So the repair guy said to calibrate it- to add 4 degrees as it was 81 in the house and tstat set for 77. Get Instant Quality Info. The Indoor Temperature Or Humidity Displayed On My Thermostat Isn T Correct How Do I Calibrate It Nexia Home The Indoor Temperature or Humidity Displayed on My. Trane xl824 thermostat calibration . Trane XL824 Smart Control User Guide The XL824 is an easy-to-use programmable control with a color touch-screen. Screen does not respond to button pushes screen is out of calibration Remove control from subbase and reset. Room temperature overshoots when the HeatCool setting is changed more than 2. Press the WPS button on your router then return to your XL824 to WiFI Network. Trane xl824 thermostat screen calibration. Trane XL824 Outdoor Temp Sensor - HVAC-Talk. WPS for Wi-Fi connection Wi-Fi Step 1. How to program the Trane XL824 thermostat. If the voltage is good on the RC and RH terminals and you test with the other wire removed it may be...