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I have an olsen hds 90t furnace.i replaced the 50a50-216 control with a new 50m56-843 control.everything seems to function normally except that the heat delay to fan off is 30 sec. Instead of what it's supposed to be (150 sec) .what could be the problem? Is something wired up wrong?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

boanhtgclg
  • 34 Answers

SOURCE: New honeywell thermostat on new gas furnace not working

sometimes there's a differential setting anywhere from 1-3 degrees, see if you can make sure it's down to 1

Posted on Nov 12, 2008

boanhtgclg
  • 34 Answers

SOURCE: Auto fan does not turn my furnace fan on-I have to use manual on

with the fan in the auto position, the fan only comes on during a demand for heat.  does it not come on during a demand for heat?

Posted on Nov 24, 2008

  • 189 Answers

SOURCE: Old mercury thermostat, New furnace wiring issues

Two wire hookup on the old thermostat tells me that it was set up for heating only. You will most likely need a modern thermostat. But in the meantime try this with the old one. The two red wires on the furnace are probably Rh & Rc. If so these can be put "together" on the R terminal on the old stat. The two W's on the new furnace are probably W1 &v W2 This is for first and second stage heat. You can put the two "together" on the W terminal on the old stat. Do not hook up the greens (blower fan wires). Do not hook up the blue wires (They would go to the Y terminal on a modern stat for airconditioning.
Who ever sold you the furnace should have offered you a new thermostat.
Good luck....

Posted on Apr 10, 2009

wcrawf11
  • 52 Answers

SOURCE: Honeywell 7600. When the setpoint is reduced to

Go to http://www.honeywell.com/ look up your therostst model No RTH7600D

Posted on Oct 24, 2009

  • 66 Answers

SOURCE: Goodman gmp075-3 gas furnace and the flame cycles

you need the same board. the one you have is not compatible with your unit

Greg

Posted on Dec 15, 2009

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