Whirlpool KRMF606ESS - Service Test Execution

For Service Technician Use Only
DIAGNOSTICS
Multi-Door Freestanding Refrigerator
n
2-5
Diagnostic Load (Service) Test

■ The board will check the resistance value of the thermistor
and display ashes results on the Temp Display.
(01 = Pass, 02 = Open, 03 = Short).

■ The board will check the resistance value of the thermistor
and display the results on the Temp Display.
(01 = Pass, 02 = Open, 03 = Short).


■ Control the RC & FC Evaporator Fan Motors by depressing
SW3. (01 = Both Fan Mtr. o, 02 = FC Fan on).
■ Depress SW3 once to advance. Step 3 will ash 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
automacally. (13 = Damper Open, 23 = Damper Closed.
Verify air ow inside pantry on le hand side when damper is
open, 912 displayed). Air ow in pantry will cease when 23 is
displayed.
■ Depress SW3 to advance to last step.
(04 = Both RC & FC fans on).


■ There will be a delay of 3 seconds before start of sub step
01. Each step is med and will be automacally proceed to
the next step. User will not be allowed to exit step. If exit is
aempted, an invalid chime will be produced.
■ Control the Sealed System loads selecng SW3.
01 = Inialize Dual Evap Valve in home posion (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 posion &
turn RC fan ON
05 = Keep compressor ON, drive the valve to FC posion &
turn FC fan ON. Verify air ow 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.

■ Inial 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.

■ Switch on the defrost heater, wait 0.5 seconds and read the
status of bimetal/sensor. Display will be blank unl 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).

■ 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 inialized according to this seng.)
Inial display 01 = ADC ON
02 = Basic Mode ON (8 hour mer).

■ Verify that all LED indicators and UI display digits turn on
automacally. All indicators ON for 30 second meout.

■ Displays the user Interface Buons 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 Diagnoscs.
NOTE: SW4 and SW5 are used for navigaon and are not
displayed.

■ Pressing SW3 will change the dispenser lighng seng from
OFF (0%) to ON (100%) to DIM (50%) Status indicator is Blank.

■ Displays the Ice Bin Status in real me on the UI display.
Verify that the full and not full levels display correctly.
(01 = Bin Full or not present, 02 = Bin Not Full).

■ Displays the RC Door status in real me on the UI display.
Verify that the open and close status display correctly.
(01 = FC Door Open, 02 = FC Door Closed).


■ Displays the FC Door status in real me on the UI display.
Verify that the open and close status display correctly.
(01 = FC Door Open, 02 = FC Door Closed).

■ Displays the Ice Door stepper motor state on the UI display.
Press ice paddle and verify that the mechanical operaon of
the ice door corresponds to the component status indicator.
NOTE: Ice door will have a delay in closing aer an ice paddle
is released.
(01 = Closed, 02 = Opening, 03 = Open, 04 = Closing).

■ Control the Ice Maker Fill Tube Heater selecng SW3 (toggle
between On and O) (01 = ON, 02 = O).

■ Displays in two sequenal ashes the total water usage rang
in gallons for the water lter on the UI display. Wait unl
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-