Frost or ice forms on the indoor coil or front grille of the Amana air conditioner during cooling.

Safety first: Turn off the unit and allow ice to melt naturally. Place towels to catch water.

Steps to prevent coil icing:

• Restore airflow: Clean or replace the air filter, clean the evaporator coil, and ensure the blower is running at full speed.
• Avoid low ambient operation: Do not run the unit in cooling mode when outdoor temperatures are below the manufacturer's minimum.
• Check thermistor: Verify the evaporator thermistor is attached to the coil and reading correctly; replace if faulty.
• Refrigerant issues: If icing recurs with good airflow and sensors, have a technician check for low refrigerant or restrictions.

Do not chip ice with tools; this can puncture the coil and cause a refrigerant leak.