Princeton Air Conditioning Inc.

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If your furnace or air conditioner will not start, here are some non-technical items you can check and possibly avoid the cost of a service call.

Furnace Start-Up Clean or replace air filter.
•	Check gas pilot; follow instructions on furnace if lighting is required. This does not apply to gas furnaces with spark ignitions or to homes with electric heat.
•	Check switch in power line to furnace; it should be in the "on" position.
•	Set thermostat to desired temperature and indicate "heating". Set fan switch to "on" if continuous air movement is desired. Set fan switch to "auto" if automatic operation is desired.

If your heating system fails to operate properly:
•	Check thermostat for proper setting.
•	Check for dirty filters.
•	Check that the blower door on the furnace is properly seated. Some furnaces have an interlock switch that stops the unit from operating if the door is not installed properly.
•	Be sure the power to the unit is "on".
•	Check for tripped circuit breaker or blown fuse.
•	If your furnace will still not operate properly, call Princeton Air at 609-799-3434.

Air Conditioner Start-Up
•	Check outside unit to ensure air flow is not blocked.
•	Turn on power to outside unit at least 24 hours prior to start-up.
•	Clean or replace air filter.
•	Check switch in power line to furnace or blower unit: it should be "on".
•	Set thermostat to desired temperature and turn switch to "cool". Set fan switch to "on" if continuous air movement is desired. Set fan switch to "auto" if automatic operation is desired.

If your air conditioning system fails to operate properly:
•	Be sure the power to the unit is "on".
•	Check for dirty filters.
•	Check that the blower door on the furnace / air handler is properly seated. Some furnaces / air handlers have an interlock switch that stops the unit from operating if the door is not installed properly.
•	Check the thermostat for the proper setting.
•	Check for a tripped circuit breaker or a blown fuse.
•	If your air conditioner will still not operate properly, call Princeton Air at 609- 799-3434.