Trystan Casey
A dishwasher that keeps tripping the electrics can be very frustrating. There are several reasons why this could be happening. A common cause is a water leak, which can wreak havoc if it gets into the motor or mains suppressor. Another cause could be a blockage in the filter or hose, which can prevent the dishwasher from draining properly. Other potential issues include faulty electrical connectors, a damaged heating element, or problems with the plug or power cord. If you're unsure of the cause, it's best to consult a professional for help.
Why does my dishwasher trip my electrics?
| Characteristics | Values |
|---|---|
| Water leakage | Check for water outside the dishwasher tub, which could be causing the breaker to trip |
| Blockage | Check for a blockage in the filter or hose, which could be causing a delay in draining |
| Heating element | A damaged or malfunctioning heating element may be using too much electricity, causing the circuit breaker to trip |
| Plug | Check the plug for damage or melting, which could be causing the circuit to trip |
| Electrical connectors | Inspect the electrical connectors of the power cord for damage, as this is typically where faults happen first |
| Circuit breaker | The circuit breaker may be tripping due to the appliance using too much electricity, which could be a result of a faulty appliance |
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What You'll Learn
Blocked filter or hose
A blocked filter or hose could be the reason your dishwasher is tripping the electrics. If your dishwasher is not draining water from the filter section, it could indicate a blockage in the filter or hose. Some dishwasher drain hoses have a check valve that can be removed from the end of the hose. If you have recently installed or replaced a garbage disposal, ensure that the cap was removed from the disposal barb where the dishwasher drain connects. Sometimes, the entire cap is not removed, so make sure there is no partial cap left in the hose.
The drain hose should come through the cabinet at a height that prevents the sink from backing up in the dishwasher. Regular dish soap residue can also cause blockages. If you see suds in the water in the dishwasher, this could be due to dish soap residue.
If your dishwasher has a leak and water is reaching electrical parts, it can cause the circuit breaker to trip. Water damage to the motor or mains suppressor can also cause the dishwasher to trip, either when idle or mid-wash.
If your dishwasher is tripping the electrics, it is advised to disconnect it from the power supply to avoid the risk of electric shock.
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Water leakage
Another cause of water leakage could be a clogged or faulty drain pump. The drain pump enables the dishwasher to drain water, and if it's not working properly, water may not be draining out, leading to potential leaks. In some cases, the wash pump may also be leaking, which can generate electrical leakage and trip the power supply. If the wash pump is the issue, it will need to be replaced.
Additionally, water leaks can be caused by a damaged water supply line, which can typically be found underneath the dishwasher. If the water supply line is damaged, it may need to be tightened or repaired. It's also important to ensure that you are using the correct detergent and the right amount, as using dishwashing soap or too much detergent can cause excessive sudsing and lead to leaks.
If you suspect a water leak, it is important to disconnect the dishwasher from the power supply to avoid any electrical hazards. Once the power is disconnected, you can inspect the dishwasher for signs of water damage or leaks. If you are unable to identify the source of the leak or are uncomfortable performing these checks, it is recommended to consult a professional dishwasher repair service. They will have the necessary tools and expertise to quickly diagnose and resolve the issue.
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Faulty electrical components
If your dishwasher is tripping the electrics, it could be due to faulty electrical components. The electrical components of your dishwasher include the plug, cord, and outlet. The plug is a common culprit, as it may have melted or become damaged, leading to an electrical short circuit. Check the plug for any signs of damage, including scorch marks or melted areas. If the plug appears intact, test it by plugging in another device to see if it works correctly.
The cord and outlet can also be inspected for any damage or melting. If you notice any issues with these components, they may need to be replaced by a qualified electrician or appliance repair technician. It is essential to disconnect the dishwasher from the power supply before performing any inspections or repairs to avoid the risk of electric shock.
In some cases, the problem may lie within the internal wiring of the dishwasher. The electrical connectors of the power cord, located at the back of the dishwasher, are particularly susceptible to faults. Overheating, twisting, bending, or cutting of the wires can lead to tears or melting, causing the wires to come into contact with the body of the dishwasher or other earthed elements. This can result in a short circuit and trip your home's main power supply.
