Goodman mini-split indoor unit shows E8 and airflow is reduced or unit shuts down

Safety first: Turn off power to the indoor unit before removing covers. Do not attempt to adjust refrigerant charge yourself.

Steps to check:

• 1. Clean or replace filters: Remove the Goodman indoor unit filters and wash or replace them according to the manual. Dirty filters are a common cause of coil freeze.
• 2. Check vents and doors: Ensure all supply registers and return grilles are open and not blocked by furniture or rugs. Interior doors should be open enough to allow air circulation.
• 3. Inspect indoor coil: With the cover off, look at the evaporator coil. If it is iced over, turn the system off and set the fan to ON to help melt ice. Place towels to catch water.
• 4. Verify fan operation: After thawing, run the fan and confirm strong airflow. Weak airflow may indicate a blower motor or wheel issue.

When to call a professional: If E8 recurs after airflow issues are corrected, a technician should check refrigerant charge, expansion device, and coil temperature sensors.