HVAC Questions? Ask an HVAC Expert for Answers ASAP
It is common to see a reference for the LED on the inside of your furnace, and indoor fan panel. There should also be a wiring diagram on one of the same panels. Some ignition controls have the led reference on it as well. The furnace panel usually can be removed without any tools, but the panel for the indoor blower might require a 5/16th nut driver. Please let me know if you are able to take the panels off.