Whirlpool WRV976FDEM, Service Manual

Page: 21 / 52

For Service Technician Use Only
DIAGNOSTICS
Multi-Door Freestanding Refrigerator
n
2-7
Service Test - 58 Ice Maker Heater Activation and
Thermistor
■
Press SW3 to activate the Ice Maker Heater and to toggle
between On and Off. Digit 1 displays the state of the heater.
Digit 2 displays the thermistor state.
Digit 1
0 = IM Heater OFF
1 = IM Heater ON
Digit 2
0 - Temp warmer than harvest temp
1 = Temp cooler than harvest temp
2 = Open
3 = Short.
Service Test - 59 Ice Maker Motor
■
Press SW 3 to activate a Motor sequence and toggle through
each step. Digit 1 displays the state of the motor.
Digit 2 displays the status of the motor. Once initiated, the
sequence cannot be exited.
Digit 1
0 = Motor OFF
1 = Motor Rotating CW until home position
2 = Motor OFF
3 = Motor Rotating CCW until home position.
Digit 2
0 = In Progress
1 = Harvesting Completed,
2 = Harvesting Not Completed.
NOTE: Harvesting Not Completed does not exit the step, but
indicates the timeout of 70 seconds has passed.
Service Test - 60 Pantry UI Software Version
■
Displays in three sequential flashes the Pantry UI Control
software version on the UI display.
NOTE: This is repeatedly displayed during all time in this step.
00/00/00 to 99/99/99.
Service Test - 63 All Pantry UI indicators
■
Verify that all pantry LED indicators and pantry UI display
digits turn on automatically. All indicators ON for 30 second
timeout.
Service Test - 64 Pantry UI Button Test
■
Displays the pantry UI Buttons status.
Service Test - 65 Pantry 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 - 66 Manufacturing Codes
■
Displays the active manufacturing errors codes stored in the
UI. Press SW3 to toggle between the Errors. See status on
Temp Display E0 = No Error
E1 = LPIM Motor Faulty
E2 = Damper Cycle not completed
E3 = Thermistor Faulty
E4 = Ice Bin not present or Full
E5 = Heater Bimetal Faulty
E6 = Dispenser UI EEPROM Faulty, Er = Communication
Failure).
NOTE: Step is used by Whirlpool Manufacturing plant only.
Service Test - 67 Water Filter Switch Status
■
Displays the water filter switch status in real time on the
UI display. Verify that the open and close status display
correctly. (01 = Switch open/filter not installed, 02 = Switch
closed/filter installed).
Service Test - 73 Pantry Heater Status
■
Control the Pantry Heater selecting SW3 (toggle between On
and Off) (01 = ON, 02 = OFF).
Service Test - 76 Icebox Fascia Heater
■
Control the Icebox Fascia Heater selecting SW3 (toggle
between On and Off) (00 = OFF, 01 = ON).
Service Test - 77 Defrost Thermistor
■
The board will check the resistance value of the thermistor
and display (01 = PASS, 02 = OPEN, 03 = SHORT).
Service Test - 78 Pantry UI Flashmap Version
■
Displays in three sequential flashes the pantry UI flashmap
version on the UI Display.
NOTE: This is repeatedly displayed during all time in the step.
00/00.00 to 99/99/99.
Service Test - 80 LED Driver Software Version
NOTE: Not normally used
■
Displays in three sequential flashes the LED driver software
version on the UI Display.
NOTE: This is repeatedly displayed during all time in the step.
00/00.00 to 99/99/99.
Service Test - 81 LED Driver Flash Software Version
NOTE: Not Normally Used
■
Displays in three sequential flashes the LED driver flash
software version on the UI Display.
NOTE: This is repeatedly displayed during all time in the step.
00/00.00 to 99/99/99.
Label
Select
Control Key
SW705
Digit 1
0
Digit 2
2