Restore your dishwasher to its prime: how to test whirlpool dishwasher control boards for efficiency
A dishwasher’s control board is its brain, coordinating all its functions. If your Whirlpool dishwasher is acting up, testing the control board is a crucial step in diagnosing the issue. This guide will provide a comprehensive walkthrough of the testing process, empowering you to troubleshoot like a pro.
Understanding the Control Board
The control board is a complex electronic circuit board located inside the dishwasher’s door panel. It receives inputs from various sensors and switches, processes them, and sends commands to the dishwasher’s components.
Tools Required
- Multimeter
- Screwdriver
- Electrical tape
Safety Precautions
- Unplug the dishwasher from the power outlet.
- Turn off the water supply.
- Wear safety glasses.
Step-by-Step Testing Procedure
1. Inspect the Control Board
- Remove the door panel to access the control board.
- Visually inspect the board for any signs of damage, such as burnt components or loose wires.
2. Test Power Supply
- Set your multimeter to AC voltage mode.
- Connect the black probe to the neutral wire and the red probe to the hot wire.
- The multimeter should read 120 volts.
3. Test Ground Connection
- Connect the black probe to the ground wire and the red probe to the neutral wire.
- The multimeter should read 0 volts.
4. Test Sensor Inputs
- Identify the sensor connections on the control board.
- Set your multimeter to DC voltage mode.
- Connect the black probe to the ground wire and the red probe to each sensor terminal.
- The multimeter should read a voltage within the manufacturer’s specifications.
5. Test Switch Inputs
- Identify the switch connections on the control board.
- Set your multimeter to continuity mode.
- Connect the black probe to the ground wire and the red probe to each switch terminal.
- The multimeter should beep when the switch is pressed.
6. Test Relay Outputs
- Identify the relay connections on the control board.
- Set your multimeter to DC voltage mode.
- Connect the black probe to the ground wire and the red probe to each relay terminal.
- The multimeter should read a voltage when the relay is activated.
7. Test Communication with Other Components
- Use an electrical tape to isolate the control board from the other components.
- Power up the dishwasher.
- If the dishwasher functions normally, the control board is likely faulty.
Troubleshooting Tips
- If the control board shows signs of damage, replace it.
- If the power supply or ground connection is faulty, check the wiring and connections.
- If a sensor or switch is not providing the correct input, replace the component.
- If a relay is not activating, check the relay coil and wiring.
Takeaways: Unlocking Dishwasher Control Board Secrets
Testing a Whirlpool dishwasher control board requires a systematic approach, proper tools, and safety precautions. By following the steps outlined in this guide, you can effectively diagnose and repair any issues with your dishwasher’s brain. Empower yourself with the knowledge to keep your dishwasher running smoothly.
Popular Questions
Q: Can I test the control board without removing it from the dishwasher?
A: No, removing the control board is necessary for proper testing.
Q: What if my multimeter doesn‘t read any voltage or continuity?
A: Check the multimeter’s batteries and connections. If the issue persists, the multimeter may be faulty.
Q: Can I replace the control board myself?
A: Yes, but it requires basic electrical knowledge and safety precautions. If you are not confident, consult a qualified technician.