Wait for the device to restart.
  5. Remember to set up its network settings again (Solution #1).

What Next?

According to Honeywell, when setting up the device again, you must answer “No” to “Is your thermostat displaying BLE?”. 

If that is not possible, the official approach is to use a different smartphone to configure.

Note: BLE stands for Bluetooth Low Energy. It is one of many standards used by current smart devices.

Solution #8: Mind The Network Settings

minding the network settings

Suppose the connection is not strong enough after all the trouble you’ve already had. Are you connecting to 5GHz or 2.4GHz?

Even though some users connect to 5GHz without issues, Honeywell officially recommends using 2.4GHz.

  • When setting up the network settings (as shown in Solution #1), you should connect to your router’s 2.4GHz frequency.

If you have already connected to the 5GHz, return to Solution #2 and set the device with the correct frequency.

Fix An Overcrowded Channel

One of many downsides of the 2.4GHz frequency is that it has fewer channels than 5GHz.

So if the connection is still flimsy, you could assume that too many routers in the neighborhood are already using the same frequency as yours. 

Here is how to change it:

  1. Use NetSpot or similar software on your PC/Mac.
  2. Open it and scan the area.
  3. Pay attention to the most used channels in the area.

Is your router using one of the overused channels? Then we found the issue.

How To Change The Channel

changing the channel

Once you confirmed the problem, it is time to fix it:

  1. Open your web browser.
  2. Type your router’s IP.
  3. Find the “Wireless settings.”
  4. Click on “Channels” for your 2.4GHz network.
  5. Select a different channel.

Once you change the channel, the connection should become steadier.

Quick Recap

If you cannot register Honeywell WiFi thermostat, you should always investigate the WiFi capabilities of the device.

Even though it is turned on and shows up in the app, its connection to the servers may not be steady.

The guide above has all the solutions, so we hope you can now register. Check more articles if you need further tips to improve your Honeywell efficiency!