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Carrier furnace cr16-21-2ff blower motor will not activate in conjunction air conditioning unit, works fine in "heat" mode. air con unit is operating normal pipe is very cold at furnace

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5 Suggested Answers

  • 86 Answers

SOURCE: carrier 8000

send model no. n manual

Posted on Mar 17, 2008


  • 18 Answers

SOURCE: I have a Ruud Silhoulette

Could be a bad fan control board or the motor. Need to see if you have power to the motor from the board

Posted on Jul 06, 2008

solveditnow
  • 39 Answers

SOURCE: (HVAC) Furnace Not Igniting Quickly

Make sure a back draft in the flue is not happening. Wind can blow it out until the flue heats up. The flame sensor may not be close enough to the burner flame. It may be weak and need to be replaced or if its an optical one it may be dirty and not see the flame very well. Its not wasting much gas but it puts extra wear and tear on the gas controls, is noisy, and, as you said, blows cold drafty air. A gas control system that has issues of any kind is not real safe. It needs to get fixed.

Posted on Jan 08, 2009

dmftrucker
  • 1922 Answers

SOURCE: Carrier furnace 58gpa075 - CA blower/capacitor issue

the cap is usually next to the contactor on the outside unit and most are dual caos one terminal for fan marked "F" and one marked "H" for hermetic compressor and will have 2 mfd ratings at 370volt or 440 volt a.c. operation

Posted on Sep 26, 2009

  • 1033 Answers

SOURCE: Carrier furnace fan works in

First take off the thermostat cover and turn off power to unit jump the R,G Y wires at the thermostat subbase with power back on, if the fan starts up then the thermostat is bad and must be replaced. If it still does not start then the relay on the control board is bad and must be replaced.

Posted on Jun 25, 2011

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Can not get fan on to turn on. All else fine. heat only furnace. No air conditioning...only air circulation.I used to set it on "Cool" and "Fan On"and get air to circulate. Do I need new thermostat?


Since you have two thermostats that operate the heating unit and the fan, and the fact that neither will turn the blower on, I would suspect the furnace/ air handler. Turn the thermostat to heat and see if the heat and the fan comes on, if it does operate normally in heat, the fan relay or the high speed on the blower is most likely the culprit. (If the furnace is equipped with a circuit board, the fan relay is integral to the board, if it an older furnace it has a separate fan relay). If it does not operate normally in the heating mode, verify power to the furnace, see if the flame comes on, if it does: the fan motor, circuit board or the fan relay are most likely the cause. hope this helps!

Jul 20, 2015 | Heating & Cooling

1 Answer

My blower on my carrier furnace unit won't turn off? a/c or heater doen't turn on.


gas furnace??? check the start capacitor, put unit in ac mode and see if fan comes on(switch fan to on at thermostat) if it does not a fan problem or capacitor problem. when in cooling mode thermostat controls fan, when in heating mode, furnace controls fan

Feb 18, 2015 | Carrier Heating & Cooling

2 Answers

I have a Carrier 58PAV model furnace and the blower is not engaging when I turn either the furnace or AC on. It worked fine last weekend. I have powered the unit off and let it sit for 5 minutes and then...


The only thing you can do at this point is
  1. Hookup a volt meter to the power lines running to the blower motor
  2. Turn the a/c on
  3. You should have voltage on at least 1 wire.
  4. Most motors have multiple speeds so you must check (red - blue - black) wires. My suspicion is that your motor is done.

Jun 26, 2011 | Carrier 38CKC042 Air Conditioner

1 Answer

I have a technical question regarding implementation of my Carrier furnace within my residence. Specifically, the furnance has been installed for 17 years and I have not had any problems with it. I have...


Thats a safety.

The unit senses a failure to ignite, so it goes into safety mode keeping the blower running to prevent overheating and fires. And keeping the inducer motor running to prevent the same, as well as raw gas build up inside the unit.

The newer systems are "smarter" and can detect more specific problems and failures. The older ones simply know that the thing didn't light, so they bring on the fans for safety.


Jan 01, 2010 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

Carrier 58 Series Furnace Blower Motor Won't Shut Off


Yes. If the high limit is tripped, the furnace will bring on the fan continuously until the limit resets. Often, they will not reset if tripped repeatedly. If the furnace is too large for your application, you probably are not able to move enough air to keep the heat exchanger cool enough.

Oct 03, 2009 | Heating & Cooling

1 Answer

Knock Noise When Carrier Furance Starts Up


have the ac company check the actual blower wheel itself it may be slowly coming apart

Apr 20, 2009 | Carrier Heating & Cooling

1 Answer

No air conditioning unit inop


you lost your 24v check the transformer at the furnace at R and C treminals see if you have 24v if not your transformer is gone but you also have to have the door switch on the blower section closed and check incoming power as well

Aug 17, 2008 | Carrier 38BRC048 Air Conditioner

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