Question about Heating & Cooling

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1. The air conditioning unit is freezing up 2. The motor is on the highest mode and the thermastat is set on 10 and the cool air is not kicking in. Please advise what we should do.

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Have a service tech come out your freon leveals could be low

Posted on Sep 11, 2010

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In Fan mode, fan works; but in AC mode, I can hear the normal AC sounds, except the fan never turns on. This is the fan in the lower half of the unit in the inside of the house, which blows the air...


on a call for air conditioning your therrmastat brings the indoor fan on and the out door unit at the same time. Since your fan comes on in "fan" mode, it sounds like you need a thermastat. For temp. cooling just turn your fan switch to "on" and turn system switch to cool and set desired temp. System will cycle off and on but fan will not shut off until fan control is set back to "auto". I suggest replaceing thermastat

Aug 16, 2011 | Heating & Cooling

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I live in a very small one room studio,and have a comfort aire window unit...air and heat.The heat works real well,but in the spring and summer,I would set the unit on the coldest setting.I can hear the...


Lets look at the output of the system first. Take your square footage of the area you are trying to condition and times it by 15. We try to get 15 Btu's per square foot of air conditioning. If your area is say 10 by 15, you have 150 square feet; times it by 15 = 2250 Btu unit is required. If you have a 5,000 Btu unit, it should be more than enough to cool the room. If this is correct, the problem may be because you have the unit set for Dry. In Dry mode, the compressor will cycle less frequently than if on Cool. If in fact the unit is on Cool, you may need to lower the temperature setting to fool the sensor from turning off the compressor prematurly. If you still can't cool the area, your unit has an issue with either refrigeration or air circulation and will need to be serviced.

Apr 09, 2011 | Comfort-Aire Heating & Cooling

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Outdoor heatpump unit,twx736a100a2, coils freeze over solid,replaced outdoor thermastat, checked freon and replaced a relay switch at a cost of $500/for 2 service call-outs.It worked fine whole month of a...


Coils freezing due to dust blocked coils and or air filter or short of gas. Service your unit completely.Please do not change any spare/s without knowing exact problem. Please follow the steps given below.

Toget proper heat, keep your temp setting at 30+ degree and also mode in "heat"position. If still no heat, check your heating sensor for closed circuit by anOHMs metre.It it's with RV, check power to RV.If it's with heatingelement check power to element. If power is there but still no heat meanselement defective. Replace new heating element. Thanks. To get proper cool, keep the tips as follows:
1. Check air filter is cleaned. 2. Check indoor coil is cleaned. 3. Checkindoor blower motor is working. 4. Keep in cool mode. 5. Set temp minimum 3degrees less than room temp.6.Check compressor is working with correctpressure.
Thanks. Helpful?

Jan 04, 2011 | Heating & Cooling

2 Answers

My Trailer AC doesnt cool below 75 degrees. I feel no differnce between the coldest setting on AC than on the Fan cycle. I cannot hear the cooling system kick on at all.


If you don't here the compressor kick in after about 3 min then the thermastat is not telling the compressor to com on, or the control board is not telling the compressor to come on. The power can be traced from thermastat to the control board and will have a 12volt feed on the yellow wire at the control board with compressor mode on. From there it is 120volts the control board has a relay that turns on the compressor. the compressor capasiter can cause the compressor not to come on, normally it will have burnt wiring.

Aug 02, 2010 | Dometic 57915531 Air Conditioner

1 Answer

Room a/c works great for hours and then compressor just stops


the unit may be knocking off on defrost if the coil is getting v cold,

check for full airflow over the indoor unit/evaporator coil, check filters fan operation and coil condition. Likewise it may be overheating so check the same on the outdoor unit/condenser clean coil and fan operation.

Unlikely but the unit may be under performing and slightly short on refrigerant, not providing enough suction cooling to the compressor motor so the internal over temp klixon would cut it off for short periods, to cool the motor.

Jul 05, 2010 | Samsung AW1203B Air Conditioner

1 Answer

My unit runs until the thermastat is satisfied and shuts down correctly. But 3 minutes later it starts up again. It repeats this cycle continuosly. How do i set the temperature differential to stop this?


Set the thermostat knob to position cool scale completely to the right or if in numbers to highest number i.e. 9 0r 10. There is nothing wrong with your AC it is only the thermostat setting

Dec 22, 2009 | Heating & Cooling

1 Answer

Carrier A/C in RV won't run


check your breakers make sure when running unit this is the only thing on the breaker 15 to 20 amp be sure to keep a window cracked as well unit does freeze over so don't have all the way on cold

Jun 23, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Air conditioning blowing only highest setting but HOT air


Sounds like your freon has leaked out and your heater blower resistor is burned out. Deffinitly take this to the dealer.

May 20, 2009 | 2001 Honda Odyssey

1 Answer

During air condition mode fan does not run unit freezes up and there is a red flashing light on the circuit control board. The board # is GMP 125-5. The outside compressor work normally.


Dear tomsandi,
Either the fan motor is burnt out or it is not getting the power supply, hence the fan is not working. Since there is no air passing through the evaporator the cooling is not taken off fron the coil so it freezes. The fan motor has to checked up.
Regards,
ramesh22

Jun 25, 2008 | Heating & Cooling

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