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Initiate Temperature Units Selection Mode to
check units of measure (°F or °C) selected.
Check thermistor ohms = 30,000 - 33,000 at
32°F. Replace if defective. If thermistor is
OK, replace control board.
Contact Factory for DC Offset Adjustment
Procedure.
Instruct Customer.
Check set-points. Adjust set-points WARMER
a. Adjust wine rack
b. Adjust the door.
c. Check hinges. Replace if defective.
Check thermistor ohms = 30,000 - 33,000 at
32°F. Replace if defective. If thermistor is
OK, replace control board.
Instruct Customer.
Check set-point. Adjust set-points WARMER
a. Adjust wine rack
b. Adjust the door.
c. Check hinges. Replace if defective.
Initiate Manual Valve Activation Mode for one
side, then the other, while observing evap
temps. If only one side of valve activates,
replace valve.
Press & release LIGHTS key.
Check wiring at fan & light switch, and at con-
trol board. Rewire if incorrect.
Press & release LIGHTS key, then depress
door switch. Repeat steps. If no effect,
replace switch.
6-11
PROBLEM
POSSIBLE CAUSE
TEST / ACTION
#7040748 - Revision A - September, 2016
MODEL UW-24
MODEL UW-24
Troubleshooting Guides
D. ACTUAL VS. DISPLAYED
TEMPERATURE OVER 10°
DIFFERENT
E.
ACTUAL VS. DISPLAYED
TEMPERATURE LESS
THAN 10° DIFFERENT
F.
EXCESSIVELY COLD TEM-
PERATURES IN BOTH
WINE STORAGE COM-
PARTMENTS
G.
EXCESSIVELY COLD TEM-
PERATURES IN ONLY ONE
WINE STORAGE COM-
PARTMENT
H. LIGHTS STAY ON
Wrong Units of Measure Selected,
(Fahrenheit - °F vs. Celsius - °C)
Compartment Thermistor Fault
(Misread), or Control Board Fault
Control Board DC Offset Out of
Adjustment
Room Temperature Below Set-Point
Control Set Too Cold
Door Ajar
a. Wine Rack Obstruction
b. Door out of Adjustment
c. Door or Cabinet Hinge Problem
Compartment Thermistor Fault
(Misread), or Control Board Fault
Room Temperature Below Set-Point
Control Set Too Cold
Door Ajar
a. Wine Rack Obstruction
b. Door out of Adjustment
c. Door or Cabinet Hinge Problem
Refrigerant Valve Stuck
Display Lighting Activated (ON 100%)
Fan & Light Switch Wiring Crossed
Door Switch Malfunction
