TurboChef Eco Service Manual page 75

Fault Code Troubleshooting
From Test Mode, you can run oven diagnostics and check fault counts. To access Test Mode or turn on
Diagnostic mode, see page 18. To locate oven components for testing, adjustment, or replacement, see the
Appendix.
Do resistance measurements
between windings and
chassis agree with values on
motor windings resistance
table (below)? (Be sure to
check the blower motor.)
NO
Replace blower motor.
Test for voltage on the J1 connector.
1. Ground pin 5 of the J1 connector.
2. While pin 5 is grounded, check the
terminals on the control wiring plug
for 0-10 VDC across pins 1 and 2 of
the J1 connector (see page 63) while
incrementing the blower speed in test
mode.
Is DC voltage present throughout all speed
settings in test mode on the J1 connector?
To
Black
Black
Red
Black, Red, or White
Figure 83: Motor Windings Resistance Table
Troubleshooting:
F1: BLOWER (Blower Running Status Bad)
Is the blower motor
YES
spinning freely?
Are Status Indicators
YES
"B" and "T" backlit in
test mode? (page 18)
Replace the
BMSC.
YES
From
Red
White
White
Green
NO
NO
YES
1. Disconnect control wiring (blower = J1
connector).
2. Ground pin 5 of the J1 connector (Status
OK wire) to chassis to remove the back-
light from status indicators "B" and
"T"(see page 19, step 2).
Were the back-lights removed from the status
indicators while pin 5 was grounded?
YES
Description
Winding (A-B)
Winding (A-C)
Winding (B-C)
Windings to Chassis
Remove obstruction
or if necessary,
replace blower
motor.
Check the wire
harness and if
necessary, replace the
Sage control board.
NO
NO
Expected Resistance
5.9-7.3 Ohms
5.9-7.3 Ohms
5.9-7.3 Ohms
Open
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