Trane TCONT900AC43UA User Manual (English)

Other manuals for Trane TCONT900AC43UA

Service Guide336 pages

Installer's Guide24 pages

Questions and Answers:

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Bryan RoseAug 21, 2025
What to do if the display on my Trane TCONT900AC43UA will not come on?
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  Nicole StevensAug 21, 2025
  If the Trane Control Panel display won't turn on, there are several potential causes: * A blown fuse or tripped circuit breaker: Replace the fuse or reset the breaker. * The indoor unit power switch is OFF: Turn the power switch to ON. * The indoor unit blower compartment door or panel is loose or not properly installed: Replace the door panel in the proper position to engage the safety interlock or door switch on the furnace. * A wire is broken/shorted, or R and D or B and D are reversed: Check the R, B, D wiring.
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Cathy BrownAug 22, 2025
Why is the heating not coming on with my Trane Control Panel?
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  Megan BensonAug 23, 2025
  If your Trane Control Panel is not turning on the heat, consider the following: * Ensure the System Mode is set to Heat and that the setpoint is raised above the room temperature. * If the heating doesn't start within 5 minutes, inspect the heating equipment. * Check and repair any loose connections to the control or system. * The heating system may require professional repair.
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Darrell ChristensenAug 25, 2025
Why is the cooling not coming on with my Trane TCONT900AC43UA?
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  Nathan MillsAug 25, 2025
  If your Trane Control Panel is not activating the cooling, here's what to check: * Make sure the System Mode is set to Cool and lower the setpoint below the room temperature. * If cooling doesn't start within 15 minutes, examine the cooling equipment. * Inspect and fix any loose connections to the control or system. * The cooling system might need professional repair.
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Megan MurphyAug 26, 2025
How to fix temperature setting if it will not change on Trane TCONT900AC43UA Control Panel?
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  Raymond AndersonAug 27, 2025
  If you cannot adjust the temperature settings on your Trane Control Panel, consider these possibilities: * You may have reached the upper or lower temperature limits. Check the heating limits (ISU 0600), which are between 40°F - 90°F (4.4°C - 32.2°C), and the cooling limits (ISU 0610), which are between 60°F - 99°F (15.5°C - 32.2°C). * The keys may be fully locked, with “Screen Locked” displayed on the LCD. If so, unlock the keypad using ISU 0670.
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kyle88Aug 27, 2025
Why does the fan run all the time on my Trane TCONT900AC43UA?
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  Dawn WilliamsAug 28, 2025
  If the fan is constantly running on your Trane Control Panel, here are a few things to check: * The fan mode might be set to ON - continuous. Change the fan mode to AUTO or CIRC. * The fan might be scheduled to run continuously. Reprogram the fan schedule if desired. * The indoor equipment may need service. Check the indoor equipment.
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Rhonda HansonAug 29, 2025
What to do if Trane TCONT900AC43UA Control Panel does not respond to keypad screen presses?
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  Jennifer ArnoldAug 29, 2025
  If your Trane Control Panel isn't responding to keypad presses: * Check if the keys are locked; if “Screen Locked” is displayed, unlock the keypad using ISU 0670. * The control might need replacement due to keypad failure.
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michellecoxAug 31, 2025
Why outdoor temperature is not displayed on Trane TCONT900AC43UA?
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  Chelsea MoralesAug 31, 2025
  If the outdoor temperature display on your Trane Control Panel shows “--” or isn't displaying, check the following: * The outdoor temperature sensor might be open, shorted, not reporting, or not installed. Replace or install the outdoor sensor. * The outdoor sensor field wiring might be open or shorted. Check and repair the outdoor sensor field wiring.
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blewisSep 1, 2025
What to do if heat or cool is on but no air is coming from Trane registers?
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  melissa21Sep 2, 2025
  If your Trane Control Panel displays Heat ON or Cool ON, but there's no air coming from the registers: * Wait one minute after Heat ON is displayed, then check the registers, as the heating equipment might turn on the fan when the furnace has warmed up. * Check the heating and/or cooling equipment to ensure it's operating correctly.
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Danny CaseySep 3, 2025
How to calibrate indoor temperature display on Trane TCONT900AC43UA?
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  Craig DiazSep 3, 2025
  If the indoor temperature display on your Trane Control Panel is incorrect, the temperature display might need calibration using ISU 0700.
C
Cathy PattersonSep 5, 2025
How to calibrate indoor humidity display on Trane Control Panel?
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  John LopezSep 5, 2025
  If the indoor humidity display on your Trane Control Panel is incorrect, calibrate the sensor using ISU 0701.

Trane TCONT900AC43UA Specifications

General

Compatibility	Compatible with most HVAC systems
Display	Touchscreen
Wi-Fi Enabled	Yes
Programmable	Yes
Energy Star Certified	Yes
Connectivity	Wi-Fi
Remote Access	Yes
Indoor Humidity Control	Yes
Energy Monitoring	Yes
Backlight	Yes
Mounting	Wall-mounted
Series	900
Power Source	24V
Stages	Up to 2 Heat, 2 Cool