---
title: How to Add Honeywell Devices to the Lightwave Link Plus App
description: Learn how to easily add Honeywell devices to the Lightwave Link Plus app with this step-by-step guide. Ensure seamless smart home integration in minutes.
---
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# How to Add Honeywell Devices to the Lightwave Link Plus App
## This article provides step-by-step instructions for pairing Honeywell heating devices with your Lightwave system. It specifically refers to the Honeywell Thermostatic Radiator Valves (TRVs), including models HR91 and HR92, as well as the Honeywell wireless thermostat DT3R/DT4/DT4R. Follow this guide to ensure successful integration and control of your heating setup.
---
#### **Adding a Honeywell HR91 TRV**
**In the Lightwave App:**
1. Open the **Lightwave Link Plus** app.
2. Tap the green **plus (+)** icon to add a new device.
-png-1.png?width=208&height=450&name=Untitled%20design%20(12)-png-1.png)
3. Select **Devices**.
-png-1.png?width=208&height=450&name=Untitled%20design%20(13)-png-1.png)
4. Choose **Link Honeywell Device**.
-png-1.png?width=208&height=450&name=Untitled%20design%20(14)-png-1.png)
5. Enter a unique name for the Honeywell TRV.
The app is now ready for the linking process.
**On the Device (TRV):**
1. **Press and hold** the **binding button** on the TRV for **5 seconds**.
2. The **LED will flash amber** for up to 2 minutes, indicating it’s in pairing mode.
3. Immediately tap the **Link** icon in the app.
4. The app will scan for the TRV.
5. When pairing is successful, the **LED will show solid green** for 5 seconds.
6. You can now assign the TRV to a room and begin controlling it manually or through automations.
---
#### **Adding a Honeywell Thermostat**
**In the Lightwave App:**
1. Tap the **plus (+)** icon to add a device.
-png-1.png?width=208&height=450&name=Untitled%20design%20(12)-png-1.png)
2. Select **Link Honeywell Home Device**.
-png-1.png?width=208&height=450&name=Untitled%20design%20(14)-png-1.png)
3. Enter a name for the Thermostat.
The app is now ready for the pairing process.
**On the Thermostat:**
1. **Long press** the button until “**PAr**” appears on the display.
2. Toggle down to **RF** and press the button to confirm.
3. Then toggle to **COn for older models or X80 for newer models** and press the button.
4. Immediately press the **Link** button in the app.
5. The app will begin scanning and, once found, the thermostat will flash 1 on the screen. You can then assign the thermostat to a room.
6. Tap **Save** or **Done** to complete the setup.
**If You Don’t See the "COn" Option: Clear the Thermostat Memory**
1. **Long press** the button until “**PAr**” is displayed.
2. Toggle down to **RF** and press the button.
3. Toggle down to **Clr** and press the button to clear memory.
4. Wait 10 seconds.
5. **Remove the battery**, then **restart the device**.
6. You can now retry the pairing process from the beginning.
---
#### **How to Factory Reset the Honeywell Thermostat**
To return the Honeywell DT3R to its factory settings:
1. **Enter Programming Mode:**
- Press and hold the **button** on the DT3R for **5 seconds**.
- The screen will display `PAr`, indicating you're in the pairing/settings menu.
2. **Access the Reset Menu:**
- Press the **button again** to cycle through the available menus.
- Use the up/down arrows to scroll to the menu labelled **`FS`**.
3. **Activate Factory Reset:**
- Once on `FS`, press the **button**.
- In some cases, you may need to **press and hold** the button to confirm the reset.
4. **Confirmation:**
- The device will reset and return to default factory settings, clearing any previously stored configuration or pairing.
If you still require assistance, please call us on **0121 468 8987**. Our team is available Monday to Friday, 9:00 AM – 5:00 PM.
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