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This sounds like the fan not turning during cool. You will have to check the fan relay for power during the cool cycle. The fan relay is run by the low voltage side, but still there is hi voltage present. When in heat the power goes thru the relay on one set of points then in cool goes thru the opposite side. You should have a digram present, and then on the main circuit board there is a code light. Check the light for blinking or (flash) read the bottom of the board for the code ( very small print)
I was wondering the same thing about our unit until I found the specs online and read that it has freeze protection. When the temp goes below 40 degrees, the fan comes on to prevent damage to the unit.
A multi split system is it? One of the reasons why the light flashes is because one indoor unit is on cool and the other is on heat. Changing the one on cool (or on heat) will fix this. Both indoor units need to operate on the same mode.
Sounds like the compressor starting relay or capacitor is defective. When the compressor could not start, the electric heat came on to satisfy the heat requirement and causing the emergency heat light to come on at the thermostat. This light warns you that electric heaters are energized. And they use a LOT of electricity! Call a different company for service. And do it soon.
If your unit is blowing heat inside and it's not a heat pump. It will be most likely electric heat in your case.
Sounds like you have a split unit meaning the condenser is outside and the cooling and the heat features are inside or under your home.If your Rudd is a heat-pump the outside unit will cycle/blow cold air outside in winter and hot air will cycle/blow outside during the summer season. Now, if for some reason the heat is not coming on inside the house, would be the only reason that you would need to be concerned. Being a heat relay or breaker of could cause that problem. Hope this helps you, Sea Breeze