Whirlpool KRFC604FSS - Page 33

For Service Technician Use Only
DIAGNOSTICS
French-Door Boom Mount Refrigerator
n
1-29

Key components for the water supply and dispensing include: the
isolaon vavle, water valve, interconnecng wiring, water tubing,
Dispenser UI, Water Paddle Switch, and interconnecng wiring.

NOTE: This test also operates the Isolaon Valve.
• Ensure display reads “on” for about 5 seconds, then reads
“oFF”
• Check that water dispenses from the Dispenser.
If display did not read “on”
• Replace Dispenser UI.
If water dispensed, check inputs:

• Press Water Paddle. Ensure Display reads “1”
If display does not read “1” ensure all wiring connectors are
ght.
If all connectors are ght, replace the Water Paddle, or
switch, as appropriate.
• Press “Measured Fill” on the Dispenser UI. Ensure Display
reads “1”
If display does not read”1” while buon is pressed, Ensure all
wiring connectors are ght.
If all connectors are ght, Replace the Dispenser UI.
If water did not dispense in Service Test 96:
• Check connuity of the Isolaon Valve and Water Valve.
• Check all wiring connectors are ght,
• Check for blockages in water tubing.

Key components for ice producon and dispensing include:
 Isolaon Valve, Dispenser U, Door Ice Maker
water valve, Fill Tube Heater, and Freezer Ice Maker water valve
and ll tube heater (some models).
Ice Box Thermistor, Ice Box Fan, FC Thermistor.
 Ice Bucket Switch, Ice Maker including the
Ice Tray Thermistor, and IM Motor, and IM Motor Switch.
Ice Dispensing: Auger Motor and Ice Door Motor.

Run the appropriate Service Tests for the aected Ice Maker. It
is best to check the thermistors rst. This will provide accurate
temperature condions to troubleshoot with.




• Ensure none of the thermistors are Open “OP” or Shorted
“SH”. Replace any faulty thermistors.
• NOTE: To replace the Door Ice Box Thermistor or Ice Tray
thermistor, replace the Ice Maker.

If the Ice Box is not at the proper temperature, check the supply
of cold air to the Ice Box.

Ensure LED Display shows “on”
• Check that the fan is operang
If fan is not operang:
• Check all wiring connectors ght (FIGURE 17).
• Check integrity of wiring between control board and fan.
(Connuity or Voltage check as appropriate)
If wiring check indicates bad wiring:
• Replace wiring harness
If wiring checks OK, or if fan is sll not operang:
• Replace fan.
If LED Display does not show “on”:
• Replace GF2 board

If temperatures in the Ice Box are appropriate, check wheher or
not there is ice/water in the Ice Tray. If no water is present, test
the Ice Maker Water Supply. If Ice is present, proceed to the next
secon, Ice Maker Harvest Test.

or

 This test also operates the Isolaon Valve.
• Ensure display reads “on” for about 5 seconds, then reads
“OFF”
• Check that water is dispensed into the Ice Maker.
If display did not read “on”
• Replace Dispenser UI (Door Ice Maker).
• Replace GF2 board (Freezer Ice Maker).
If water did not ll the Ice Maker:

or

• Ensure the diplay shows “on”
• Leave in Test for about 15 minutes
• Re-run Service Test 97 or 98 to test the appropriate Ice Maker
Fill Valve.
If Water sll does not dispense:
• Perform resistance checks on Fill Tube Heater
• Perform resistance checks on Isolaon and Ice Maker Fill
Valves.
• Check all wiring connectors are ght.
• Check for blockages of the water tubing.







The Ice Maker Harvest Test checks the funconality of the Ice
Maker motor and Motor Posion Switch.