Trane Link UX360 Smart Thermostat Installation Guide

Trane Link UX360 Smart Thermostat

Safety

NOTE: Use an 18-gauge color-coded thermostat cable for proper wiring. Shielded cable is not typically required.
Keep this wiring at least one foot away from large inductive loads such as Electronic Air Cleaners, motors, line starters, lighting ballasts, and large distribution panels. Failure to follow these wiring practices may introduce electrical interference (noise) which can cause erratic system operation. All unused thermostat wires should be grounded at indoor unit chassis ground only. The shielded cable may be required if the above wiring guidelines cannot be met. Ground only one end of the shield to the system chassis.

WARNING
This information is intended for use by individuals possessing adequate backgrounds in electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.
WARNING
LIVE ELECTRICAL COMPONENTS! During the installation, testing, servicing, and troubleshooting of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.

Product Specifications

Specification	Description
Model	THUI2360A200U
Product	UX360 Smart Thermostat
Size	7.125” x 4.725” x 1” (WxHxD)
Configurations	Heat Pump, Heat/Cool, Dual Fuel, Heat Only, Cooling Only
Maximum Number of Stages	5 Stages Heat, 2 Stages Cooling
Storage Temperature	-40°F to +167°F, RH non-condensing
Operating Temperature	32°F to 104°F, RH non-condensing
Input Power*	24VAC from HVAC System (Range: 18-30 VAC)
Power Consumption	2W (typical) / 5W (max)
Wire Usage	18 AWG NEC approved control wiring
Communications	Controller Area Network (CAN bus) 4-wire connection
System Modes	Auto, Heating, Cooling, Off, Emergency Heat
Fan Modes	Auto, On, Circulate
Cooling Setpoint Temperature Range	60°F to 99°F, 1°F resolution
Heating Setpoint Temperature Range	55°F to 90°F, 1°F resolution
Outdoor Temperature Display Range	Ambient Temperature: -40°F to 141°F (including dead band), -38°F to 132°F (excluding dead band) External Ambient Temperature: up to 136°F
Indoor Humidity Display Range	0% to 100%, 1% resolution
Minimum Cycle Off Time Delay	Compressor: 5 minutes, Indoor Heat: 1 minute

* On every application, 24VAC loads should be reviewed to be sure the indoor unit control power transformer is adequately sized.

General Information

What’s in the Box?

• Literature
  • Installer Guide
  • User Guide
  • Warranty Card
• UX360 Smart Thermostat
• Wall Plate
• Mounting Kit

Accessories

• Wired Indoor Sensor (ZZSENSAL0400AA)
• Wireless Indoor Sensor (ZSENS930AW00MA*)
  * Wireless Indoor Sensor software version 1.70 or greater is required.

Trane® Link Systems

• Installation. Trane Link systems are built to be “plug and play”. Once you’ve connected the outdoor unit, indoor unit, SC360, and UX360, turn on the system. The equipment will communicate and configure the system automatically to default settings.
• Verification. You can easily verify all modes of operation. Link can run and verify each mode of operation as well as verify the system is functioning properly. For example, instruct the system to deliver 1200 CFM of airflow, and the system will verify correct operation. Once testing has been completed, you can get a commissioning report that documents the results.
• Monitoring. With a homeowner’s permission, you can monitor data from the system remotely. This includes creating a birth certificate that captures how the system was operating on day one, and tracking performance over time.
• Upgrades. Connected systems can have their software remotely upgraded through the SC360, including pushing additional features out to the installed communicating equipment. No dealer visit or SD cards are required.

Technical Advantages

• Self-configuring system on startup
• Automated verification simplifies charging and airflow procedures, and automatically goes through all modes of operation to verify the system is operating properly and within specifications
• New sensors to easily monitor data, with information shared wirelessly, either onsite or in the cloud
• Standardized and consistent wiring: four-wire connection for all communicating equipment simplifies installation
• Faster, more robust communication protocol
• Remotely control connected systems from the Trane Home mobile app.
• The system supports up to four indoor temperature and humidity sensors in a non-zoned system for averaging, including ZSENS930AW00MA sensors.
• With an Internet connection, full system updates for installed communicating equipment will occur automatically.

