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WorksheetsTroubleshooting
Total questions: 10
Worksheet time: 11mins
How do you confirm individual safety switch operation?
by disconnecting from both furnace board and thermostat.
by isolating the switch and checking continuity.
If there is not ______ volts of voltage at the terminals; check _________ and _________connections. (place commas between answer for each blank. Example: 99, furnace, computer)
(a)
What is an easy way to check the flue for obstructions after a visual assessment?
tap the flue pipe
There is no easy way
Remove the flue for a short period; if system runs you know it's obstructed.
Typically, normal operating pressure should be _____ more than the rated pressure of the pressure switch
30%
40%
50%
60%
If the gas valve does not open and you get 24 volts, but burner does not ignite you should check ...
igniter alignment
gas pressure
other reasons for lack of gas
You can use sandpaper to clean the flame sensor.
True
False
If you get voltage at the blower, which part of the furnace may need to be replaced.
condenser
blower
pressure switch
burner
When you come to a step that is performing according to expectation what should you do next?
revisit previous step
move on to the next step
move on to the next step and if needed revisit the previous step
Identify 3 hazards and protections for each, that would need to be thought about prior to the removal of this system?
What precautions would need to be taken in the removal of this system?
