Results 1 to 6 of 6
  1. #1
    Join Date
    Jul 2006
    Location
    Duncan
    Posts
    134
    I recently installed an american standard 4 ton 14 seer 2 stage variable speed gas furnace. After installing it I noticed that the air comming out of the vents was very low. After scratching my head for 3 day and talking to tech support I finnily figured out the Problem. The polarity was reversed on the indoor unit. After I changed the polarity the blower blew like a champ. Has anybody ever heard of this?

  2. #2
    Join Date
    May 2006
    Location
    east central indiana
    Posts
    1,117
    That would be the same effect as if you had the blower running in reverse. I'm a little suprised that the furnace would let itself run, ours (Carrier) tell you if the polarity is reversed, I thought they were all like this.

  3. #3
    Join Date
    Jul 2006
    Location
    Duncan
    Posts
    134
    I did not think that the polarity affected the blower motor there for I did not check it righ away and yes the control board told me that the polarity was reversed.

  4. #4
    Join Date
    Nov 2005
    Posts
    1,350
    i was not aware A.S. was making 14 seer gas furnaces.

  5. #5
    Join Date
    May 2006
    Location
    Raleigh,NC.
    Posts
    357

    everything, and i mean everthing

    for the last 10 yrs is polarity sensitive and ground sensitive. have had to drive copper in the ground and solder gruond wire to the end of it to get proper ground for furns.
    remember, with electronics; when its brown,its cooking and when its black, its done!!!

  6. #6
    Join Date
    Jul 2006
    Location
    Duncan
    Posts
    134
    I did not mean 14 seer gas furnace I meant a 14 seer air conditioning with a gas furnace.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event