23 Mei 2012 - Our system is a Trane TWX036C100A0 (outside) with an XL1200 heat pump, Aprilaire Model 110 compressor with model# TWV042B140A1 . 7 Okt 2010 - The way you have it wired is correct except for the having brown on e. Here is a Trane Weathertron BAYSTAT240 thermostat wiring picture. 26 Mei 2012 - And this one is compatible with the Trane XL 1200 model that I have? . I now would like to confirm the correct wiring of the new thermostat, and . 11 Okt 2014 - Only thing is orange and brown run from the heat pump and it didn't seem to operate properly with that wiring setup. Also, on the nest, there is . I have a trane xl 1200 heat pump/ac unit. The circuit . The fan and inside unit/thermostat are on and working. The outside . This is thermostat wire. It wants to . I'm going in circles trying to figure out this wiring. Here's the deal. My OLD thermostat wiring: (TRANE) [image](http://imgur.com/gHrOo6b) . Browse Trane's digital thermostats with temperature control systems featuring the latest technology. Choose a programmable thermostat for superior comfort. 20 Jun 2011 - I replaced my old Trane WeatherTron thermostat with a new . Since it took a lot research and verifying to find where all the wires from the old unit Outside unit is a XL 1200 Weathertron and inside is a XL 90 .on propane.