The CH3 error code indicates a malfunction with the indoor fan motor. This can lead to inadequate airflow and reduced cooling or heating capacity.
Dirt or debris can obstruct the fan, preventing it from spinning properly.
Wiring or power supply issues can prevent the fan from operating.
Check for any obstructions or debris in the fan blades.
Inspect the motor for failure or wear.
Ensure that the wiring is secure and not damaged.