Author: ApplianceFixGuide Team

  • How to Fix Whirlpool Refrigerator Error Er 4C

    How to Fix Whirlpool Refrigerator Error Er 4C

    Problem: Inverter DC bus overvoltage fault

    How to Fix Refrigerator Error

    1. Unplug refrigerator immediately – overvoltage can destroy inverter components.
    2. Measure household voltage at outlet – should be 110-125V AC (voltage >130V causes overvoltage faults).
    3. If household voltage exceeds 125V, contact utility company to correct voltage regulation.
    4. Remove rear access panel to access inverter board.
    5. Inspect DC bus capacitors on inverter for bulging tops or leaking electrolyte.
    6. Check for burnt components near DC bus circuitry on inverter board.
    7. Verify compressor windings aren’t shorted causing regenerative voltage spikes (measure winding resistance).
    8. If household voltage is normal and compressor tests good, inverter board has failed.
    9. Replace inverter assembly W
    10. After replacement, monitor DC bus voltage during operation using oscilloscope if available (should not exceed 380V DC).

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.


  • How to Fix Kenmore Dishwasher Error F16

    How to Fix Kenmore Dishwasher Error F16

    Problem: Door lock mechanism failure or safety interlock fault

    How to Fix Dishwasher Error

    1. Check door latch alignment and mechanical operation.
    2. Test door lock solenoid for continuity and proper engagement.
    3. Inspect door switch contacts for corrosion or damage.
    4. Verify control board door lock signals.
    5. Replace door lock assembly if mechanical or electrical failure detected.

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.


  • How to Fix Whirlpool Refrigerator Error Er 5C

    How to Fix Whirlpool Refrigerator Error Er 5C

    Problem: Inverter DC bus undervoltage fault

    How to Fix Refrigerator Error

    1. Unplug refrigerator and measure household voltage at outlet – must be minimum 105V AC.
    2. If voltage sags below 105V during compressor startup, suspect undersized household wiring or shared circuit.
    3. Verify dedicated 15-20 amp circuit is used for refrigerator (no other appliances on same circuit).
    4. Check power cord and outlet connections for looseness causing voltage drop.
    5. Remove rear access panel to access inverter board.
    6. Inspect DC bus capacitors for failure (bulging, leaking) causing inability to maintain bus voltage.
    7. Check rectifier diodes on inverter input stage for failure using diode test function on multimeter.
    8. If household voltage is stable (>110V) but error persists, replace inverter assembly W
    9. After replacement, monitor DC bus voltage during compressor startup (should maintain >280V DC).
    10. If error returns, suspect failing main control board sending incorrect start commands.

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.


  • How to Fix Kenmore Washer Error F04

    How to Fix Kenmore Washer Error F04

    Problem: Door lock failure or communication error

    How to Fix Washer Error

    1. Turn off power supply.
    2. Open washer door fully.
    3. Remove door lock assembly access panel.
    4. Inspect door lock mechanism for physical damage or debris.
    5. Check door strike plate alignment with lock mechanism.
    6. Test door lock solenoid with multimeter for proper resistance.
    7. If lock assembly is faulty, disconnect electrical connector.
    8. Remove mounting screws and replace door lock assembly.
    9. Ensure proper alignment during installation.
    10. Test door lock function and clear error code through diagnostic mode.

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.


  • How to Fix Whirlpool Refrigerator Error Er 6C

    How to Fix Whirlpool Refrigerator Error Er 6C

    Problem: Inverter communication timeout with main control board

    How to Fix Refrigerator Error

    1. Unplug refrigerator for 5 minutes to reset communication bus.
    2. Remove rear access panel to access main control board and inverter board.
    3. Locate 4-wire communication harness between main control board and inverter.
    4. Disconnect and reconnect harness at both ends, inspecting for bent pins or corrosion.
    5. Check harness routing for pinch points between cabinet panels or near sharp edges.
    6. Verify continuity on all 4 wires between connectors (no opens or shorts to ground).
    7. Inspect both boards for moisture damage or burnt components near communication ports.
    8. If harness tests good but error persists, replace inverter assembly W11338877 first.
    9. If Er 6C returns after inverter replacement, replace main control board W
    10. After repair, enter diagnostic mode and verify inverter status shows ‘COMM OK’ during operation.