Download the Trane Diagnostics mobile app from the Google Play™ Store or App Store®.

Placement & Installation

Location

• Install the UX360 in a centrally located climate controlled living space with good air circulation.
• The UX360 MUST be at least 3 feet apart from any other electronic device such as a TV or speaker.
• You MUST assign an indoor temperature sensor that is installed in a controlled space. See the Sensor Setup section for details.
• If the UX360 and the SC360 must be in close proximity (closer than 3 feet), always install the UX360 diagonally above the SC360. If top left and top right sides are not possible, then install the SC360 to the right or left side of the UX360.
• Keep these 2 devices as far apart as possible. Never install them on top of each other.
• The UX360 should be at least 3 feet away from a corner where 2 walls meet. Corners have poor circulation.
• The UX360 should not be directly exposed to air currents from supply air or ceiling fans.
• Avoid exposing the UX360 to any radiant heat source such as sunlight or fireplaces.

Network Connections

To take advantage of the full range of features on the UX360, the SC360 System Controller should be connected to the Internet using a wireless connection.
Refer to the UX360 User Guide for additional information on connecting to the Internet.

Mounting

Follow these steps to mount the UX360 to the wall. See Figures 2 and 3.

1. Turn OFF all power to heating and cooling equipment.
2. Route the wires through the opening on the Sub-base.
3. Place the Sub-base against the wall in the desired location and mark the wall through the center of each mounting hole.
4. Drill the holes in the wall where marked.
5. Mount the Sub-base to the wall using included mounting screws and drywall anchors. Make sure all wires extend through the Sub-base.

Wiring

1. Adjust the length and position of each wire to reach the proper terminal on the connector block of the Sub-base. Strip 1/4” of insulation from each wire. Do not allow adjacent wires to short together when connected. If a stranded thermostat cable is used, one or more strands will have to be cut to allow the cable to fit the connector. For use with solid conductor 18 ga. thermostat wire.
2. Match and connect control wires to the proper terminals on the connector block. Refer to the Field Wiring Connection Diagrams shown later in this document.
3. Push excess wire back into the wall and seal the hole to prevent air leaks.
   NOTE: Air Leaks in the wall behind the UX360 can cause improper operation.
4. Attach the UX360 to the Sub-base.
5. Turn ON the power to the heating and cooling equipment.

Field Wiring Connection Diagram Options

COMMUNICATING INDOOR AND OUTDOOR

CAN Low Voltage Troubleshooting

Troubleshooting steps	Description
Bus Idle
Expected Measurement	2 – 4 VDC between DH and GND 2 – 4 VDC between DL and GND
	Voltage measured from DH to DL will vary depending on bus traffic
Resistance Between DH and DL1
Appropriate range can vary depending on the communicating equipment installed on the system
Expected Measurement	60 +/- 10 ohms can be expected when the SC360, communicating indoor unit and communicating variable speed outdoor unit are installed.
	90 +/- 10 ohms can be expected with no communicating outdoor unit installed
Lower than appropriate range	Possible short on the bus between DH and DL
Higher than appropriate range	Possible open circuit on the bus
Resistance Between DH and GND2
Expected Measurement	1 Mohms or greater

1. All power to the system must be turned OFF.
2. The device must be powered OFF and disconnected from the CAN bus.

Configuration

Certain menu selections may or may not be present depending on other menu settings and equipment installed.

General

Menu Selection	Options	Description
System Name	Manual keypad entry	Enter a custom name for the system.
Dealer Code	Manual keypad entry	When the system is connected to Trane Home, a Dealer Code can be entered to populate the dealer’s contact information and logo. The code is the dealer’s registered phone number listed on ComfortSite. A dealer can upload a logo by selecting Tech Support from the Home page of ComfortSite, then select Dealer Logo Management and upload logo. File size should not exceed 3MB.
Factory System Restore	Full Restore	Erases all user and installer settings and restores the system to factory default settings.
	Partial Restore	HVAC configuration will be set to factory default values. Zoning configuration, indoor sensor settings, and user settings will be retained. After the partial restore, HVAC configuration may need to be reconfigured.

