Actual Vs. Displayed Temperature Over 10° Different; Actual Vs. Displayed Temperature Less Than 10° Different; Excessively Cold Temperatures In Both Wine Storage Compartments; Excessively Cold Temperatures In Only One Wine Storage Compartment - Wolf Sub-Zero ICB400 Series Service Manual

International W
International W
PROBLEM
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
I.

NO LIGHTS

ine Storage
ine Storage
POSSIBLE CAUSE
Wrong Units of Measure Selected,
(Celsius - °C vs. Fahrenheit - °F)
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
Light Switch Malfunction
Unit in Sabbath Mode
Light Switch Disconnected or
Malfunctioning
Light Strip Burned-out
No Power from Control Board
7-13
Series
Series
(ICB400)
(ICB400)
Initiate Temperature Units Selection Mode to
check units of measure (°C or °F) selected.
Check thermistor ohms = 30,000 - 33,000 at
0°C (32°F). Replace if defective. If thermis-
tor 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. See Door Adjustment procedure in section
2 of this manual.
c. Check hinges. Replace if defective.
Check thermistor ohms = 30,000 - 33,000 at
0°C (32°F). Replace if defective. If thermis-
tor is OK, replace control board.
Instruct Customer.
Check set-point. Adjust set-points WARMER
a. Adjust wine rack
b. See Door Adjustment procedure in sec-
tion 2 of this manual.
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
light switch. Repeat steps. If no effect,
replace switch.
Press & release POWER key.
Check switch operation and electrical connec-
tions. Check for 230V AC to and from switch.
Reconnect wires or replace switch if defective.
If power from switch, replace light strip.
Check for 230V AC at E3 of control board. If
no power, replace board.
7011544 - Revision A - November, 2008
TroubleShoot Guide
TEST / ACTION