Amana air conditioner displays E9 and may not start the compressor or fan; sometimes occurs after a power surge.

Safety first: Unplug the unit or switch off the breaker before accessing electronics.

Steps to address E9 (EEPROM/memory error):

• Power cycle: Disconnect power for at least 5 minutes to allow the control to fully discharge. Restore power and check if the error clears.
• Check power quality: Verify the outlet or circuit provides correct voltage (typically 115V or 230V depending on model) with a multimeter. Correct any wiring or breaker issues.
• Inspect control board: Remove the control cover and look for burn marks, swollen components, or insect damage. If present, replace the main control board.
• Replace control board: If E9 persists after a reset and power is correct, the control board's memory is likely corrupted. Install a new OEM Amana control board programmed for your specific model.

Because this is an internal electronics fault, there is no safe field repair of the EEPROM; replacement of the board is the standard remedy.