Unit shows P1; may relate to low indoor coil temperature or anti-freeze protection.

Safety first: Turn off power before cleaning.

Steps:

• Clean filters and coil: Wash filters and gently clean the evaporator fins.
• Check fan speed: Ensure the indoor fan runs at the selected speed and is not restricted by obstructions.
• Sensor check: Verify the evaporator sensor is correctly positioned and functioning.
• Refrigerant check: If P1 recurs and the coil ices up, have a technician check for low refrigerant or expansion device issues.