I have thru-wall PTAC Amana PTH093B35AM unit. I tried to turn it back on after power failure. Only fan motor comes on. When I press heat or cool buttons or temperature up and down buttons, the motor switches from high to low, motor will not switch to AUTO. OFF button and Fan Speed button do not respond at all, temperature/touble code display is blank, status LED is off. How can I trouble shoot/fix the problem?
Thanks in advance!
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