Climate Control

Sub Menu	Menu Selection	Options [Default]	Description
General System Operation	Cooling Sensible Load Value (Btu/h)	[0] Btu/h	Range of values is based on system configuration.
	Heating Sensible Load Value (Btu/h)	[0] Btu/h	Range of values is based on system configuration.
	Aggressive Recovery by Temp Error	Enabled/[Disabled]	Select whether to disable the 15-minute staging inhibit during heating mode when Temp Error is greater than 2°F. Cannot be enabled when Heating Aggressive Recovery by ODT is enabled.
	Heating Aggressive Recovery by ODT	Enabled/[Disabled]	Select whether to require/[bypass] outdoor temperature to fall below the selected Heating Aggressive Recovery Setting in order to disable the 15-minute staging inhibit during heating mode when Temp Error is greater than 2°F. Cannot be enabled when Heating Aggressive Recovery by Temp Error is enabled. Outdoor temperature sensor must be connected and enabled to allow this setting to be selected.

General System Operation	Heating Aggressive Recovery Setting (°F)	0°F -70°F [40°F]	Select the outdoor temperature for Heating Aggressive Recovery.
	Smart Control Fan Enable Status	Enabled/[Disabled]	Select to enable or disable Smart Continuous Fan.
System Controller	SC360 Installed in Conditioned Space	Yes/[No]	Enable if the SC360 was installed in a conditioned space and can be used as an indoor temperature and humidity sensor.
Indoor Heat	Heater Type	[None]/Electric/ Hydronic	Select the type of indoor unit installed. Value is pre-populated for communicating equipment.
	Heater Size	Electric: [Empty List]/ 25KW, 1-Phase/ 20KW, 1-Phase/ 15KW, 3-Phase/ 15KW, 1-Phase/ 10KW, 3-Phase/ 10KW, 1-Phase/ 8KW, 1-Phase/ 4KW, 1-Phase/ 5KW, 1-Phase Hydronic: 100Kbtu/80Kbtu/ 70Kbtu/50Kbtu	Select the size of the indoor unit based on tonnage and heater type. Options vary depending on heater type. Value is pre-populated for communicating equipment.
	Heater Model Number	[NOMODELNUM]	Value is pre-populated based on heater size, but can also be manually configured.
	Heater Serial Number	[NOSERNUM]	Enter the 10-digit serial number of the indoor unit.
	Cycles Per Hour	2-6 CPH [5]
	Electric Heat Airflow	[Low]/Med/High
	Blower On Delay	No delay/15/30/45/[60] seconds	Select to enable or disable the blower on delay in hydronic heating.
	Blower Off Delay	No delay/30/[50]/70/90 seconds	Select to enable or disable the blower off delay in hydronic heating.
Compressor Operation	Minimum System Speed	[Factory]/ 30%/40%/50%
Compressor Cooling	Cycles Per Hour	2-6 CPH [3]
	Blower Off Delay	[No Delay]/Auto/ 30 seconds	Select to enable or disable the blower off delay in compressor cooling.
	Blower On Delay	[No Delay]/Auto/ 30 seconds	Select to enable or disable the blower on delay in compressor cooling.
	Minimum Indoor Coil Temp (°F)	28°F -60°F [30°F]
	Maximum Indoor Coil Temp (°F)	28°F -60°F [55°F]

Sub Menu         Menu Selection               Options [Default]             Description
Compressor Cooling	System Control	More Efficient/Efficient/ Balanced/ Comfort/ [More Comfort]
	Minimum CFM Per Ton	200-500 [250]
	Maximum CFM Per Ton	200-500 [500]	Minimum value based on Minimum CFM Per Ton setting. Maximum value based on Comp Cooling Maximum Airflow setting.
	Cooling Maximum Airflow (CFM)	[0]	Range varies per system settings.
Compressor Heating	Cycles Per Hour	2-6 CPH [3]
	Blower Off Delay	[No delay]/30/60/90 seconds
	Blower On Delay	[No delay]/15/30 seconds
	Heating Maximum RPM	[High]/Med/Low
	System Control	[Comfort]/Efficiency
	Comp Heat CFM Per Ton	290-450 [400]

