Question about Heating & Cooling
My unit is on heating and is turned on at 6am.
Yes and no. Your outdoor unit will begin to freeze when the temp is extremely low. Should have a defrost feature that will quickly thaw coil and resume heating once thawed. This should all happen on its own.
Posted on Aug 10, 2017
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Posted on Jan 02, 2017
most likely a bad temp sensor on the outdoor coil. you are seeing ice so its cold enough to defrost but the sensor is not seeing ice so it doesn't. usually a generic 3/8 or 1/2 clamp on sensor will fix. you can freeze the sensor with a little r22 and it should close and fall into defrost or jump it and it has to proof closed and the unit should defrost. if you jump it you may have to speed up the board to diagnose. usually jumping test pins together throws it into a 5 sec in 20 seconds out cycle. kind of like turning a 24 hour days into 24 seconds. or to protect the board you can just find the sensor pull it, replace it and watch what happens next cold night. good luck
Posted on Nov 10, 2008
Yes, it is normal with a heatpump, you run the outside unit in cooling and heating.
It is also normal when the outside unit goes into defrost for the outdoor fan to shut off during the defrost mode and to see steam coming out of the outside unit, while it's melting the frost or ice, then the fan will come back on.
Posted on Jan 06, 2010
Testimonial: "Thanks a bunch! I was really starting to worry."
As with the simplest way to thaw ice is with heat.
If you are running this unit in cooling and have ice outside, then you most likely have a freeze up inside as well. If this is a heat pump unit, then frost is normal during operation, however, ice build-up is an indication of a problem.
There are 2 effective ways to remove the ice build-up. The first is the simplest. Get your water hose and hose it down. Be sure to turn off the breakers to the unit and avoid spraying the electrical compartment. If you have the ability to hook the hose into a hot water line, then this process with be extremely fast. Let the unit sit for about 20 minutes to dry out and turn it back on.
The second can be a little more complicated if your not tech savoy. You can turn the system on in the cooling mode. This will make the outdoor coil the condenser section. Then, either block the airflow through the coils with an object, put an object over the fan to increase pressure, or if you can, disconnect the fan so it does not run. This method is essentially the same as a defrost cycle.
As with any failure, you can fix the problem at hand, but it will return. After you get past this, your real challenge will be determining what caused the freeze-up.
If you were running your system in cooling already, then you will need to ensure the system has de-iced on the inside as well.
Posted on Jan 12, 2010
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