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Service Code Number
Mode
Comments
71
Freezer Back Wall
Heater
Diagnostic code 71 turns on the Freezer back wall heater
for wine mode. This heater is used on All convertible units.
When activated the main board sends 120 VAC to the
wall heater from K106 pins 5-6 (black to white). The wall
heater resistance (960
Ω
) can also be checked from the
same connection.
Service Code Number
Mode
Comments
78 and 79
Buzzer and Display
Control Test
Diagnostic code 78 activates/tests the display control
beeper. Code 79 will light all segments of the display. If
the display does not light in any mode check for supply
voltage at K205 pins 7-8 to common on pins 1-2 for
5 VDC. If the voltage is not present check the main board
K111 for the same control voltages.
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