900 and 9100 Series Step-by-Step Trouble Shooting by Diagnostic Fault Indicators
This section is intended to serve as a check list to aid the repair technician in solving a problem. Look at the fault indicator
(Diagnostic Fault Indicators and Corrective Actions on page 13) and its meaning, then follow the guide to correct the problem.
Section 1 - No Display on Display Panel
Corrective Action
1.
Battery charging equipment or converter.
2.
Input DC supply voltage to the refrigerator’s
control board. Correct if DC Voltage is below 10.5
VDC.
3.
12 VDC supply wire connections to the control board.
Correct if loose.
4.
Remove the control board cover and check the 3 Amp
control voltage fuse. Replace if defective.
5.
If the 3 amp fuse blows after replacement, insure the
interior light cover is installed correctly. If the 3 amp
fuse continues to blow, disconnect the light wires from
the light bracket. Start refrigerator. If fuse does not
blow, replace light bracket. If fuse blows, replace con-
trol board.
Caution: A circuit overload can result in an
electrical fire when incorrect size fuses are
used. To prevent a possible electrical fire,
replace a blown fuse with the exact replace-
ment. Refer to "Specifications" chart on page
4 for correct fuse size and type.
6.
Check wire harness connection to control board. Secure
connection if needed.
7.
At front of refrigerator, remove front display panel to
gain access to wire harness connection.
8.
Inspect pins of the wire harness. Insure they are seated
within the connector.
9.
Check for 12 VDC between points A and B (Figure 4).
10.
If 12 VDC is present, replace front display panel. If 12
VDC is not present, replace power board.
Figure 3
12 VDC
Supply Wires
Wire Harness
connection.
3 Amp control
voltage fuse
30 Amp DC
Heater Fuse
5 Amp Fuse
Figure 4
A
Top of Connector
B
Wire Harness
15
Summary of Contents for 9162
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