Energy

Sub Menu         Menu Selection               Options [Default]             Description
Indoor Heat	Auxiliary Heat Lockout	Enabled/[Disabled]	Enable auxiliary heat lockout (10° minimum separation when enabling auxiliary heat lockout and compressor heat lockout).
	Auxiliary Heat Lockout Temp (°F)	32°F -70°F [45°F]	Select an outdoor temperature to prevent auxiliary heat above the selected outdoor temperature.
Compressor Heating	Compressor Heat Lockout	Enabled/[Disabled]	Enable compressor heat lockout (10° minimum separation when enabling auxiliary heat lockout and compressor heat lockout)
	Lockout Temperature (°F)	5°F -70°F [30°F]	Select an outdoor temperature to prevent compressor heating below the selected outdoor temperature.
Outdoor Unit	Power Factor Correction	Enabled/[Disabled]

Environment

Sub Menu	Menu Selection	Options [Default]	Description
Outdoor Unit	Reduce Electrical Interference	Enabled/[Disabled]
	Defrost Termination Temp (°F)	[Factory]/Medium/High

Accessories

Available accessory menu selections will vary based on the accessory type.

Sub Menu	Menu Selection	Options [Default]	Description
Accessory 1 & 2 Input	Accessory Type	[None], Air Cleaner, Powered/Bypass, Steam, Ext Dehum, Ventilator	Select the accessory type.
	Humidifier Action	[With Active Heat Call], Without Active Heat Call	Disabled for Air Cleaner accessory.
	Airflow During Humidifier Only Mode	35%-100% [50%]	Select the desired airflow when the humidifier is operating without an active call for heat.
	Dehum Type	[With Cool]/Stand alone	Defaulted to [With Cool] for Ext Dehum accessory.
	Dehum Fan Action	[Force Fan]/Normal
	Minimum Ventilation Run Time (mins)	1-60 [5]
	Ventilator Fan Action	[Ventilate With Blower]/ Ventilate Without Blower
	Outdoor Temperature Ventilation Override	[Disabled]/Enabled
	Max Outdoor Temperature	80°F – 110°F [85°F]
	Min Outdoor Temperature	-10°F to 50°F [0°F]
	Accumulate Overridden Run Time	[Disabled]/Enabled
	Accumulate Period	[4 hrs – Recover based on OD Conditions]/4 hrs – Recover to maintain Min Ventilation/24 hrs –  Recover based on OD Conditions/24 hrs –  Recover to maintain Min Ventilation
	Humidifier Control	[RH Control]/Frost Control	Not available for Ext Dehum accessory.

Sub Menu	Menu Selection	Options [Default]	Description
ID External Switch Input 1 & 2	Accessory Type	[None], Condensate- Cooling, Smoke Detector	Select the accessory type.
	Disable Compressor Cooling	[Disabled]/Enabled	Enabled by default for Condensate- Cooling and Smoke Detector accessories.
	Disable Compressor Heating	[Disabled]/Enabled	Enabled by default for Smoke Detector accessory.
	Disable Indoor Heating	[Disabled]/Enabled	Enabled by default for Smoke Detector accessory.
	Disable Fan Circulation	[Disabled]/Enabled	Enabled by default for Smoke Detector accessory.
	Limit Compressor Speed	[Disabled]/Enabled
Outdoor Load Shed	Accessory Type	[None], Load Shed, Generator Backup
	Disable Compressor Cooling	[Disabled]/Enabled	Enabled by default for the Load Shed accessory.
	Disable Compressor Heating	[Disabled]/Enabled	Enabled by default for the Load Shed accessory.
	Disable Indoor Heating	[Disabled]/Enabled	Enabled by default for the Load Shed and Generator Backup accessories.
	Disable Fan Circulation	Disabled/[Enabled]
	Limit Compressor Speed	[Disabled]/Enabled

Indoor Sensor Setup

View, edit and assign temperature and humidity sensors for the system.

