Question about Carrier 38CKC030 Air Conditioner

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Ac sytem blows strong air but its warm

I have a Currier ac system blows hot air. part of the unit is in the attic. any suggestions?

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If the compressor and fan work in the outside unit, and the fan inside (air handler) works, probably the system is low in refrigerant which means there's a leak that has to be fixed and then recharge the unit.

Posted on Sep 04, 2009

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1 Answer

Only blows heat when accelerating


the ac core only blows cold air but You must be talking about the heater core.. In which case I would suggest that you bleed the air out of the coolant system as there is an air lock in the heater core.

Jan 07, 2014 | 2009 Ford Focus

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The goodman air conditioning unit will randomly turn on and run for a few minites then turn off. The blower fan does not run just the unit in the attic. Any advice?


Hi, not enough detail not enough detail. I have no idea where you are located, but if it is a gas heater/ Ac then maybe the attic space is so hot that the over temperature sensor is turning the unit on in an attempt to cool the system down. If however it is a refrigerant AC unit, I would suggest that the control circuit is faulty, maybe a sticking contact somewhere. good hunting col

Feb 24, 2011 | Heating & Cooling

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No power to ac unit


Hi,
Check the breaker for the unit or check to see if the disconnect by the unit in the attic has fuses that may be blown.
If the breaker is tripped or the fuses blown, then check to see what caused them to blow...

heatman101

Aug 01, 2010 | Bryant 463AAC008BA Air Conditioner

1 Answer

I had my a/c charged today because it has not been cooling the house down. It took less than a pound, but it still blows worm air. Fan and compressor all running. I cleaned outside unit, filters, replaced...


It could be that it is not charged correctly. Check the insulated copper
line outside if it is sweating and the condensor is discharging hot air, then the ac is doing all that it can. Check the evaporator inside to see
if the drain has condensate coming out of it.

Getting the heat out of the attic is a good idea, but you must have enough make-up air in the attic for the fan. If you do not have enough
make up air, it will start to draw air from inside the house. One way to check this is if you have a gas water heater and or furnace. If you put
a flame by the exhaust pipe in the basement and it blows it out, then you now have a backdraft problem.

Run the AC withoutthe fan, my real guess is the unit is not properly
charged or you do not have a big enough AC unit.

Jul 17, 2010 | Goodman CKL36AR36 Air Conditioner

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Why does my air conditioner only blow out hot air?


Hi,
Please check the links given bellow for detailed view to your query as to why you car AC blowing hot air…
http://www.cartechhome.com/2008/07/your-car-air-conditioning-system-is.html

http://www.zimbio.com/Car+Problem+Diagnosis/articles/44/car+air+conditioning+sometime+blows+warm+air

Let us know if you want something more else please accept the suggestion.

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Jun 10, 2010 | 2005 Dodge Durango

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My heat unit will not blow hot air unless we go outside and hit a button on the back bottom of the unit. Once we do that it will blow hot air for that cycle. when it is time for it to come on it is cold...


If it does not have a furnace or heating elements for heating, then it is a heat pump, which is rare for a central AC system, but makes sense of the fact that it blows warm air when you reset the pressure switch, which may indicates freon pressure charge problem if your AC system has a reverse valve and uses freon to for heating (heat Pump).

Do you get heating when outside unit runs? if you do, check freon pressure levels and top up to required pressures. The button you depress is a pressure reset switch ... that is if your AC system is a heat pump ... which, as pointed above, it is not common for central ACs.

Nov 07, 2009 | Ruud Central System Air Conditioner

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Why does my AC keep freezing (Carrier FB4ANF036). I have replaced the blower motor less than a month ago due to the same problem. Just last night we had a lightening storm and shortly after that the AC...


if your system is a heat pump you can switch to heat and see if coil outside gets cold while indoor blows warm air - then switch back to a/c - both coils should not be cold at the same time - low freon pressure / dirty coil / dirty filter / low air flow causes freezing

Sep 22, 2009 | Carrier Heating & Cooling

1 Answer

Unit makes noise, but no air is coming out of vents


check the unit in attic for iced up and outdoor unit you may notice ice on lines or connecting tubing and in attic also-------- if so turn unit off at thermostat and leave fan switch on the thermostat to on while sytem switch is off
should be nothing running but the indoor fan
will have to thaw if it is iced up for a while couple hrs. a guess
you will know when it is thawed as your airflow will begin to come back

check your air filter to be sure it is clean
suggestion only-- keep your house thermostat set at 70 degrees or above
you may have developed a refrigerant leak (freon) which would require a hvac service tech to verify.
if it was iced you can turn all back on and try again once you have good airflow again.
or if your system has not been serviced lately? might be a good time to have it serviced?

Jun 21, 2009 | Heating & Cooling

2 Answers

No hot air


There could be a couple of problems going on. Your fuse on the heater up in the attic is popped.
Your glow ignition is broken.
Your spark ignitor is bad (if that is what you have)
GAs valve is bad.
Or the vent sensor is bad, meaning that the exhaust fumes are not going anywhere.
Now when you turn on the heater your condensiing unit outside should never turn on unless you are calling for AC. Now if the ac is not coming on there can be more problems.
Disconnect fuse is popped.
Wiring is wrong going to the heating board.
No wires for AC going to the thermostat

Feb 10, 2009 | Heating & Cooling

2 Answers

RV Dometic AC Comfort Control Double EE Problem


I have a dometic duo-therm. The unit works great and fan blows strong and both high and low work., but air is coming out of the ceiling unit rather than the duct work. The bedroom unit works OK, but the air is strong out of one duct, and not much comes out of the others. The front unit only has air coming out on the A/C unit and none out of the ducts.

Mar 24, 2008 | Dometic Rooftop RV Air Conditioner

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