Question about Whirlwind FH-778 Air Conditioner

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The unit outside is getting ice around the line close to where you put refrigerant in. House not as cool as needed.

Unit is freezing up around the lines close to the outside unit.

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  • steve
    steve May 11, 2010

    Indoor fan motor is bad or too much dirt and lint on the inside coils.
    Possibly low refrigerant due to a leak.


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Freon is low. Sounds counter-intuitive, but the large return line should be cool( even have condensation on it) but never cold enough to freeze.Either use factory pressure settings or add just enough Freon until Ice melts. If unit has a high-side sight glass there should be no bubbles present. Do not overfill.

Posted on May 29, 2009

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I am not sure if it is a problem.....we recently bought a house with the above heatpump in it. We have noticed lately that the inside unit (not the outside unit) developes a layer of ice on it on really...


If it works fine during the heat of the day, but as soon as it cools down, it freezes up, then you may have a low refrigerant charge. The other things you may check are the indoor filters to make sure they are clean, and check if you are getting good air flow through the vents. Bad air flow can mean you have a dirty evaporator coil if the filters are clean. If the above checks out ok, then you will have a low refrigerant charge and need a technician to come out and charge the unit. What happens is the low charge will cause the pressures/temps to drop inside the unit. When its hot enough outside and warm enough on the inside of the house, its enough to keep it from freezing, but as soon as the outside/inside temps drop, the refrigerant drops below the freezing point and starts to freeze. As for asking if its a problem, definitely. Hope this helps and good luck!

Jul 02, 2011 | Heating & Cooling

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Temperature in house want go down. Don't know if it's the therostat or ac unit


Most likely the A/C unit if the house doesnt feel cool. Look on your refrigeration lines and check it for icing up anywhere on the line if you have that shut the unit down immediately. That means your possibly low on freon, dirty filter. If there is no ice on the line check the condenser (outside unit) and see if the air is hot which it should be if its not your compressor might not be kicking on. hope this helps

May 10, 2011 | Heating & Cooling

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My whirlpool acq128xp0 runs great one day, then barely starts the second day, It doesnt have the air volume or cooling it use too. Just started this year. Mike


Mike, when you stated it barely starts, to what are you referring? The compressor (condenser) section has an issue when starting or the indoor fan is hard to start?

If the fan does run, and the condenser unit outside is operating and you are getting lower than usual air flow (compared to previously), you may have a dirty filter, or you may have other obstructions at the evap coil inside the furnace or air handler. It could also be the unit is freezing up and ice on the evap coil is cutting down the air flow. Chances are if the coil is freezing over, you will have two issue that cause this:

Air flow issues (dirty coil, clogged air filter, or other obstructions across the evap coil, such as a plastic bag or pet hair, dust, ect.) which will also cause the coil to freeze over.

The other issue that would cause the low air flow is ice that is a result of low refrigerant.

If the system ran fine in the past, I will rule out it may be inproperly sized. Have you recently had a fan motor replaced on the indoor unit. If so, and they under sized the fan motor, then it could be the fan is not drawing, or blowing enough air across the evaporator coil and this will cause it to freeze over.

Look for ice on the suction line (piping) which is the bigger of the two lines coming from the outside unit (condensing unit). It is also the line that has the insulation covering it. If it has ice on it, then freezing is occuring on the evaporator. If so, then airflow issues, or refrigerant levels are usually the main culprits.

The two lines (suction and liquid) running between your indoor and outdoor unit should feel the following way to the touch of your hand:

Suction should be cold and possibly sweating if exposed (in places where no insulation is present).

Liquid line (smaller line) should be warm to the touch, but not too hot, or too cool. Should feel close to the outside ambient temperature if felt by hand.

Look these issues over and let me know.

Scott

Sep 04, 2010 | Whirlpool Heating & Cooling

2 Answers

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Jul 30, 2009 | Ruud UBHC Air Conditioner

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The unit is not cooling. have noticed ice on the line in the unit outside.


if one or few pipe may not aproblem may be the thermostat is aet to very low cool anf the fan on low speed or the thermostat is defective also if this icing is growing up means
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May 04, 2009 | Heating & Cooling

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My AC unit keeps freezing up on the copper lines going into the house from the outside unit. It also freezes up on the inside lines and the air is not cooling my home down.


Operate your air conditioner with the fan in the on position. But first turn the fan on, turn the temp up or shut the cooling off. Your coil is more than likely frozen over. At night when outside temperature drops the refrigerant pressure and temperature in the system also drops. This action can cause icing of the cooling coil, with the fan in automatic everything shuts down at the end of a cooling cycle. Thus no air movement to melt ice on previous cooling cycle.

May 09, 2008 | Heating & Cooling

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Ruud heat pump


If the top of the compressor is freezing you either have low refrigerant or a restriction in the coil. Check the air filter and change if necessary. Turn the outside unit off using the outside disconnect found a few feet away from the condenser. Let the indoor unit blow air for a few hours to melt the ice off of the coil. Turn back on the outside unit and after about a half hour, you should feel the cool air from your ducts. If the cool air gets warmer over the next hour, you will need a tech to look for leaks and recharge your unit. If it continues to blow warm air even after the 3-hour wait, you have other issues. To answer your original question, on the indoor unit you will find access panels that can be removed for inspection and cleaning. They are commonly located where a 3/4" drain pipe exits the cabinet. While the unit is off, remove these panels and inspect for a buildup of debris. Good Luck!

Sep 11, 2007 | Heating & Cooling

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