If your home comfort system isn't operating the way it used to, there are a few things you can check before calling for service.
Keep Your Home Comfort System Running at Peak Performance
Walk through the following furnace and air conditioning troubleshooting steps to diagnose and address the most common HVAC system issues. If you still believe your HVAC system is not working properly, please call Harbin with your system or unit model number for service.
Air Conditioning Troubleshooting Guide
Is your thermostat ready?
Is everything on?
Did the circuit breakers trip to the OFF position?
Is the outdoor disconnect switch on your outdoor unit in the ON position?
Is the blower motor in your furnace or air handler running when your thermostat is activated?
Is there proper airflow?
Gas Furnace Troubleshooting Guide
Is your thermostat ready?
Is everything on?
Is there proper airflow?