Whirlpool 4322452 - Manual (Page 39)

Page 3-21
ELECTRONIC IGNITION SYSTEM
OPERATION
The Electronic Ignition System performs the same function as the standing pilot ignition system.
However, instead of using a standing pilot flame to ignite the main burners, a spark from a surface
burner ignitor is used.
The electronic ignition system consists of the following components:
1. Ignitor Switches
2. Ignitor Spark Module
3. Surface Burner Ignitors (electrodes)
Ignitor Switches control the voltage to the ignitor spark module by opening and closing the circuit.
The ignitor switches are mounted on the stem of each burner control valve, and are rotary-actuated.
There are two types of switches used on Whirlpool ranges. One is for a 90˚ valve, shown in Figure
3-29, and the other is for a 220˚ valve. Each gas valve has its own ignitor switch. The ignitor
switches are wired in parallel.
IGNITOR SWITCH
TO IGNITOR SPARK MODULE
Burner Off
Switch Contacts Open
Burner Off
Switch Contacts Closed
Ignitors Sparking
GAS VALVE
MANIFOLD
STEM
Burner Off
Switch Contacts Open
Burner Lit
OFF
ON
LITE
OFF
ON LITE OFF
ON
LITE
1 2 3
Contacts
Open
Rotating
Collar Stop
Ignitor Switch Contacts
Open
Contacts
Closed
90˚
Figure 3-29