Electrolux EFLS627UTT (Front Load) – Control board failure Repair Guide

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🔩 Control board failure Repair Guide for Electrolux EFLS627UTT (Front Load)

💡 Don’t panic! Control board failure on your Electrolux EFLS627UTT (Front Load) is a common issue that many DIY enthusiasts can fix themselves. This comprehensive guide will walk you through the repair process step by step.

📋 What You’ll Need

  • Control board
  • Board connectors
  • Multimeter

    • ⚠️ Safety First

    Before you begin, always:

    • Unplug the washing machine from power
    • Turn off water supply valves
    • Allow the machine to cool down if it was recently running
    • Have a clean, well-lit workspace

      • 🔧 Step-by-Step Repair Instructions

      🔍

      🔧 Step 1: Check for burnt components

      1. Unplug the washing machine power cord from the wall outlet and wait 5 minutes for capacitors to discharge.
      2. Turn off both hot and cold water supply valves located on the wall behind the washer by rotating them clockwise until they stop.
      3. Pull the washer 3 feet away from the wall to access the rear panel.
      4. Remove the 8 Phillips-head screws (#2 screwdriver) securing the top panel – 2 screws at the rear top corners, 3 along the back edge spaced 8 inches apart, and 3 along the front edge under the control panel lip.
      5. Lift the top panel up and tilt it back 90 degrees until it rests against the wall.
      6. Locate the main control board mounted on the right side panel, 4 inches below the top edge – it’s a green circuit board measuring approximately 6×8 inches with a clear plastic cover.
      7. Inspect the control board through the plastic cover for black discoloration, melted plastic, or bubbled components – these appear as dark brown or black spots on the green board surface.
      8. Remove the plastic cover by pressing inward on the 4 corner tabs and lifting upward.
      9. Use your smartphone flashlight to examine all wire connectors for brown or black burn marks where they plug into the board – pay special attention to the large white 8-pin connector at the top left corner and the blue 6-pin connector at the bottom right.
      10. Follow the wire harnesses down to the door lock assembly located at the front right of the door opening, 2 inches from the door seal – look for melted wire insulation or discolored plastic housing.
      11. Inspect the drain pump mounted at the bottom front center, 3 inches above the floor – burnt components smell distinctly acrid and the pump housing will show brown or black melting.
      12. Check the heating element terminal connections at the bottom rear, 8 inches from the right side – burnt terminals appear blackened with white chalky residue.

      🛠️ Step 2: Inspect board for damage

      1. Position the control board you’ve removed on a clean, flat work surface under bright lighting – a kitchen table with a lamp works well for viewing small components.
      2. Examine the board’s surface for burn marks, which appear as black or brown discoloration typically around larger components like transformers or relay switches, usually located in the upper right quadrant of the board.
      3. Look for bulging or leaking capacitors – these are cylindrical components approximately 0.5-1 inch tall; the top should be completely flat, not domed or split, and no brown or yellow fluid should be visible at the base.
      4. Check all solder joints on the board’s underside by flipping it over; good solder joints look shiny and cone-shaped, while damaged joints appear cracked, dull gray, or have visible gaps between the component lead and the circuit board pad.
      5. Inspect the 6 relay switches (small rectangular boxes measuring approximately 0.75 x 0.5 inches) for cracks in their plastic housing or scorch marks on adjacent board material.
      6. Examine the connector terminals where wire harnesses plug in – count 4 main connectors along the left edge; check for melted plastic, blackened metal pins, or white/green corrosion residue.
      7. Use a flashlight held at a 45-degree angle to the board surface to identify hairline cracks in the green circuit board material itself, particularly around mounting screw holes and connector areas.
      8. Check the microprocessor chip (the largest black rectangular component, approximately 1 x 0.75 inches, located center-board) for cracks in its black plastic casing.
      9. Note the specific location of any damage using the white reference designators printed on the board (such as “R12”, “C5”, “U3”) to identify components for ordering replacements.

