Fault Code Troubleshooting; F1: Blower (Blower Running Status Bad) - TurboChef High h batch 2 Service Manual

28 DIAGNOSING AN ISSUE

Fault Code Troubleshooting

Do resistance measurements
between windings and
chassis agree with values on
motor windings resistance
table (below)?
Check the wire harness and
if necessary, replace blower
motor.
T O
Black
Black
Red
Black, Red or White
F i g u re 3 0 : Motor Windings Resistance Table

F1: BLOWER (Blower Running Status Bad)

YES
YES
NO
1. Test pin 1 of QC-11 connector for
control voltage.
2. Ground one lead and insert other into
pin 1 of the QC-11.
Is 0-10 VDC present throughout all speed
settings in Test Mode?
YES
Check the wire harness and
if necessary, replace BMSC.
F ROM
Red
White
White
Green
Troubleshooting:
Is the blower motor
spinning freely?
Is Status Indicator "A"
backlit in Test Mode?
(page 25)
NO
YES
YES
NO
Check the wire harness
and if necessary, replace
the control board.
D ES C RIPT IO N
Winding (A-B)
Winding (A-C)
Winding (B-C)
Windings to Chassis
Remove obstruction
or if necessary, replace
NO
blower motor.
1. Locate the QC-11
Connector (6-pin
connector located on the
top-right side of the
oven, see page 49 for
schematic).
2. Disconnect the QC-11
Connector.
3. Ground pin 5 of the QC-
11 connector to the
chassis. Observe status
indicator on the display.
Does the "A" backlight
disappear when pin 5 is
grounded?
NO
E xP ECT ED RE SI STANCE
2.0-2.6 Ohms
2.0-2.6 Ohms
2.0-2.6 Ohms
Open