The other day my unit quit pumping in cool air, but after letting it sit for a few hours it came back on. Is this normal? It was humid out (monsoon season in Arizona) but not set unresonably cold (70 degrees).|||If your unit is freezing up it's low on freon.|||Sounds like your filter needs replaced or cleaned. Another reason that comes to mind is if your evaporator coil (inside) is dirty.
Either of these two areas could produce the conditions you spoke of in your question. There could be other reasons too but they are rare.|||Your unit is freezing up do to low on refrigerant. You have a leak somplace which will need to be repaired or you will be adding refrigerant on a regular basis|||To simply answer you question, yes. However there is a reason it happened and very simple ways to prevent it from freezing in the future. A heat pump is only good for about a 30 degree difference in outside to inside temps. Your house and all of its insulation play a part in keeping you cool. With outside temps high, and high humidity, you asked too much from your unit. The coils got so cold, ice formed on them. This ice prevented your unit from properly exchanging heat and thus the system shut down. Letting it sit allowed the ice to melt and come back online properly. In the future, set your inside temp around 72-75 or higher, and use ceiling fans to help cool your house. Clean filters and a properly maintained heat pump will help out as well.
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