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Outside AC unit working, but inside there is no air flow and fan inside will not work unless it is turned manually. Also, a little ice on outside unit.

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  • morenoletici Nov 14, 2009

    thank you for your response...i will attempt. ac unit working fine until two days ago and now when we turn it on, unit outside comes on, but no air flow inside and unit won't kick in inside either. we notice ice forming on outside unit.

  • morenoletici Nov 14, 2009

    thank you for your response...i will attempt. ac unit working fine until two days ago and now when we turn it on, unit outside comes on, but no air flow inside and unit won't kick in inside either. we notice ice forming on outside unit.


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Depending on what type of Thermostat you have, it is usually as simple as setting a jumper for Electric heat instead of gas.
If you have a digital Thermostat then turn off the power to the Air handler and remove the thermostat. Look closely at the small jumpers and make sure your jumpers are set to elect. and not gas so the fan can run in heat mode.
If you have a standard heat cool mercury switch then same as before with the power and unscrew the thermostat, and where the yellow wire is connected if there is a factory with on the yellow, then move the factory wire to the (A) and put the yellow wire back on the (Y).

Good Luck!

Posted on Nov 14, 2009

  • Michael McQuay
    Michael McQuay Nov 16, 2009

    Yes if the Outside is running but not the inside then it will cause the outside to freeze up. In most cases there is safety's built into the systems (High and Low) Presser sensors that can shut down the unit, If the refrigeration falls below or above normal operating pressures,

    If you have fixed the Thermostat problem and still no fan then you will want to check and make sure you can spin the fan freely with your hand, (Turn off power first to unit). If it does then remove the capacitor from the unit and have a local appliance store test it for you and replace as needed.

    Keep me updated.

    Good Luck!


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Have ice build up on line leading into outside unit and ice buidup on inside units on my goodman air conditioner

Turn the system off on the thermostat and set the fan to "ON", this will thaw the ice faster if it hasn't already. When the system has completely thawed, which could take hours sometimes, depending on how bad it's frozen, then turn system back to "Cool" and start these checks>

1. Make sure filters are clean!
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3. Make sure outside condenser fan motor is running.

If you have either no or minimal airflow, check the indoor blower to make sure it's working, if it is, the evaporator coil is dirty restricting the airflow. Be sure the system is thawed because the ice will also block the airflow!

If the condenser fan motor is not running, either the capacitor or the fan motor will need to be replaced.

If your filters are clean, you have good airflow through the house, and everything comes on like it should, it will most likely be the charge of refrigerant in the system is too low and you have a leak somewhere. If you have to have it charged, be sure the system is thawed before the technician gets there, he will not be able to do anything while it's froze.

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The outside fan may run if the unit is in defrost mode this is normal for most heat pumps it is there way of trying to keep the outside unit from staying iced over so the next time the unit runs it will have air flow through the coil and the ice will not be there to prevent air flow.

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Hi again,
The electrical supply needs checking in the outside unit.
Start at any supply fuses, and work around to the compressor.

If it is getting a supply out there, then it is a control issue. There should be a thermostat or controller that will turn the outside unit on if cooling is required. This is the defective part, as the signal to start is not getting there.

Check the outputs from the thermostat on the inside - one contact should close to turn the outside unit on.

Hope this helps. If it enables you to fix it please take a moment to rate this as fixya!

If not, I'll go on further


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