Whirlpool WRF954CIHV Service Manual page 33

Water Troubleshooting
Key components for the water supply and dispensing include: the
isolation vavle, water valve, interconnecting wiring, water tubing,
Dispenser UI, Water Paddle Switch, and interconnecting wiring.
Run Service Test 96 - Water Valve General Test
NOTE: This test also operates the Isolation 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:
Run Service Test 93 - UI Button and Pad/Paddle Test
• Press Water Paddle. Ensure Display reads "1"
If display does not read "1" ensure all wiring connectors are
tight.
If all connectors are tight, 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 button is pressed, Ensure all
wiring connectors are tight.
If all connectors are tight, Replace the Dispenser UI.
If water did not dispense in Service Test 96:
• Check continuity of the Isolation Valve and Water Valve.
• Check all wiring connectors are tight,
• Check for blockages in water tubing.
Ice Troubleshooting
Key components for ice production and dispensing include:
Water Supply: Isolation Valve, Dispenser U, Door Ice Maker
water valve, Fill Tube Heater, and Freezer Ice Maker water valve
and fill tube heater (some models).
Cold Air Supply: Ice Box Thermistor, Ice Box Fan, FC Thermistor.
Ice Making Module: 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.
Thermistor Checks
Run the appropriate Service Tests for the affected Ice Maker. It
is best to check the thermistors first. This will provide accurate
temperature conditions to troubleshoot with.
Run Service Test 14 - Door Ice Box Thermistor
Run Service Test 02 - FC Thermistor
Run Service Test 16 - Door Ice Maker Tray Thermistor
Run Service Test 17 - Freezer Ice Maker Tray Thermistor
• 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.
Cold Air Supply
If the Ice Box is not at the proper temperature, check the supply
of cold air to the Ice Box.
Run Service Test 59 – Ice Box Fan Test
Ensure LED Display shows "on"
• Check that the fan is operating
For Service Technician Use Only
If fan is not operating:
• Check all wiring connectors tight (FIGURE 17).
• Check integrity of wiring between control board and fan.
(Continuity or Voltage check as appropriate)
If wiring check indicates bad wiring:
• Replace wiring harness
If wiring checks OK, or if fan is still not operating:
• Replace fan.
If LED Display does not show "on":
• Replace GF2 board
Ice Maker Water Supply
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
section, Ice Maker Harvest Test.
Run Service Test 97 - Door Ice Maker Valve General Test
Run Service Test 98 - Freezer Ice Maker Valve General Test
Note: This test also operates the Isolation 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 fill the Ice Maker:
Run Service Test 66 - Door Ice Maker Fill Tube Heater Test
Run Service Test 67 - Freezer Ice Maker Fill Tube Heater Test
• 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 still does not dispense:
• Perform resistance checks on Fill Tube Heater
• Perform resistance checks on Isolation and Ice Maker Fill
Valves.
• Check all wiring connectors are tight.
• Check for blockages of the water tubing.
Resistance Checks
Isolation Valve
Door Ice Maker Water Valve
Door Ice Maker Fill Tube Heater
Freezer Ice Maker Water Valve
Freezer Ice Maker Fill Tube Heater
Ice Maker Module Tests
The Ice Maker Harvest Test checks the functionality of the Ice
Maker motor and Motor Position Switch.
French-Door Bottom Mount Refrigerator
DIAGNOSTICS
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