
Quiz on Electronic Controls and Ignition Sequences
Authored by Andgel Thomas
Education
12th Grade

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What initiates the call for heat in a forced-air furnace?
The pressure switch closes
The room thermostat senses a drop in temperature
The ignition module powers up
The main burner lights
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if the ignition module senses a flame during the safe-start check?
The main burner ignites
The pilot gas valve opens
The system goes into lockout
The ignition sequence continues
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is required for the ignition of the pilot in an intermittent pilot spark system?
Only a source of ignition
Only fuel (gas)
Both fuel (gas) and a source of ignition
A functioning thermostat
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What occurs after the pilot flame is proven in an intermittent pilot spark system?
The main burner ignites immediately
The spark generator circuit shuts off
The system goes into lockout
The pilot gas valve shuts off
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the post purge cycle in some furnaces?
To ignite the main burner
To clear unburned gas from the combustion chamber
To shut off the pilot gas
To maintain the pilot flame
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if the pilot is not proved within the lockout timer's allotted time?
The main burner ignites
The system continues to try igniting
The module shuts off the gas and spark
The thermostat resets
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can a module be reset after a lockout?
By closing the R-W terminals
By waiting for one minute and turning the power back on
By replacing the ignition module
By turning off the thermostat
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