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Coleman-blower motor contiuesly on even when t-stat is not calling for heat? Suspect relay on control board stuck closed?

All-roll-out switches test good,limit test good,power good from secondary transformer! t-stat rests good.correct polarity!

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Hello, the relay on the intergrated control board is stuck. Unfortunatly the relay is part of the board, so the entire control board must be replaced.

Posted on Dec 03, 2012

  • milton morales Dec 03, 2012

    Gosh Robert! That was Fast thanks-ah-bunch I really appriciate your help! Respectfully Milton.....



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Posted on Jan 02, 2017

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SOURCE: Goodman GMH950904CXAC

make sure the blower is not set on rather than auto or the blower will run all the time. You might want to disconnect the thermostat and test the low voltage circuit to make sure the wires are not shorted

Posted on Aug 12, 2009

  • 1420 Answers

SOURCE: Coleman furnace blower runs continuously

You should be seeing 120 volts to the igniter. Anything less requires either a replacement of the transformer, start relay or control module.

Posted on May 30, 2008

  • 89 Answers

SOURCE: GMPN 100-4 furnace. Blower motor runs when not calling for heat.

The board is bad. The unit thinks a flame is present, so it tells the blower to come on. Replace the board.

Posted on Oct 08, 2009

  • 59 Answers

SOURCE: I have a Goodman GMP075-3. Worked OK on A/C.

I come across this one a lot. You need to switch the wires at power cord.

  1. Pull power out
  2. follow the cord* back to the furnace
  3. Open the front door
  4. There should be a small metal box where the cord leads to inside the furnace
  5. Open that up
  6. Take the electrical tape off
  7. Pay attention to which wire goes where
  8. Switch the two wires around
If you still got problems ill walk you through it over the phone

Posted on Oct 12, 2009

  • 118 Answers

SOURCE: bad control board?

bad board

Posted on Oct 22, 2009

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