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  1. #1

    Trane XL80 2 Stage

    I have a 7 year old Trane xl80 2 stage furnace and recently purchased a new thermostat (a Nest). I noticed the old thermostat was installed jumping W1 and W2 at the motherboard of the furnace. My question is this: Should I keep it jumped and let the furnace handle the stages or remove the jumper and hook up the w1 and w2 wires on the t-stat? Thanks guys!

  2. #2
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    I would suggest removing the jumper and let the stat do it..... if you have a 2 stage gas valve and W1-w2 is jumped you now have a single stage valve.....
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  3. #3
    Join Date
    Oct 2004
    Location
    Texas
    Posts
    1,172
    Ditto what carmon said
    Saddle Up!

  4. #4
    Join Date
    Jul 2007
    Location
    Mount Airy, MD
    Posts
    7,278
    Thread relocated to AOP

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