Question about Carrier 38CKC042 Air Conditioner

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Unit comes on fan does not spin

If fan is manually started to spin unit runs

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Your capacitor on the fan side is blown but that particular model needs a dual capacitor. Don't run the fan too long like that you will overheat the windings and melt her down.

Posted on Jun 30, 2009

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1 Answer

My outside amana prestige ac unit ( rcb30c2a) gets very hot when it is turned on, but the fan does not turn.


Hello, try spinning the outside fan with a stick or a small object you can spin the fsn blades with, if this gets the motor running the capacitor must be replaced. If the motor does not start by manually pushing it the motor will have to be replaced.

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Rheem condenser fan don't spin up under it'sown power.


If you have a multimeter that tests "uf" or "mfd" that is microfarads. That will test the capacitor. Turn off power to unit, touch top of cap with insulated screwdriver across terminals to discharge and remove fan and common. MARK WHICH WIRES GO WHERE. Or if no mfds on multimeter, amps×2650÷volts=mfd. Amp draw on fan wire off of cap times 2650 divided by the volts between common and fan on the cap. If cap is good it's likely the motor.

Apr 12, 2017 | Heating & Cooling

1 Answer

My RUDD central a/c keeps cutting off, the inside vents still have air coming out of them but not cold. When I go to check the outside unit it is either completely off or running but the top fan is not...


The switch that you are resetting is the manual reset high pressure switch. It is there for a reason, to tell you something is wrong. You having to start fan manually tells me that the fan run capictor is bad. Get the capictor changed. If you keep resetting the switch you could burn out the compressor, doesnt make any sense to burn up a 800.00 compressor for a 10.00 item. hope this helps.

Jul 07, 2011 | Heating & Cooling

1 Answer

My air conditioner has stop working its blowing air inside but the fan is not spinning outside .....


If the fan is not running is the compressor not running also...if neither is running the possible reasons are 1..no power to outside unit...2..bad contactor on outside unit.is this buzzing if it is this indicates no power...3 bad capacitor,do both compressor and fan humm then quit humming and hum some more...4 high pressure switch has shut unit down because fan wasnt running if compressor was running but not fan....if your unit has this there will be a manual reset button where the lines come out of unit...if compressor was running and fan was not...1 bad fan...2 bad capacitor.. if you do not have any electrical knowhow i would recommend calling a hvac tech to come and fix unit...Thanks

Feb 01, 2011 | Samsung AS18A6RB Air Conditioner

1 Answer

The outside unit is no0t able to start the fan spinning on its own. I have been able to manually engage the outside fan by turning the unit off, turning it on, and then manually spinning the fan when it...


Hi!!
The part you need is called STARTING CAPACITOR and it is located in the same compartment where the electrical connectors are in the outside unit. MAKE SURE THE POWER BREAKER IS OFF before opening the compartment. and before working with the capacitor, touch both terminals with a screw driver to short them out and discharge the capacitor. Don't worry this is just a preventive measure and no sparks are going to be coming out of it. Once the capacitor is discharged, take a picture of the wiring and label them before disconnecting the wires. Remove capacitor and take to an appliance parts store to get a new one.
HERE IS A PIC. OF HOW A CAPACITOR LOOKS LIKE

1kbron_14.jpg

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Nov 12, 2010 | Heating & Cooling

1 Answer

Fan will not spin on it's own. I must take the vent cover off and spin the fan manually. I think I need to replace the capacitor (sp) but don't know what it looks like.


If the fan is a capacitor start, induction run motor, then it is a good chance you need a new cap. This will be a round or oval shaped can that has spade connections on the top. Depending on the unit, it may have a dual capacitor. These capacitors provide the power necessary to start the fan and the compressor. Be sure to replace with a very close match as the existing.
If the fan is a PSC (permanent split capacitor) motor, then it will have a run capacitor wired in series with the start winding, and this capacitor never comes out of the circuit, providing greater running efficiency. This capacitor can be mounted directly to the motor, or placed remotely.
Hope this helps

Aug 11, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Fuses were replaced first. Fan on airconditioning unit won't keep


It sounds like the run capacitor of your condensor fan failed. When it fails, it can prevent your fan from starting unless you manually spin it to get it going, then it could run for awhile before it overheats.

Apr 06, 2010 | Heating & Cooling

1 Answer

OUT SIDE FAN DOES NOT START WHEN A/C UNIT COMES ON. tHE FAN WILL START IF YOU GIVE THE BLADE A SPIN MANUALLY.


Be careful.....! If it starts when you push it you can hurt yourself seriously from the spinning blade. Sounds like your motor has a bad capaictor. Turn off the power (circiut breaker). Remove the old capaictor. Find the rating on the side. Replace it with the same rated size. If the motor has been subjected to running without a good capacitor for a while you "might" also need to replace the motor.
Good luck........

May 02, 2009 | Goodman CLJ30AR32 Air Conditioner

2 Answers

Condencer unit fan wont run


If you have power to the fan and the fan won't come on, then its bad. You don't have to do another check. You will know if the capacitor is bad by turning the power on to the unit and taking a stick to start the fan. If the fan starts running after manually spinning, then the cap is bad. If not, the motor is bad.

Apr 02, 2009 | Heating & Cooling

2 Answers

Cooling Fans Wont Kick In


Temp sending unit has gone out it tells the fans through the relays to come on. Those units are usually found on th block where the radiator hose couples to the motor.

Feb 10, 2009 | 1992 Pontiac Grand Prix

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