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-   -   White rodgers heat pump thermostate 2477c which terminal is ground (https://www.askmehelpdesk.com/showthread.php?t=519252)

  • Oct 22, 2010, 03:55 PM
    pad41ken
    White rodgers heat pump thermostate 2477c which terminal is ground
  • Oct 22, 2010, 04:14 PM
    wmproop
    Have you got the install instructions? I never seen a tstat that needed a ground
  • Oct 22, 2010, 05:00 PM
    pad41ken
    Comment on wmproop's post
    Yes I have the instructions, it does not specify which terminal is used for the common. (c)
  • Oct 22, 2010, 05:28 PM
    wmproop
    OK,, common,that's not a ground,, can you tell us the lables on/beside each post of the WR tstat
  • Oct 22, 2010, 05:38 PM
    pad41ken
    Comment on wmproop's post
    I have r,y,g,e,o,b,L,x1,w2
  • Oct 22, 2010, 05:53 PM
    wmproop
    What does the instruction sheet tell you the b post is used for?
    Some tstats don`t need or call for a common post,the common post is mostly used to return the low voltage (24V) back to circuit board so as there will be no need to use or worry about changing batteries
  • Oct 22, 2010, 05:58 PM
    pad41ken
    Comment on wmproop's post
    B is for the reversing valve if energizing in heat.
  • Oct 22, 2010, 06:29 PM
    pad41ken
    Comment on wmproop's post
    O is for the reversing valve if energized in cool

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