Electronic Ignition System; Operation - Whirlpool 4322452 Service Manual

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
Rotating
Collar Stop
IGNITOR SWITCH
STEM
1
OFF
Contacts
Open
Burner Off
Switch Contacts Open Switch Contacts Closed
Figure 3-29
Page 3-21
TO IGNITOR SPARK MODULE
MANIFOLD
GAS VALVE
2
90˚
Contacts
Closed
Burner Off
Switch Contacts Open
Ignitors Sparking
3
Contacts
Open
Burner Off
Burner Lit