      ⚙️ Step 3: Test board connections

      1. Set your digital multimeter to DC voltage mode, 200V range.
      2. Locate the main control board behind the control panel at the top front of the washer – it’s a green rectangular circuit board measuring approximately 8 inches wide by 5 inches tall.
      3. Identify the wire harness connector P1 on the left side of the control board – this is a white 12-pin connector with wires running to the door lock assembly.
      4. Place the black multimeter probe on any metal frame ground point on the washer chassis.
      5. Turn the multimeter dial to continuity test mode (looks like a sound wave symbol).
      6. Touch the red probe to each of the 12 metal pins visible inside connector P1 while it remains plugged in – you should hear a beep on at least 8 of the 12 pins, indicating good connections.
      7. Move to connector P2 on the right side of the board – this is a gray 6-pin connector with wires leading to the pressure sensor.
      8. Press firmly on connector P2 with your thumb applying 5-10 pounds of pressure – the connector should not move or click further into place (movement indicates a loose connection).
      9. Locate connector P3 at the bottom center of the board – this is a black 8-pin connector with thick gauge wires going to the motor.
      10. Grip connector P3 and pull straight outward with 15-20 pounds of force – it should remain firmly seated and not release (it requires a tab release to disconnect properly).
      11. Switch multimeter back to DC voltage, 200V range.
      12. Touch red probe to the leftmost pin of connector P3 (this is the incoming line voltage) and black probe to ground – reading should show 0V with the washer unplugged, confirming no stored voltage present.

      🔩 Step 4: Replace control board

      1. Locate the main control board mounted on the back wall of the washer cabinet, positioned approximately 8 inches down from the top edge and centered horizontally.
      2. Identify the wire harness connectors attached to the control board – you’ll see 5 connectors: one large white 20-pin connector at the top, two medium gray 8-pin connectors in the middle, one small black 4-pin connector on the left, and one blue 6-pin connector on the right.
      3. Press the locking tab on the large white 20-pin connector at the top of the board and pull it straight out until it releases (requires approximately 3-4 pounds of pulling force).
      4. Disconnect the two gray 8-pin connectors by squeezing the side tabs while pulling away from the board.
      5. Remove the small black 4-pin connector by lifting the top locking lever 90 degrees, then sliding the connector straight up.
      6. Disconnect the blue 6-pin connector by pressing down on its center release tab with your thumb while pulling the connector housing away.
      7. Remove the four T20 Torx screws securing the control board to the mounting bracket – two screws located at the top corners and two at the bottom corners of the board, each recessed approximately 1/8 inch into plastic standoffs.
      8. Lift the control board straight up and away from the four mounting posts.
      9. Align the new control board (part number 137006050) with the four mounting posts and press down firmly until the board seats flush against all standoffs.
      10. Install the four T20 Torx screws and tighten until snug (approximately 8-10 inch-pounds – stop when the screw head contacts the board surface).
      11. Reconnect all five wire harnesses in reverse order, pushing each connector until you hear or feel a distinct click indicating the locking mechanism has engaged.

      📋 Step 5: Test all functions

      1. Press the power button on the control panel at the top left of the washer door to turn the unit on. The display screen will illuminate with a blue backlight showing “Wash” as the default setting.
      2. Run the drain pump test by pressing and holding the “Spin Speed” and “Options” buttons simultaneously for 3 seconds until you hear a single beep. The drain pump will activate for 30-60 seconds and expel any water through the drain hose.
      3. Test the door lock mechanism by closing the washer door firmly until you hear two distinct clicks. Press the “Start/Pause” button once. Within 5 seconds, you’ll hear the door lock solenoid engage with an audible click and see the door lock indicator light illuminate red on the display panel.
      4. Verify the water inlet valves by selecting the “Normal” cycle and pressing “Start/Pause.” Open your washer door slightly to observe water entering through both the left and right dispenser channels. You should see steady water flow within 10 seconds. Press “Start/Pause” to stop the cycle after 20 seconds of water flow.
      5. Check the drum rotation by selecting the “Spin” cycle using the cycle selector knob. Press “Start/Pause” and observe through the door window. The drum will begin rotating clockwise at low speed within 15 seconds, gradually increasing to approximately 1,200 RPM over 2 minutes.
      6. Test the heating element by selecting “Heavy Duty” cycle and setting the temperature to “Hot.” Press “Start/Pause” and let the cycle run for 5 minutes. Open the detergent dispenser drawer at the top front and place your hand 2 inches above the water inlet—you’ll feel warm air rising, indicating the heater is functioning.
      7. Press “Start/Pause” to stop the test cycle, then press and hold the power button for 2 seconds to turn off the unit completely.

      💡 Pro Tips

      Take photos as you disassemble components – they’ll be invaluable when putting everything back together. If you encounter resistance or something doesn’t seem right, stop and reassess rather than forcing it.

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