RS2310003 Rev. 0
32
To avoid possible electrical shock, personal injury, or death,
disconnect power and turn off gas supply before servicing,
unless testing requires it.
Service Information
WARNING
!
Bake Burner Ignitor
Bake burner ignitor is mounted in a bracket and shield
assembly parallel to the bake burner. The ignitor
operates in conjunction with the ERC or electronic
thermostat, selector switch, clock/timer in timed bake
and clean operations, bake portion of the dual gas valve,
and the normally closed hi-limit switch during bake, timed
bake, and self-clean operations.
During a bake operation, current flows through the ERC
or electronic thermostat, selector switch, bake ignitor,
bake portion of the the gas valve, and the hi-limit switch
to neutral. As the ignitor starts heating up and glowing its
internal resistance decreases allowing more current to
flow through the bake circuit. When the circuit current
reaches approximately 3.2–3.6 amps, the heated bimetal
arm in the gas valve flexes, opening the valve and
allowing gas to flow to the burner where it is ignited by
the glowing ignitor. The ignitor glows anytime the bake
burner is in operation and will cycle on and off with the
thermostat or ERC.
During a self-clean operation the bake burner and ignitor
are on when oven temperature is above approximately
650°F.
The ignitor can be checked for continuity by
disconnecting ignitor wire leads and attaching an
ohmmeter set to the R X 10 scale. A resistance reading
of several hundred ohms may be indicated and this
reading may vary with each ignitor tested. The main
purpose of this test is to see if the ignitor is open
internally. If ignitor is open, it must be replaced.
A more accurate test can be made to measure the ignitor
current while the oven is in operation. An ammeter
should be inserted in series with one lead of the ignitor,
or an amp-probe attached to the lead to check the
amount of current flowing through the bake ignitor circuit.
When the oven is turned on and ignitor is glowing red, a
current reading of 3.2–3.6 amps should be indicated.
The ignitor can also be removed from the range and
bench tested using the current test method with an AC
jumper or test cord connected to the ignitor leads.
Broil Burner Ignitor
Broil burner ignitor is mounted in a bracket and shield
assembly which is screw mounted to the broil burner
reflector parallel to the broil burner.
The broil burner ignitor operates only when the oven
controls are set for a broil operation or during a self-
cleaning operation for the first 30 minutes.
Broil burner ignitor operating characteristics and testing
procedures are the same as for the bake burner ignitor.
However, the bake and broil ignitors are not
interchangeable due to physical size and mounting
differences.
