F1 - Control Board Failure - Replace control board (ERC). F2 - Oven Temperature Too Hot - Replace oven temperature sensor. F3 / F4 - Shorted or Open OvenTemperature Sensor - Replace oven temperature sensor. F5 / F6 / F8 - Control Board Failure - Replace control board.
SOURCE: ptac fan keeps blowing
Try setting the fan control to "AUTO" this will cause it to cut out with the compressor.
SOURCE: amana ptac shuts on and off constantly
your control board is shot and your ac can't tell the room is cold enough. 1-888-855-9987
SOURCE: Amana PTAC PTC093A35AA won't blow heat
The reset button is located behing a panel on the front of the unit that is labeled Heat Reset. If that label is gone then look around, it is a small hole, small enough for a paper clip to fit through.
That being said, I have 137 of these units in one of my hotels and have not had a single one needing to be reset. You probably are going to need a new control board kit. These can be purchased from Amana. They are $130. Make sure that you have pulled the heater coil out and inspected it first. Also, there was a recall years ago where Amana was supposed to contact and send out new voltage switches. These are the round black things that the Brown heater wires connect to on the upper and lower side of the heating coil. You should also try to replace those if you find the coil in good condition. I have had those resolve heating issues. Most of the heating issues were a result of a bad relay on the control board though.
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SOURCE: What does the code F1 & F6 mean for the Amana
These codes signify black (F1) or yellow (F6) thermistor problems. May need replaced.
SOURCE: Amana PTAC
I know this is late but I had to add a solution to this problem since I had the exact same problem and was able to solve it. The probelm is not your control board. On these units, the heat pump compressor will not kick in unless the temperature you set on the control panel is within 2-1/4 degrees (or 4 degrees depending on your unit model. Otherwise, the unit locks out the compressor until the electric heat coil bring the indoor temperature up to that level - and then will switch the compressor back on for heat pump operation. So the problem is not the control panel or the compressor, it the electric heat coil. The coil has two manual limit switches on it that may be tripped and should be checked. The coil can be easily accessed by shutting down the power, removing 4 screws around the air outlet, pushing the screen up and sliding the panel out the top. The power wires can remain in place while the limit switches are reset. Hope it works.
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