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OPERATION AND SERVICE PROCEDURES
71 RC231002 Rev. 3
FIRE OR EXPLOSION
TO AVOID THE RISK OF ELECTRICAL SHOCK,
PERSONAL INJURY OR DEATH DISCONNECT POWER
BEFORE SERVICING, UNLESS TESTING REQUIRES
IT.
SELECTOR SWITCH
The selector switch is a two (2) position switch used for
"MANUAL" or "AUTOMATIC" bake operation. The selec-
tor switch contacts can be checked for continuity by using
a continuity tester or an ohmmeter set to low ohms range
and following the selector switch contact chart. Power to
the oven must be turned off and the selector switch wiring
removed when checking the contacts for continuity. Ac-
cess to the selector switch contacts can be made by
removing the control panel. NOTE: The selector switch
is not found on models with the ERC.
SELECTOR SWITCH CONTACTS
POSITION B to 3 B to 4
MANUAL
X 0
AUTO
0 X
O = OPEN X = CLOSED
Selector Switch Circuit
OVEN THERMOSTAT (Not Used On Models With
ERC)
The oven thermostat maintains the correct oven tempera-
tures in the bake, broil, and self-clean operations. The
thermostat is located under the control panel.
In manual and timed bake operations, thermostat contacts
C-BA and 1-2 close completing the bake circuit through the
clock in a timed bake operation, the selector switch, bake
ignitor, and bake gas valve to neutral. Thermostat con-
tacts 1-2 are the cycling contacts that maintain the correct
oven temperatures.
In a boil operation, thermostat contacts C-BR and 1-2 close
completing the broil circuit through the broil ignitor, and
broil gas valve to neutral. Thermostat contacts 1-2 are the
cycling contacts that maintain correct broiling tempera-
tures.
In the self-clean function with oven temperatures below
approximately 700°F., thermostat contacts COM-NO, 7-9
and 1-2 close completing the clean circuit through the latch
switch, the broil ignitor, and broil gas valve to neutral.
After the oven temperature reaches approximately 700°F.,
thermostat contacts COM-NO open and COM-NC close
now completing the circuit through the latch switch, selec-
tor switch, timer contacts, bake ignitor, and bake gas valve
to neutral. Contacts 1-2 cycle to maintain correct self-
cleaning temperatures.
The thermostat contacts can be checked for continuity by
using a continuity tester or an ohmmeter set to the low