Additionally, a water leak within the dishwasher can cause electrical issues. If water comes into contact with electrical parts, it can lead to a short circuit and trip the breaker. Inspect your dishwasher for any signs of leakage or dampness, especially around the motor or mains suppressor. If you find evidence of a leak, addressing it will likely resolve the tripping issue.
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Damaged heating element
A dishwasher uses a heating element to heat the water inside it. The heating element is found at the bottom of the dishwasher tub and is responsible for heating the water to the appropriate temperature. It also plays a crucial role in the dry cycle, heating the air that helps evaporate the water off the dishes.
If your dishwasher is connected to the hot water line, you should check the temperature of the dishes after the cycle finishes. If you open your dishwasher and find your dishes wet and cold, or notice more food particles stuck onto your dishes, then the heating element is likely faulty.
If there is visible damage to the heating element, such as corrosion, blistering, or cracks, this is a strong indicator that it has burned out and will need to be replaced. If there is no apparent damage, you can use a multimeter to test the heating element for continuity.
In order to remove the heating element for testing or to replace it, you will probably need to fully uninstall the dishwasher. While this process may vary depending on the model, you can use these steps as a general guide:
- Shut off the power supply to the dishwasher to prevent shock, as well as the water supply.
- Remove the screws or fasteners to detach the dishwasher’s lower access panel or panels.
- Use pliers to unthread the water supply line or elbow fitting from the water supply valve – be prepared for some water to spill out.
- Remove the junction box cover and separate the power wires by untwisting the wire nuts. Release the grounding wire as well.
- Unthread the dishwasher power cable strain relief nut so you can detach the cable from the junction box.
- Detach the dishwasher drain hose from the sink drain or garbage disposer.
- Reach under the dishwasher to disconnect the heating element wires.
- Unthread the nuts securing the heating element terminals to the base.
- Open the dishwasher door and remove the lower dish rack. You may need to remove the lower wash arm as well.
- Pull the heating element terminals out of the base and detach the element from any retaining clips.
- Install a new heating element, or replace the existing one, by securing it in the retaining clips as you insert the terminals through the holes in the base.
- Reposition the wash arm, if necessary, and replace the lower dish rack. Thread the nuts to secure the heating element terminals.
- Connect the wires to the terminals.
- Remove the weight and slide the dishwasher back into the cabinet. Adjust the legs if necessary.
- Rethread the screws to secure the mounting brackets to the cabinet, countertop, or floor.
- Reattach the drain hose to the sink drain or garbage disposer, making sure the hose is elevated above its connection point.
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Nuisance trips
In addition to the type of breaker and cycle, nuisance trips can also be caused by issues with the electrical wiring or components in your dishwasher. This could include faulty electrical connectors, which are a common point of failure, or damaged or severed cables. It's important to inspect the plug, cord, and outlet for any signs of melting, damage, or scorching. If the dishwasher is unplugged and the pump's electrical connectors are removed, you can then switch it back on to test if the pump needs replacing.
Water leakage or dampness within the internals of the dishwasher can also cause nuisance trips. Water and electricity do not mix, so if water is leaking onto electrical parts, it can cause the circuit breaker to trip. This can happen even if your dishwasher uses a hot water connection, as the heating element may be damaged or malfunctioning and using too much electricity, resulting in a tripped breaker.
Finally, a blocked filter or hose could be causing the dishwasher to trip the electrics. Regular dish soap residue can cause blockages, and if you notice suds in the water, this is a good indication of soap residue buildup.
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Frequently asked questions
There are several reasons why your dishwasher might be tripping your electrics. Firstly, check if there is a blockage in the filter or the hose. If the drain hose is not configured properly, it can cause the dishwasher to trip. Secondly, inspect the electrical components for any damage, including the plug, cord, and outlet. Look for any signs of melting, scorch marks, or damage. Finally, check for any water leakages within the internals of the machine, as water and electricity do not mix, and a leak can cause the circuit breaker to trip.
Before checking, make sure the circuit breaker is shut off for safety. Once done, inspect the plug, cord, and outlet for any signs of damage. You can also open the back of your dishwasher to inspect the electrical connectors of the power cord, as faults often occur here first.
If you find a blockage in the filter or hose, you can try to clear it, or if there is a check valve in the drain hose, remove it. If you find electrical damage, such as melted or damaged connectors, it is best to call a professional to repair or replace the affected parts.
