For Service Technician Use Only
DIAGNOSTICS
2-6
n
Four Door Bottom Mount
Diagnostic Load (Service) Test
Service Test – 1 FC thermistor
•
The board will check the resistance value of the thermistor
and display flashes results on the Temp Display.
(01 = Pass, 02 = Open, 03 = Short).
Service Test – 2 RC Thermistor
•
The board will check the resistance value of the thermistor
and display the results on the Temp Display.
(01 = Pass, 02 = Open, 03 = Short).
Service Test – 3 Evaporator fan motor and air baffle motor
•
Control the RC & FC Evaporator Fan Motors by depressing
SW3. (01 = Both Fan Motor off, 02 = FC Fan on).
•
Depress SW3 once to advance. Step 3 will flash quickly and
advances to steps 13/23 very quickly. The result is RC Fan on,
Pantry Air Damper on. Pantry Air Damper will open and close
automatically. (13 = Damper Open, 23 = Damper Closed).
Verify air flow inside pantry on left hand side when damper is
open, (13 displayed). Air flow in pantry will cease when 23 is
displayed.
• Depress SW3 to advance to last step.
(04 = Both RC & FC fans on).
Service Test – 4 Compressor/condenser fan motor/evaporator
fan
• There will be a delay of 3 seconds before start of
sub step 01. Each step is timed and will be automatically
proceed to the next step. User will not be allowed to exit
step. If exit is attempted, an invalid chime will be produced.
•
Control the Sealed System loads selecting SW3.
01 = Initialize Dual Evap Valve in home position (4 min)
02 = Close both RC & FC Evap Valve (1 min)
03 = Turn compressor ON (1 min)
04 = Keep compressor ON, drive the valve to RC position &
turn RC fan ON
05 = Keep compressor ON, drive the valve to FC position &
turn FC fan ON. Verify air flow from the evaporator fan.
NOTE:
Advance quickly through step 4 to keep from locking
in. Once locked in you can’t exit, must wait ten minutes
approximately.
Service Test – 5 Compressor Status/Speed
•
Initial Display, 02 = Minimum speed
•
Depress SW3, Display = 03, Compressor ramps up to Max
speed. When Max speed reached, 01 displayed.
•
Depress SW3, Display = 04 Speed ramps down from Max to
minimum speed. When Min speed reached, 02 displayed.
Service Test – 6 Defrost Heater/Bimetal
NOTE:
If bi-metal is open, it will need to be bypassed for heater
to operate. Heater should be on. Display will be blank until a valid
reading is displayed.
01 = Bi-metal closed,
02 = Bi-metal open.
Service Test – 7 Defrost Mode
•
The defrost mode can be set by using SW3. In ADC mode, the
refrigerator will automatically defrost after a minimum of
8 hours of compressor run time up to a maximum of 96 hours
of compressor run time, depending upon refrigerator usage.
In basic mode, the refrigerator will automatically defrost after
8 hours of compressor run time.
01 = ADC ON
02 = Basic Mode ON (8 hour timer).
Service Test – 8 All UI indicators
•
Verify that all LED indicators and UI display digits turn on
automatically. All indicators ON for 30 seconds timeout.
Service Test – 9 UI Button and Pad Test
•
Displays the user Interface Buttons and Ice and Water Pads
status as described in the Component Status Indicator
column below.
NOTE:
Do not use SW4 and SW5 as these are used only to
navigate through the Service Diagnostics.
NOTE:
SW4 and SW5 are used for navigation and are not
displayed.
Service Test – 11 Dispenser Lighting
•
Pressing SW3 will change the dispenser lighting setting from
OFF (0%) to ON (100%) to DIM (50%) Status indicator is
Blank.
Service Test
–
12 Accent Light Turns on
Service Test
–
15 Ice Level Sensor
•
Displays the Ice Bin Status in real time on the UI display.
Verify that the full and not full levels display correctly.
(01 = Bin Full or not present, 02 = Bin Not Full).
Service Test – 16 RC Door Switch Input
•
Displays the RC Door status in real time on the UI display.
Verify that the open and close status display correctly.
(01 = RC Door Open, 02 = RC Door Closed).
Service Test – 17 FC Door Switch Input
•
Displays the FC Door status in real time on the UI display.
Verify that the open and close status display correctly.
(01 = FC Door Open, 02 = FC Door Closed).
Service Test – 18 Ice Door Motor
•
Displays the Ice Door stepper motor state on the UI display.
Press ice paddle and verify that the mechanical operation of
the ice door corresponds to the component status indicator.
NOTE:
Ice door will have a delay in closing after an ice paddle
is released.
(01 = Closed, 02 = Opening, 03 = Open, 04 = Closing).
Service Test – 19 Ice Maker Fill Tube Heater Status
•
Control the Ice Maker Fill Tube Heater selecting SW3 (toggle
between On and Off)
(01 = ON, 02 = Off).
Service Test – 20 Water Filter Usage Rating
•
Displays in two sequential flashes the total water usage rating
in gallons for the water filter on the UI display. Wait until
dash is displayed which means end of the number.
(00/0- to 99/9-) Example: 123 will be displayed as .
Press
SW1
SW2
SW3
SW6
Dispenser Pad
Digit 1
1
2
3
6
Digit 2
1
12 3-
