Blower Not Running Properly - Southbend EzCom CG/12SC Operator's Manual

T
ROUBLESHOOTING

Blower Not Running Properly

Disconnect 4-pin connector. Place fan switch in
"HI" position. Locate the terminals where
Wires 21 and 55 are attached and check
for continuity between these terminals. Place
the fan switch in "LO" position. Locate the
terminals where Wires 22 and 56 are
attached. Check for continuity.
Is there
continuity in both
No
cases?
Replace
fan switch.
Check door switch actuator mechanism by
closing door and observing movement of door
switch lever. Adjust or repair as necessary.
Replace door switch as necessary.
P 32
AGE
Blower Not Running Properly (with Door Closed)
blower run when unit is
No
cold (door closed)?
Yes
Reconnect 4-pin connector.
Slide control panel out. Disconnect plug PL20 (plug
PL2 for ovens built before March 1, 2002).
Place test leads in terminals on switch side of plug.
Close door. Check for continuity.
Open door. Check for continuity.
Is there continuity with door closed
No
and no continuity with door open?
Does
Yes
Blower motor is overheating. Check operation
of cooling fan in control compartment and
replace as necessary.
Put fan switch in "LO" position.
TURN OFF GAS SHUT-OFF VALVE.
Close door. Disconnect 3-pin connector at
motor. Turn unit on. Check voltage between
Wires 25 and 8 by inserting test leads into the
harness side of plug PL22 (plug PL8 for ovens
built before March 1, 2002). The voltage should
be the rated voltage of the oven (120VAC or
208VAC, as shown on the serial plate).
No
Replace control
board.
O ' M 1182851
PERATOR S ANUAL
EZ C C
OM OMBINATION
Yes
Is voltage
the rated-voltage Yes
of oven?
Replace motor.
2
REV
O
VEN