If the door is loose, you will need to realign the door and tighten the hinges. This can be accomplished by closing the door, pulling out on the hinges until the door sits flat against the furnace, and tightening the...
FAQ
Low lift test (lift should be between -3 and -8)
Check the blower fan is running and relatively quiet. If the fan needs to be replaced, PN NC-1500 (1087/1275) or NC-1520 (859/945) Clean the upper section of the NCAT furnace as described in the maintenance section Verify the door is...
The furnace is taking a long time to heat up
Check the heating elements. They are the left, right, top, and bottom walls of the chamber. If or more of them is cool, while the others are warm, they will need to be replaced. As there are multiple variations, you...
The furnace is not heating
If the temperature is below 50F (10C), take a match/cigarette lighter, and apply the flame directly to the chamber thermocouple for 15-30 seconds. Once the red display starts to change, the furnace should begin heating when you close the door...
I came in this morning, and the furnace displays ‘INAC’ on the screen
This is a safety feature, often used alongside the startup timer. It only triggers if the furnace is idle for over 4 hours, and it shuts the heating elements off. To reactivate it, just hit ‘enter’ on the keypad and...