Available Sensors

A list of all available sensors for the system will be displayed at the top of the Indoor Sensor Setup screen. Once a sensor has been assigned, it will be removed from the list of available sensors. The sensors from the communicating equipment will show up in the list automatically, but the wireless sensors must be added one by one.
Supported Indoor Sensors:

• UX360 Thermostat (Onboard Sensor)
• SC360 System Controller (Onboard Sensor)
• wireless Indoor Sensor (ZSENS930AW00MA)
• Wired Indoor Sensor (ZZSENSAL0400AA)

NOTE: The SC360 will only be included as an available sensor if it has been configured and installed in a controlled space. This setting can be modified from Technician Access > Configuration > Climate Control > SC360 System Controller.

Sensor Details

Select a specific sensor to view more details about the sensor and to assign it to the system. The details displayed may be different for different sensor types.
Sensor Details May Include:

• Assigned Status: if the sensor has been assigned to the system or not
• Use Temperature: enables/disables the use of the temperature sensor on the device
• Use Humidity: enables/disables the use of the humidity sensor on the device
• Battery: battery % on battery-powered sensors
• Status: communicating status with the system
• Serial Number: serial number of the sensor
• Model Number: model number of the sensor
• Sensor Name: sensor name can be changed to a default or custom name
• Temperature Weight: weight of the temperature sensor when being averaged with other sensors.

Assigning Sensors

To assign a sensor to the system:

1. Select the corresponding sensor under Available Sensors.
2. On the Sensor Details screen, select Assigned Status.
3. Select Assign and then Done.
4. The sensor will be assigned to the system and removed from the Available Sensors list.
5. Up to four sensors can be assigned to the system at a time.

Unassigning Sensors

To unassign a sensor:

1. Select the corresponding sensor under Available Sensors.
2. On the Sensor Details screen, select Assigned Status.
3. Select Unassign and then Done.
4. The sensor will be unassigned from the system and will be added back to the Available Sensors list.

Adding Wireless Sensors

ZSENS930 wireless sensors must be added to the system one at a time.
Follow these steps to add a new wireless sensor:

1. Select Add Wireless Sensor under the list of available sensors.
2. Press and release the INSTALL button on the back of the wireless sensor.
3. The LED on the back of the sensor will begin flashing.
4. Once successfully added, select a predefined name or enter a custom name and then select BACK.
5. Select Assign to assign the sensor to the system.

Removing Wireless Sensors

ZSENS930 wireless sensors must be removed from the system one at a time. The sensors must be online to be removed by the steps listed below.
Follow these steps to remove a wireless sensor:

1. From the list of Assigned Sensors, select the wireless sensor to be removed.
2. Scroll to the bottom of the Sensor Details screen and select Remove Wireless Sensor.
3. Press and release the INSTALL button on the back of the wireless sensor.
4. The LED on the back of the sensor will begin flashing.
5. When successfully removed, the sensor will no longer be in the Assigned Sensors list or the Available Sensors list.
   NOTE: After being removed, the wireless sensor would have to be added back to the system before it can be assigned as a sensor.

System Operation

Power-Up Sequence

When the UX360 is connected to the subbase, the thermostat initiates an 80 to 200-second power-up sequence. During the powerup sequence, the screen will remain dark for approximately 20 seconds and will then display ‘Initializing…’ above a progress bar for up to three minutes.

Service Reminders

Reminders can be enabled to send a notification when the configured reminder expires. A message will be displayed across the top of the display. The remainder is time-based and can be configured on a system run time or calendar days. Reminders can be configured for humidifiers, filters, ventilation systems, UV lights and HVAC system maintenance. The type of reminders available are based on the accessories enabled in the installer settings.

Software Updates

To take full advantage of the features and benefits of the UX360 Smart Thermostat, the latest software revision should be installed. An Internet connection to the SC360 SystemController is required for software updates. When the SC360 is connected to the Internet, software updates to the installed communicating equipment will occur automatically and do not require user intervention.

System Mode

The system has five System Modes that can be selected:

• Heating: system only operates in heating mode
• Cooling: system only operates in the cooling mode
• Off: the system will not operate in heating or cooling mode
• Emergency Heating: system will run the indoor heat source only (only available when the outdoor unit type is a heat pump)
• Auto: The mode of operation is automatically selected based on the following rules:
  • Heating – Indoor temperature is equal or less than the heating setpoint
  • Cooling – Indoor temperature is equal to or greater than the cooling setpoint or within 1°F of cooling setpoint
    There is a minimum deadband between heating and cooling setpoints of 3°F (4°F when zoning is applied).

