Unit turns off by itself after some time and will not restart until power is cycled.

Safety first: Unplug the unit before cleaning or opening panels.

• Step 1 – Clean filters and coils: Thoroughly clean air filters and both indoor and outdoor coils.
• Step 2 – Check fan operation: Ensure both indoor and outdoor fans run continuously during operation and do not slow down or stop unexpectedly.
• Step 3 – Inspect PCB compartment: Make sure the electronics compartment has adequate ventilation and is not blocked by dust.
• Step 4 – Reduce load: Avoid operating the unit at maximum capacity for extended periods in extreme heat; use curtains and insulation to reduce heat gain.
• Step 5 – Component replacement: If shutdowns persist, a technician should test fan motors and PCB temperature sensors and replace faulty parts.