
Air conditioner short cycling (turns on and off too often)
Short cycling has many causes: oversized equipment, a badly placed thermostat or sensor, restricted airflow leading to icing, failing electrical parts, or refrigerant issues. Start with the cheap checks.
Before you start
- Switch off power before opening any panel.
- Refrigerant diagnosis is EPA 608 work.
Diagnostic steps
Unlock all 5 steps with expected values
Full library + AI assistant for $34.90, one time.
Get lifetime accessOnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.