Fan Mode
The system has three fan mode options:

• Auto: fan only runs with a call for heating or cooling
• On: fan runs continuously
• Circ: fan runs a user-selected minimum amount of time each hour 10.6 Air Cleaner Mode When an air cleaner is installed, the system has three Air Cleaner modes:
  • Auto: air cleaner operates only with a call for fan operation
  • Quick: air cleaner operates for 3 hours with blower at 100%
  • Allergy: air cleaner operates for 24-hours with blower at 100%

Test Modes

Certain tests may or may not be present depending on other menu settings and equipment installed. Select the Start button to run each test.

Menu Selection	Options	Description
Test Blower	300-1580 CFM	Energize indoor blower at the selected CFM. The range of values varies per Air Handler model.
Test Compressor Cool	Minimum-100%	Adjust % demand for compressor operation. The indoor blower will operate at the speed required for the selected % demand. The range of values is based on system configuration and ambient conditions.
Test Compressor Heat	Minimum-100%	Adjust % demand for compressor operation. The indoor blower will operate at the speed required for the selected % demand. The range of values is based on system configuration and ambient conditions.
Test Indoor Heat	Stage 1/ Stage 2/ Stage 3	Energize the selected stage of indoor heating. The indoor blower will operate at the speed required for the selected stage. The indoor heat test will run at maximum airflow for hydronic heat.
Charge Mode – Cooling	N/A	Energizes system to set/verify system charge. Use sub-cooling tables in the outdoor Service Facts to determine correct charge levels.
Check Charge Mode – Heating	N/A	Energizes the system to compare actual performance to typical performance. Use the pressure curves in the outdoor unit Service Facts for comparison.
Pump Down mode – Cooling	N/A	Pulses the latching switchover valve to the cooling position and runs at full compressor speed. Outdoor EEV will remain open and indoor EEV (if installed) will continue to control superheat.
Pump Down Mode – Heating	N/A	Pulses the latching switchover valve to the heating position and runs at full compressor speed. Outdoor EEV will control superheat and indoor EEV (if installed) will remain open.
Test Aux Relay	N/A	Enabled when Aux1/Aux2 accessories are configured for the system. Installed accessories will be displayed.

Equipment Summary

Certain tests may or may not be present depending on other menu settings and equipment installed.
Select the Start button to run each test.
The Equipment summary table is based on the installed communicating equipment and differs from system to system.
The following information per device is displayed:

• Status: identifies if the device is currently communicating on the system
• Description: name of the device
• Model: model number of the device
• Serial: serial number of the device

Alerts

The UX360 displays two sets of alerts:

• Current Alerts: alerts that are currently active
• Alert History: alerts that have been cleared in the last 30 days
  Each alert in the history will display the date the alert was cleared. Current alerts will display the date when the alert was triggered.
  Select an alert code to view additional information on that alert as well as a list of possible causes.
  All alerts are categorized by severity:

Critical

• Loss of heating/cooling operation
• The service call is required
• Alert notifications are displayed on the home screen

Major

• Reduced functionality – minimum operation is possible
• The service call is not immediately required
• Alert notifications are not displayed on the home screen

Normal

• Functionality may be lost but should recover or the information is for diagnostic purposes/ performance monitoring
• The service call is not required
• Alert notifications are not displayed on the home screen.

Troubleshooting

Symptom	Possible Causes	Action
UX360 displays an alert on the screen	A critical or major alert is present.	Navigate to the Alerts screen for a problem description and possible cause. Menu > System Info > Alerts
The display will not come on	Loss of 24VAC between R & B at the UX360 Control.	1.       Check wiring between R & B. 2.       Check the transformer for 24VAC output. 3.      Check for broken or shorted thermostat wires.
The indoor temperature display is incorrect	1.      Indoor temperature display needs calibration. 2.      Surrounding air flow affecting the sensed temperature of the UX360.	Calibrate the temperature sensor from the UX360 menu.
The indoor humidity display is incorrect	The indoor humidity display needs calibration.	Calibrate the humidity sensor from the UX360 menu.
The heating will not come on	1.      System mode is not set to Heat/ Auto or setpoint is set too low. 2.      Minimum off-time delay is being enforced. 3.       Heating system may require service.	1.    Set mode to heat and raise the setpoint above the room temperature. 2.    Wait 5 minutes and recheck the heating equipment. 3.    Check/repair the system.

