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Quick And Easy Steps In Troubleshooting An Amana AC That’s Not Turning On

Quick And Easy Steps In Troubleshooting An Amana AC That's Not Turning On

Despite having a reputation for making reliable Packaged Terminal Air Conditioners (PTAC), Amana occasionally has operational issues. If you find that your Amana air conditioner won’t turn on, don’t worry. We have looked into the problem and put together troubleshooting advice to help you fix it the right way.

Quick And Easy Steps In Troubleshooting An Amana AC That's Not Turning On

Try these steps if your Amana air conditioner won’t switch on:

  1. Check Settings
    Make sure the controls for the air conditioner are in the right place. Change the target temperature using the up and down arrows, and turn on the appliance using the “smart cool,” “high fan,” “medium fan,” “low fan,” or “energy saver” buttons.
  2. Avoid Using Extension Cords
    Since extension cords have the potential to disrupt power, make sure your air conditioner is not linked to the electrical system using one. Direct plugging into a working outlet is required.
  3. Replace The Fuse Or Reset The Circuit Breaker As Necessary
    If the preceding procedure didn’t work, check the operation of the outlet and the circuit breaker. Additionally, look for a fuse or circuit breaker that has tripped on the circuit breaker.
    These steps should help you troubleshoot and identify the cause of your air conditioner not turning on. For more details on resolving the issue, we recommend continuing to read further.

Troubleshooting Your Amana Air Conditioning Unit

Quick And Easy Steps In Troubleshooting An Amana AC That's Not Turning On

Amana air conditioners impress homeowners with their self-diagnosis feature, which requires no technical expertise or tools to activate. By running a self-diagnostic test, the unit can identify any issues and display an error code, enabling you to perform a manual reset if needed.

To enable self-diagnosis on your Amana air conditioner, follow these steps:

  1. Locate the “Up” and “Down” arrow buttons on the air conditioner.
  2. Press and hold both buttons simultaneously.
  3. While holding the two buttons, tap the “Cool” button twice.
  4. Allow a few moments for the display to update.
  5. If you observe a red dot flickering in the screen’s corner, it indicates the self-diagnostic test is functioning correctly.

Normally, when your Amana air conditioner is running, the screen displays the temperature. However, during a self-diagnostic test, you will see a “–” symbol instead. Additionally, a green light can be seen on the bottom left side of the unit’s touchpad.

Allow the air conditioner to run the self-diagnosis for a few minutes. Once the test is complete, you will see the error code mentioned earlier. However, if the unit does not display an error code and the dashes persist, it indicates that the system cannot detect the current issue. In such cases, we strongly recommend seeking assistance from an HVAC professional.

Meaning of Error Codes on Amana Air Conditioners and How to Resolve Them

Quick And Easy Steps In Troubleshooting An Amana AC That's Not Turning On

Refrigeration Errors

Codes C1, C3, and C4: These codes indicate freezing issues with the unit’s coils. Resetting the air conditioner manually will not resolve this problem. To prevent compressor damage, avoid running the air conditioner and instead check the air filters, fan/blower functionality, and refrigerant levels. We recommend contacting an HVAC professional promptly.

Code C6: This unique code indicates overall inadequate performance of several components in your PTAC air conditioner. Inspect the unit’s electrical wiring, compressor, and blower motor. Due to the unit’s comprehensive performance, it is advisable to seek assistance from an HVAC professional.

Code C7: “C7” signifies that the air conditioner is shutting down the controls as a safety measure, continuing from the freeze warning.

System Mode Errors

Code FP: “FP” stands for Freeze Protection, indicating that the unit activates this code when the temperature falls below 40 degrees Fahrenheit to prevent component deterioration and freezing. The solution is to relocate the unit to an area with a temperature above 43 degrees Fahrenheit.

Code On: This code indicates that your air conditioning unit is connected to a wired thermostat, whereas it should be connected to a wireless system. Adjust the settings to the appropriate mode to resolve this issue.

Codes OP / NP: These codes indicate that the unit has detected an open door or window, automatically ceasing operation to conserve energy. Simply close the open door or window to rectify the error.

Code HP: It suggests that the air conditioner may be at risk of overheating, causing the unit to switch to Heat Sentinel mode to safeguard vital components.

Code Eo: “Eo” signifies an incorrect format on the unit’s service board. Perform a manual reset to restore the air conditioning unit to its default settings and ensure normal functionality.

Code EH: “EH” stands for Emergency Hydronic, indicating that the compressor of the air conditioning unit is not operational, and the EHH switch is off.

Code LS: Abbreviation for Load Shedding, it indicates that the compressor and electric heat are deactivated. Turn on the “LS” switch to resolve this error.


These codes indicate malfunctioning of specific unit parts, necessitating their replacement.

Codes F1, F2, F3, F4, and F6: These codes refer to issues with the thermostat and various thermistors. Depending on the specific code, either the wireless thermostat, indoor thermistor, or discharge thermistor requires attention.

Code Fb: Indicates low battery levels in the unit. Replace the batteries to rectify this error.

Codes H1 and Br: These codes relate to excessive or low input voltage, respectively. They can potentially damage your unit. Seek professional assistance to resolve these issues.

Airflow Alerts

These codes indicate problems related to airflow in the air conditioner. To resolve them, ensure proper airflow within the unit.

Code L6: This indicates that your Amana PTAC is unable to function normally. Cleaning the air filters will help remove this problem code.

Code LC: This indicates more serious issues, possibly caused by excessive heat, with the condenser fans and outside thermistor. Condenser coil cleaning will solve the issue.

Code C2: Indicates that the Amana PTAC’s cooling capacity is insufficient; to fix this, inspect the unit’s seal, clean the filter, and close the vent door.

Code C5: This indicates that there are airflow impediments causing the outdoor coils to overheat. To get the airflow back to normal, remove any impediments.


Thanks to the self-diagnosis function and the associated problem codes, troubleshooting your Amana air conditioner is a straightforward operation. Who would have believed that executing a manual reset could be as simple a solution to air conditioner issues? The inventive design of Amana deserves praise.

Quick And Easy Steps In Troubleshooting An Amana AC That's Not Turning On

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