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Unit turns on but furnace won't come on. AC works,

Carrier Air V unit turns on but furnace won't come on. AC works, fan works and dry mode works, just no heat part. replaced batteries & reset.

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See if your t-stat is calling for heat take a jumper wire from terminal r to w on the board if the heat comes on replace the t-stat

Posted on Feb 07, 2010

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Posted on Jan 02, 2017

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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

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Carrier electric furnace (air handler) stopped running


The 5 amp fuse may be bad, they go quite often, and they are exactly the same as the car ones. Check the fuse with a meter. If its OK turn the unit on and check for voltage going to the blower fan. You should get a reading between at least one pair of wires. The unit should have a schematic on it somewhere, check it to see which wire pairs are used for the variable speeds of the fan.

Nov 08, 2014 | Heating & Cooling

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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

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I have a suburban lp furnace and duotherm air/heat pump roof unit. duothern thermostat. 20 amp breaker kicked ( reset breaker) & furnace quit. NOW furnace fan comes on but does not light, and the front...


I'm not sure what the problem may be but you could try calling All Seasons RV Appliance Parts & Service. There number is 1-800-344-0673 they have helped me in the past. That and there tech calls are free so it wouldn't hurt to give them a call.

Jan 23, 2010 | Dometic Rooftop RV Air Conditioner

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Carrier 38CKC042300. oUTSIDE UNIT FAN WAS TURNING REAL SLOW. ac UNIT IS OFF BUT FAN TO OUTSIDE UNIT IS STILL TURNING. sHOULD NOT BE TURNING AT ALL WITH AC UNIT OFF


The outside fan may run if the unit is in defrost mode this is normal for most heat pumps it is there way of trying to keep the outside unit from staying iced over so the next time the unit runs it will have air flow through the coil and the ice will not be there to prevent air flow.

Jan 12, 2010 | Carrier 38CKC042 Air Conditioner

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Problem with carrier heat pump


Check the relays on the main board of your blower/furnace. If one is stuck, then the unit will not change from ac to heat. You may need to replace the entire board.

Dec 11, 2008 | Carrier 38CKC042 Air Conditioner

1 Answer

Carrier Weathermaker SX model 58SX060-CC Blower runs all the time


Remove all power from the furnace, it is likely the brain in the furnace is need of being reset, from the battery replacement, why did you change the battery, was there an indicator telling you to change it?

Many times just removing all the power to the furnace will do the trick with a reset, if not let me know and we will go from there, but it sounds like the main brain is confused or bad, more likely confused, so try the power removed first.

Than let me know wbwill@sbcglobal.net

Oct 22, 2008 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

BDP furnace + model 585A030080YACR


Sounds like your indoor fan motor is not working, check either the cap or the indoor fan motor it's self.

Jun 26, 2008 | Carrier Heating & Cooling

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