Symptom	Possible Causes	Action
Cooling will not come on	1.      System mode is not set to Cool/ Auto or the setpoint is too high. 2.      Minimum off-time delay is being enforced. 3.      Cooling system may require service.	1.    Set mode to cool and lower the setpoint below the room temperature. 2.    Wait 5 minutes and recheck the cooling equipment. 3.     Check/repair the system.
Heating or Cooling is displayed, but no warm or cool air is coming from the registers	1.      Fan delay as the heating or cooling equipment turns on. 2.      Equipment is not working properly.	1.    Wait a minute for blower delays and recheck registers. 2.    Check/repair the system.
The fan runs all the time	1.      Fan mode is set to On, Circulate, or Clean mode. 2.      There is a failure in the indoor unit.	1.    Check UX360 settings to see if fan is set to On, Circulate, or Clean mode. 2.    Check the indoor unit for failures (such as tripped heating limit).
“+” symbol appears on Home Screen beneath Indoor Temperature readout	Both compressor heat and indoor heat are called simultaneously	No action is required. The symbol is for informational purposes only.
The fan is set to ON but not running	1.      Smart Control Fan feature has been engaged. 2.      Blower motor is not functioning.	1.    If indoor humidity is higher than the desired setpoint, the blower will cycle off with the equipment. A humidity icon will be displayed on the Fan Mode button when the blower operation is being inhibited due to high humidity. 2.    Check/repair the system.
Cooling or Heating cycles too fast or too slow (narrow or wide temperature swings)	1.      Check the location of the UX360 for drafts. 2.      Cycles per hour or aggressive recovery is improperly set.	1.    Seal air leaks behind UX360. Relocate UX360 or apply a remote indoor temperature sensor. 2.    Adjust cycle rates and aggressive recovery features in the advanced installer setup.
A heat pump is not turning on; only the furnace or electric heat strips are running	1.      Outdoor temperature is below compressor lockout temperature setting. 2.      Compressor heating lockout is enabled and the outdoor temp sensor is out of calibration or failed. 3.      The outdoor unit is not reporting.	1.    Adjust the compressor lockout temperature setting if desired. 2.    Check/repair outdoor sensors or wiring. 3.    Check the communication status of the outdoor unit.
Cannot change system mode to the desired setting	The equipment is not configured properly.	Check the Configuration screen to ensure the equipment is properly configured.
The screen does not respond properly to a button press	1.      Internal UX360 hardware failure. 2.      Screen Lock has been enabled.	1.      Remove UX360 from the sub-base and reset. 2.      Press and hold the Menu button for 5 seconds to override the screen lock.

Symptom	Possible Causes	Action
The screen goes blank after a period time of inactivity	Screen Saver mode set to “Black” which turns off the screen backlight after a user-selected period of inactivity.	Normal operation. User may change the screen saver from “Black” to “Indoor Temperature” or increase the time before the screen saver is activated.
The time set on UX360 changes every 24 hours.	UX360 is connected to Trane Home and the time zone set from the Trane Home account is incorrect.	Correct the time zone from the Trane Home account.

Trane – by Trane Technologies (NYSE: TT), a global climate innovator – creates comfortable, energy-efficient indoor environments for commercial and residential applications. For more information, please visit trane.com or tranetechnologies.com.
Trane has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

Representative-only illustrations are included in this document.

18-HD98D1-1B-EN 24 Feb 2022
Supersedes 18-HD98D1-1A-EN (August 2021)

REFERENCE:

Download Manual:

Trane Link UX360 Smart Thermostat Installation Guide

 

Trane Link UX360 Smart Thermostat Installation Guide