Control Panel Access And Shut-Off Switch - Southbend Marathoner Operator's Manual

M G & S
ARATHONER OLD
TROUBLESHOOTING GUIDE (continued)
Symptom Possible Cause
Burners light but go out Bad flame switch.
within a few seconds.
Bad gas valve.
(Ignitor will glow
approximately 4
seconds. If burner does
not ignite, ignition
module will try 3 times
and then lock out.)
Blower motor will not No incoming electric power.
come on.
Loose wire connections.
Bad contactors.
Motor bad.
Shut down switch.

CONTROL PANEL ACCESS AND SHUT-OFF SWITCH

To access the control panel components, remove the screw at the top of the control panel and pull the top
of the control panel out and down (see drawing below). A wiring diagram for the oven is located on the side
of the control panel assembly. When the control panel is folded down, all power to the control panel is
cut off by a shut down switch that is located directly behind and below the control panel. To re-
energize the controls for troubleshooting, pull the white plunger on the shut down switch up.
Accessing Control Panel Components
O
PERATOR
S G C
ILVER TAR AS ONVECTION
Location of Wiring Diagram
' M 1181887 3
S ANUAL REV
T
ROUBLESHOOTING
O
VENS
Check or Replace
Check in series on micro amps. Minimum is 0.75 amps, no maximum.
Check gas valve. Should be 24 volts from ignition module on wires 46
and 47.
Check incoming power.
Check wire connections.
Contactor pull in and supply power to motor. Verify contactor pulling in.
If power is being supplied but motor will not turn, replace motor.
All power except for motor supply come through shut down switch.
Check for continuity.
Screw
P 43
AGE