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.


  • How to Fix Kenmore Dishwasher Error F17

    How to Fix Kenmore Dishwasher Error F17

    Problem: Circulation pump motor failure or blocked impeller

    How to Fix Dishwasher Error

    1. Access circulation pump assembly and check for debris.
    2. Inspect impeller for damage or blockage.
    3. Test motor windings for proper resistance and insulation.
    4. Check pump capacitor for bulging or leakage.
    5. Verify voltage to pump motor during wash cycle.
    6. Replace circulation pump assembly if necessary.

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.


  • How to Fix Kenmore Dryer Error F20

    How to Fix Kenmore Dryer Error F20

    Problem: Temperature sensor failure – heater not reaching temperature

    How to Fix Dryer Error

    1. Disconnect power at circuit breaker.
    2. Remove rear access panel.
    3. Locate thermistor sensor on blower housing.
    4. Disconnect electrical connector from sensor.
    5. Test sensor resistance with multimeter at room temperature.
    6. Compare readings to manufacturer specifications.
    7. If sensor is faulty, remove mounting screws and replace sensor.
    8. Check wiring harness for damage or corrosion.
    9. Inspect heater element connections for proper contact.
    10. Restore power and test heating cycle with temperature verification.

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.


  • How to Fix Whirlpool Refrigerator Error Er dC

    How to Fix Whirlpool Refrigerator Error Er dC

    Problem: Dispenser control fault – temperature sensor mismatch between compartments

    How to Fix Refrigerator Error

    1. Unplug refrigerator and remove rear wall panels in both compartments to access sensors.
    2. Test both refrigerator (WPW
    3. and freezer (WPW
    4. temperature sensors as described in Er rS/Er FS procedures.
    5. Verify sensor readings match actual compartment temperatures within 5°F tolerance.
    6. Check wiring harness continuity between sensors and main control board.
    7. Inspect dispenser control board (located behind dispenser housing in door) for moisture damage from spills.
    8. Disconnect dispenser board harness and check for corrosion on connector pins.
    9. Clean dispenser board connectors with electrical contact cleaner if corrosion present.
    10. If both sensors test good and wiring is intact, replace dispenser control board WPW
    11. After repair, verify dispenser functions (water, ice) operate correctly and temperature displays stabilize.
    12. Monitor for 24 hours to ensure error doesn’t return during temperature fluctuations.

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.


  • How to Fix Whirlpool Refrigerator Error Er Fd

    How to Fix Whirlpool Refrigerator Error Er Fd

    Problem: Dispenser flap failure – ice/water door not opening or closing properly

    How to Fix Refrigerator Error

    1. Unplug refrigerator and open freezer door to access dispenser mechanism.
    2. Remove dispenser cover panel (typically requires prying with flathead screwdriver at hidden clips).
    3. Locate dispenser flap solenoid or motor assembly behind dispenser housing.
    4. Manually operate flap mechanism – should move smoothly without binding.
    5. Disconnect solenoid wiring harness and measure resistance (should read 100-300 ohms).
    6. Verify 12V DC reaches solenoid during dispenser activation (test at connector while pressing dispenser paddle).
    7. Inspect flap linkage for broken plastic components or disconnected rods.
    8. Check for ice buildup around flap mechanism preventing movement (thaw with warm water).
    9. If solenoid resistance is infinite or mechanism binds mechanically, replace dispenser control assembly WPW
    10. After replacement, verify flap opens fully during dispensing and closes completely afterward to prevent frost buildup.

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.


  • How to Fix Kenmore Dishwasher Error F18

    How to Fix Kenmore Dishwasher Error F18

    Problem: Drying system malfunction or condensation fault

    How to Fix Dishwasher Error

    1. Check rinse aid dispenser level and operation.
    2. Inspect heating element for proper function during dry cycle.
    3. Test drying fan motor operation and airflow.
    4. Verify door seal integrity and proper closure.
    5. Check control board drying cycle timing and signals.
    6. Replace faulty drying system components.

    Still Not Working?

    If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.