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Indoor unit wont turn on - Carrier 38CKC042 Air Conditioner

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Check the breaker,Then check the thermostat.--Good luck

Posted on Sep 12, 2009

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Unit wont turn on.


try test the remote using cellphone camera.hold remote facing the camera lense as if u taking a photo. you should see wht appears to be a flashing light when pressing any key on the remote. should you see no flashing i would say the remote is faulty.

Oct 05, 2015 | Heating & Cooling

2 Answers

Goodman minisplit flashes on pre. Def. Wont start


You have to try resetting the system. First turn the breaker off for the condenser and wait about 20 seconds. After you turn it back on the system should reset.


Air Conditioning Repair Tamarac

Apr 07, 2015 | Goodman Heating & Cooling

1 Answer

Goodman ac fan wont turn on


Indoor fan or outdoor fan? Indoor fan not coming on may be due to a open door switch. When the air filter is replaced or the door to the indoor fan may have a button switch that makes contact or closes when the door is in place and this switch if existent in your unit, is probably open. A safety feature for when the door is opened, no one gets hurt.

Jun 28, 2014 | Goodman Heating & Cooling

1 Answer

Front grill


Check the air filter and if it is dirty, replace..
Turn equipment off and let the ice melt.
After ice melts, place a/c in cooling mode and set the thermostat to 3 degrees below room temp display.

The indoor unit fan should start blowing cold air immediately and then turn off once the room temp drops one degree below the cooling temp setting.
If the indoor unit does cycle off, check the outdoor unit and make sure it turns off at the same time.
If the outdoor unit continues to run and the indoor fan is not running, the indoor unit will ice up.
A defective compressor relay that is stuck in a closed position will cause icing of the indoor unit because it keeps the compressor running when it should turn off with the indoor fan.

Do you have an error code being displayed on the controller?
Is there an led light that is flashing on the indoor unit?

Another possibility causing the indoor unit to ice up is if the freon in the system starts to get low.
Make sure the ice has all melted for this next check.
Pretty easy to check without special tools.
If the air filter is clean and there is no dust/ dirt blocking the fins on the indoor unit, turn a/c back on to cool and check that the indoor unit fan comes on and is blowing air good.
Once everything seems to running good go to the outdoor unit.
There will be two lines with black rubber insulation covering them.
Peel back the insulation three inches on each line and observe the copper lines.
If either line starts to frost up the a/c system is most likely low on refrigerant.


Another cause of indoor unit icing could be that the aluminum fins behind the air filter are clogged with dust or other foreign material.
This would block the air that must be pulled in causing the indoor unit coil to become too cold due to lack of air flow and it will ice up.

Operating the cooling system when the outdoor temperature is below 60 degrees can cause the indoor unit to ice up also.

I'm Robert.
Florida certified a/c contractor. 30 years experience.
Hope this helps.


Mar 18, 2014 | Fujitsu Heating & Cooling

1 Answer

Why is Mr Slim MS-SGF24VC outdoor unit working when indoor unit off


Possibly a bad control board in the outdoor unit. Pull the disconnect outside to stop machine, wait 10 seconds and out back in. White mist was likely frost built up on indoor coil due to condenser running without the fan.

Jun 11, 2017 | Heating & Cooling

1 Answer

AC unit wont work, inside coils are hissing but outside unit not turning on.


If thisnis a central air conditioner and there is hissing at the indoor coil then the compressor is running, it is possible that both fans are not running. The indoor motor may not run if the control board is bad, capacitor is bad or the motor itself is bad. The outdoor fan may have a bad capacitor or the motor itself is bad

Jul 23, 2012 | Heating & Cooling

2 Answers

My unit to my house wont turn on outside. This happened last night at about 8:30. I have checked the circuit breaker/fuses and the little red switch on the unit itself-- I pushed that. I turned the...


Turn power off to indoor unit. Remove red, yellow and green wires from tstat and wire nut the three together. Turn power to indoor unit back on. This should bring on indoor fan and outdoor conpressor and fan. Let me know

Jun 22, 2017 | Fedders Q Chassis A6Q10F2A Air Conditioner

1 Answer

The unit wont heat it just blows cold air at the indoor unit. The indoor unit runs when the system is turned on and on the outdoor unit I can hear the compressor running but the fan wont spin.


It will most likely be the capacitor which goes to the fan itself. Make sure to secure power for both indoor and outdoor unit before attempting repair. The capacitor ratings will be printed on the side. Make sure the fan spins freely first with a stick or coat hanger, then check to see if the capacitor (usually shiny metal cylinder) is bulged like
a can of spoiled food. If this is the case then it has failed for sure. Power off at both indoor unit and outdoor unit before servicing. The capacitor ratings will be printed on the side of the can for example 35/5 uf 370V which is 35 microfarads and 5 microfarads with a 370 volt rating. They can be had at most appliance parts stores
for around 13 dollars. take a cell phone picture of the wiring or make a diagram to be sure. Also check the contactor for bugs or burnt terminals while power is disconnected as this can cause this symptom. (earwigs are notorious for this). Contactor is the device
with all the wires coming to it they come in two types. single pole and double pole. Serial number of unit or a good photo of the contactor helps the parts jobber determine which you have. Hope this helps.

Jun 10, 2011 | Heating & Cooling

1 Answer

Unit wont start, flashing lights on indoor unit, fuse may be gone


How old is it? Can you justify spending lots of money on an older system? Sounds like a transformer issue. Sometimes if the low voltage wiring gets shorted outside via dog or weed eater it will short the transformer. But if transformer is on control. Controls are cheap at supply houses maybe not from technicians

May 28, 2009 | Heating & Cooling

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