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Induction motor

Posted by Brent Stone on October 26th, 2002 12:40 PM
In reply to Furnace Repair by Harold Kestenholz - Hydronic Network on September 19th, 2000 06:10 PM [Go to top of thread]

I have a Ultra SX80 forced air furnace. My induction motor keeps cycling on & off after the call for heat has ended. Everything works fine until immediately after the end of the normal cycle and then the induction motor starts again. I called a repair man and he told me it was a bad thermostat. I changed it and it didn't correct the problem. There is a vacuum comming off the induction motor to a pressure switch. If I hold a vacuum on this pressure switch, it shuts the system off and appears to be normal. I'm not sure what is causing it to restart, a loss of vacuum on the pressure switch or a control board problem. Can you help? Thanks Brent

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Topic History:

  • oil furnace by Marsha  9/19/00 10:25 AM (: 1, : 0)
  • Furnace Repair by Harold Kestenholz - Hydronic Network  9/19/00 06:10 PM

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