York LX series Owner's Manual

Also see for LX series: Technical guide Technical guide Technical guide Technical guide Installation manual

Contents

Page 14Test OperationPress MODE to view the version numbers of the thermostat.Installation Instructions:To enter Technician Setup, press and hold the SETUP button for 5 seconds untilall the icons appear. Follow the next steps to view settings and test equipment.Press MODE again to view the jumper settings and current state ofthe Dry Contact and Fault terminals.Press MODE again and the scrolling display will read “TURN ONEQUIPMENT?” Press WARMER for Yes or COOLER for No.The LX thermostat has a diagnostic feature that enables testing of alloutputs. This feature is contained in Technician Setup.If Yes is chosen, press WARMER to turn on heat or COOLER to turnon Cooling. The scrolling display will read “NOTHING ON.” Next:Press WARMER to turn on and cycle up through the heating stages.Press COOLER to turn the heating stages off. Press MODE to exit.Press COOLER to turn on and cycle down through the cooling stages.Press WARMER to turn the cooling stages off. Press MODE to exit.1.2.3.Press MODE until “CALIBRATE SENSORS?” appears on the scroll-ing display. Press WARMER for Yes or COOLER for No. PressMODE to select which sensor to calibrate. Use WARMER or COOL-ER to modify your selection.4.Press MODE until “CONTROL HUM?” appears on the scrolling dis-play. Press WARMER for On or COOLER for Off. Press MODE tocontinue.5.Press MODE until “CONTROL DEHUM?” appears on the scrollingdisplay. Press WARMER for On or COOLER for Off. Press MODEto continue.6.Press MODE until “CONTROL AUX OUT?” appears on the scrollingdisplay. Press WARMER for On or COOLER for Off. Press MODEto exit.7.To exit Technician Setup at any time, press the SETUP button. Technician Setupwill automatically exit after 10 minutes if no buttons are pressed.