UWG5-4999-WY Frequently Asked Questions

Please keep in mind that you must check your electric floor heating system with a digital ohmmeter in conjunction with a Circuit Check™. Take an initial reading as soon as you take the product out of the box to verify that it is within -5% / +10% of the values stated on the product’s label. This will give you a basis of comparison for future readings. Take a second reading once you have positioned the system to match your custom installation plan. It is also advisable to take an additional reading in the middle of the tile installation, just to make sure that the Circuit Check™ is doing its job. Then, take a final reading when you are finished with the floor installation and are ready to hook up the thermostat.

The Circuit Check™ is a tool developed by WarmlyYours to give you peace of mind and ensure trouble-free installations. Simply hook up the cold leads to the tool while you position the system to match your custom installation plan.

The Circuit Check™ will continuously monitor the continuity of the circuit during the installation of your system and during the installation of your flooring. The Circuit Check™ beeps immediately when a short in the system is detected, alerting you to a potentially damaged cable in the area you are working, before you lay the tile over the electric floor heating system.
 The WarmlyYours technical support team is available 24/7 to provide assistance if the alarm sounds, or if you would have any questions during your installation.

The breaker and wire sizes are selected based on the total amperage of the WarmlyYours heating system connected to a single thermostat. This information is on the WarmlyYours heating system's installation plan, electrical plan, or UL label. Based on guidelines from the National Electrical Code: loads up to 16 Amps may utilize 12 gauge wire with a 20-Amp breaker, and loads up to 12 Amps - 14 gauge wire with a 15-Amp breaker. Local code and/or other factors may change these guidelines.

One thermostat can control multiple heating mats/cables as long as all the heating elements are using less than 15 amps:

TempZone™ will cover aprx. 120 sq. ft. for 120V systems and 240 sq. ft. for 240V systems on one thermostat.

Environ™ will cover aprx. 150 sq. ft. for 120V systems and 300 sq. ft. for 240V systems on one thermostat.

Slab Heat will cover aprx. 90 sq. ft. for 120V systems and 180 sq. ft. for 240V systems on one thermostat.

After the OJ Microline UWG5 app has been installed on each user's device, utilize the same login credentials to operate the nJoy thermostat(s).

There is no need to set up secondary accounts to operate the nJoy thermostat.

Download the nJoy UWG5 app and ensure Bluetooth is enabled on your phone. Open the app, tap "Get Connected," and follow the on-screen instructions to complete the setup.

Note: The thermostat will not appear in your phone’s Bluetooth device list. Use the nJoy UWG5 app to complete the connection.

To completely power off the thermostat, turn off the circuit breaker controlling the thermostat.

Alternatively, put the thermostat into Standby/Frost Protection mode by pressing the lower right button once. A Standby icon will show for a few seconds before it fades out. The thermostat is now in standby. To exit standby, press the lower right button for a moment.

Reflective insulation is not effective with conductive heating, which is how embedded floor heating and snow-melting systems transfer heat. To be effective, the reflective insulation surface needs to face an air space (air gap), which allows the reflected heat to be redirected.

An effective solution considers the insulating material's R-Value. This is the rating of a material's insulating properties. The "R" stands for "resistance" and refers to the material's resistance to heat flow, or temperature conduction.

It is highly recommended to use a smartphone for the initial thermostat setup. Download the nJoy UWG5 app and ensure Bluetooth is enabled on your phone. Open the app, tap "Get Connected," and follow the on-screen instructions to complete the setup.

Note: The thermostat will not appear in your phone’s Bluetooth device list. Use the nJoy UWG5 app to complete the connection.

A factory reset will erase all settings, including schedules, temperature preferences, and Wi-Fi or Bluetooth connections. After resetting, you will need to set up the thermostat again, including re-pairing it with your mobile app.

This option allows you to restore the thermostat to factory settings.
PLEASE NOTE: This action cannot be undone, and all of your personal settings will be lost.

Additionally, if your thermostat was paired via Bluetooth with the UWG5 (nJoy) app, follow these steps to remove it from the Bluetooth list:

1. Open the UWG5 (nJoy) app.
2. If logged into your online account, tap the Bluetooth icon in the lower-left corner.
3. Locate the thermostat on the list (e.g., a greyed-out entry like “Bathroom 2”).
4. Long press on the thermostat name, then select Delete to remove it from the Bluetooth list.

Note: This action does not remove the thermostat from the iOS Bluetooth pairing list due to Apple’s system restrictions. If using an iPhone, you may need to manually remove the thermostat from your device’s Bluetooth settings.