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Get basic answers to common operating questions to keep your York® system running at peak performance.

Keep your system up and running with these convenient tips that address common operational issues. If these simple steps do not solve your problem, please call your York® Dealer with your model number for service.

Air Conditioning Troubleshooting Guide
  • Is your thermostat set in the "cool" position (or “warm” for winter heat pump operation)? 
  • If so, is your outdoor air conditioning or heat pump unit running? 
  • Did the circuit breakers in the circuit breaker box (or electrical panel) trip to the “OFF” position? 
  • Is the outdoor "disconnect switch" on your outdoor unit in the "ON" position? (The disconnect switch is usually a small metal grey box mounted on a wall near the outdoor unit.) 
  • Is the blower motor in your furnace or air handler running when your thermostat is activated? (Make sure the furnace switch is in the "ON" position.) 
  • Have you changed your filter? (A blocked filter can cause your unit to shut down due to lack of proper airflow.)
  • Are the air registers (supply or return ducts) plugged?
Gas Furnace Troubleshooting Guide
  • Is your thermostat set in the "heat" position? 
  • Is the temperature setting on the thermostat set higher than the thermostat's indoor temperature? 
  • Is the power turned on for your furnace? (At the thermostat, turn the fan to "ON." The fan should run when power is being supplied to furnace.) 
  • Did the circuit breakers in the circuit breaker box (or electrical panel) trip to the “OFF” position? (Check the SSU light switch on the gray box located at the furnace to make sure it is in the "ON" position.) 
  • Have you changed your filter? (A blocked filter can cause your unit to shut down due to lack of proper airflow.)
  • Are the air registers (supply or return ducts) plugged?
Take Care of Your Air
Feel healthier and keep your
home cleaner with advanced
products that can replace stale
air with fresh, filter germs, control humidity and clean your comfort system to ensure high indoor air quality.
Certify Your Comfort System
Feel the assurance of 100% satisfaction brought to you by select York® Dealers who have qualified to become a York® Certified Comfort Expert™– the best in the business.

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