LP 4
18. During the gas pressure test, after pushing the “fault
recall” and “learn” push buttons, then releasing them within 5
seconds, the fault screen will flash “FT.” What does this mean?
A. A fault has occurred in the furnace.
B. Improper ground. Check grounds, and resume test.
C. The furnace gas valve has malfunctioned.
D. Furnace is now in the test mode.
19. The gas manifold pressure should be measured and adjusted
with the burners firing.
A. True
B. False
20. The temperature rise on a Daikin 90 Plus furnace can be
adjusted by the blower speed. Decrease the blower speed to
_____ temperature rise.
A. Monitor
B. Decrease
C. Reduce
D. Increase
21. The airflow quantity is displayed on the LED display
adjacent to the dip switches on the integrated control module.
If the furnace airflow being delivered is 1255 CFM, the LED
display will indicate a “12” on the screen.
A. True
B. False (rounded up to 1300, so it will display a “13”)
22. Using the airflow table below, what “tap” would you adjust
to deliver 1200 CFM’s for furnace model MVC960803BN?
A. Tap C
B. Tap D
C. Tap A
D. Tap B
23. When checking duct static, the negative pressure must be
read between the return filter and the furnace blower.
A. True
B. False
