Diagnostic Load (Service) Test - Whirlpool KRMF606ESS Service Manual

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 Mtr. 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, 912 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 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/Sensor
■ Switch on the defrost heater, wait 0.5 seconds and read the
status of bimetal/sensor. Display will be blank until a valid
reading is displayed.
01 = Bimetal Closed/Sensor Short
02 = Bimetal Open/Sensor Open
03 = Pass (only in case a defrost sensor is present).
Service Test - 7 Defrost Mode
■ Set the Defrost Mode using CHANGE SETTING KEYs. This
value shall be stored on EEPROM (in the next Power-up the
Defrost Mode shall be initialized according to this setting.)
Initial display 01 = ADC ON
02 = Basic Mode ON (8 hour timer).
For Service Technician Use Only

Diagnostic Load (Service) Test

Service Test - 8 All UI indicators
■ Verify that all LED indicators and UI display digits turn on
automatically. All indicators ON for 30 second 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.
Press
SW1
SW2
SW3
SW6
Dispenser Pad
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 - 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 Left 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 = FC Door Open, 02 = FC Door Closed).
Service Test - 17 RC Right, Pantries, FC Doors 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
Multi-Door Freestanding Refrigerator
DIAGNOSTICS
Digit 1 Digit 2
1
2
3
6
1
12 3-
.
n
2-5