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How do I run mu A/C blower with my furnace being used to help circulate the air

Want to run my ac blower at the same time I run my furnace

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  • 560 Answers

Put the switch on the thermostat on, "Fan"

Posted on Nov 15, 2014

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: intertherm furnace

That is a stack limit switch. You are not venting properly. Is your unit power ventilated or gravity fed?

Posted on Nov 28, 2007

  • 230 Answers

SOURCE: blower motor in home air conditioner does not work

The most common failure for this problem is either the start/run capacitor or the fan motor. IF YOU ARE NOT experienced with electricity then I would strongly suggest hiring a technician. The volts are 220 with a potential of 50 amps in a common residential unit.

If you are knowledgeable in this area then make sure the motor has volts to it. If it does have volts and does not spin, it is bad. You can sometimes tell by feeling the motor it will probably be very hot. The compressor will eventually shut itself off when it over heats. It usually will restart after it cools down(sometimes many hours). The motor and capacitor are pretty generic and can be matched up at a local Grainger store or whatever Retail, specialty store that you have in your area.

I hope this helps:)

Posted on Jun 25, 2008

jumptrout51
  • 3361 Answers

SOURCE: Furnace runs OK, but blower runs again a few seconds later

Could be a defective thermostat in the plenum.
When a gas furnace shuts down the fan(blower) will run until the plenum cools to the safe range. Usually 1 and 1/2 minutes.
Intermittent operation is a defective thermostat or relay.

Posted on Mar 11, 2009

co7196
  • 3433 Answers

SOURCE: AC unit turns on blower doesn't come on

The thermostat is the controller.

Posted on Jun 19, 2009

  • 1 Answer

SOURCE: Furnace comes on for 1 min then kicks off, repeats this cycle

MY FURNACE WOULD RUN FOR ABOUT TWO MINUTES , THEN THE BURNER WOULD GO OUT BUT THE BLOWER WOULD CONTINUE TO RUN , LONG ENOUGH TO COOL THE FAN LIMIT SWITCH DOWN , THEN IT WOULD START THE PROCESS ALL OVER. WHAT FIXED MY PROBLEM WAS THE SECONDARY HEAT EXCHANGER THAT IS LOCATED JUST ABOVE MY BLOWER MOTOR WAS PLUGGED WITH DIRT , WHICH RESTRICTED THE AIR FLOW , CAUSING THE FAN LIMIT SWITCH TO REACH 200 DEGREES AND SHUT THE BURNER DOWN . YOU'LL HAVE TO TAKE THE BLOWER MOTOR OUT TO GET TO IT , BUT MY FURNACE IS RUNNING PERFECT NOW

Posted on Jan 11, 2010

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Miller furnace model M3RL080 BW, code flashes open limit switch or external load on W, I bought a new limit switch, the furnace runs for 5-10 minutes then the flame goes out, the blower keeps running and...


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Oct 25, 2009 | Heating & Cooling

1 Answer

Aprilaire


Commonly outdoor wood boilers use a hot water coil mounted in the ductwork above your furnace. In this application the Ruud furnace is still using its blower assembly to circulate the warm air from the boiler to your home. If this is the case. Have your heating guy install a #50 relay on the furnaces blower motor to activate your much needed humidifier. If this is not the case and your Ruud furnace is totally independent of the boiler. Still install the #50 relay in the furnace and manualy activate the fan only feature on your thermostat.
Good luck
HVAC Teacher

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