Dishwasher heating element mystery solved: test it like a pro without any hassle
What To Know
- The heating element in a dishwasher is responsible for heating the water to the proper temperature for dishwashing.
- Disconnect one of the wires from the heating element and touch the probe of the multimeter to the terminal on the heating element and the other probe to the electrical ground wire (usually green or bare copper).
- If the multimeter displays a reading of zero or a very low resistance, it indicates a ground fault and the heating element needs to be replaced.
Dishwashers are an essential appliance in modern kitchens, but when they malfunction, it can be a major inconvenience. One common issue that can occur is a faulty heating element, which prevents the dishwasher from effectively cleaning dishes. While it’s tempting to call a professional to fix the issue, it’s possible to test the heating element yourself without removing it, saving time and money.
Understanding the Dishwasher Heating Element
The heating element in a dishwasher is responsible for heating the water to the proper temperature for dishwashing. It is typically located at the bottom of the dishwasher tub and consists of a metal coil that is heated by an electrical current.
Symptoms of a Faulty Heating Element
Here are some signs that may indicate a faulty heating element:
- Dishes are not getting clean or sanitized
- Water remains cold during the wash cycle
- Dishwasher takes longer to complete a cycle
- Error messages or indicator lights related to heating
How to Test Dishwasher Heating Element Without Removing
1. Safety Precautions
Before testing the heating element, unplug the dishwasher from the power outlet and turn off the water supply. Wear rubber gloves to protect your hands from electrical shock.
2. Access the Heating Element
Most dishwashers have a removable lower rack or access panel that allows you to reach the heating element. Locate this access point and remove any screws or clips holding it in place.
3. Disconnect the Heating Element
Once you have access to the heating element, disconnect the electrical wires that are connected to it. There may be two or more wires, depending on the dishwasher model. Take a picture of the wiring before disconnecting to ensure proper reassembly later.
4. Use a Multimeter
A multimeter is an electrical testing device that can measure voltage, resistance, and current. Set the multimeter to the “ohms” setting.
5. Test for Continuity
Place one probe of the multimeter on one terminal of the heating element and the other probe on the other terminal. If the multimeter displays a reading of zero or a very low resistance, it indicates that the heating element is continuous and functioning properly. If the multimeter displays an “OL” (open loop) reading, it indicates that the heating element is not continuous and needs to be replaced.
6. Test for Ground Faults
Disconnect one of the wires from the heating element and touch the probe of the multimeter to the terminal on the heating element and the other probe to the electrical ground wire (usually green or bare copper). If the multimeter displays a reading of zero or a very low resistance, it indicates a ground fault and the heating element needs to be replaced.
7. Reassemble the Dishwasher
Once you have tested the heating element, reconnect the electrical wires and reassemble the dishwasher. Ensure that all screws or clips are securely fastened.
Troubleshooting Tips
If the heating element tests as faulty, you may need to replace it. Here are some tips for troubleshooting:
- Check the thermostat or temperature sensor to ensure it is functioning properly.
- Inspect the wiring for any damage or loose connections.
- Make sure the dishwasher is getting enough water pressure.
- Run a diagnostic cycle on the dishwasher to identify any other potential issues.
Wrap-Up: Ensuring Dishwasher Efficiency
Testing the dishwasher heating element without removing it is a simple and effective way to diagnose and resolve heating-related issues. By following the steps outlined in this guide, you can restore your dishwasher to optimal performance, ensuring clean and sanitized dishes for your family.
Basics You Wanted To Know
1. Can I test the heating element with a standard voltmeter?
No, a standard voltmeter does not provide enough current to test the heating element properly. A multimeter is the recommended tool for this task.
2. What if the heating element tests as faulty but the dishwasher is still heating water?
The thermostat or temperature sensor may be malfunctioning, causing the heating element to overheat. Contact a qualified technician for further diagnosis.
3. How often should I test the heating element?
It is not necessary to test the heating element regularly unless you experience issues with the dishwasher’s cleaning performance or water temperature.