Why is my electric pressure washer not starting?

If your electric pressure washer won’t start, there are a few common issues that could be causing the problem. Pressure washers are powerful outdoor cleaning tools when working properly, but can be frustrating when they fail to start up. In this article, we’ll walk through some troubleshooting tips to get your electric pressure washer running again.

Check the Power Connection

The first thing to check with any electric device that won’t turn on is the power connection. Make sure the pressure washer is plugged into a working GFCI outlet, extension cord, or power source. With an electric pressure washer, you’ll want to use a heavy duty extension cord of the appropriate length and gauge to deliver adequate power.

Examine the power cord connections to ensure they are not damaged or loose. Faulty power connections are one of the most common reasons an electric pressure washer won’t start. Make sure all connections are dry and secure.

If using an extension cord, try plugging the pressure washer directly into the outlet instead. this will indicate if the issue is with the outlet or extension cord. Always make sure to use an extension cord rated for outdoor use.

Check for any tripped breakers or GFCIs on the circuit you have the pressure washer plugged into. Reset them and test the outlet with another device to verify power is running properly to the outlet.

Inspect the Pressure Washer Switch

The next thing to check is the power switch on the electric pressure washer. The switch itself could be damaged or worn out over time. flip the switch on and off a few times, making sure it is not loose or failing to catch properly.

Also examine the switch wiring to make sure no connections are broken or loose. Faulty switch wiring can prevent the switch from delivering power to start the pressure washer. Test the switch with a multimeter if needed.

Check the Reset Button

Many electric pressure washers have a reset button that trips and prevents starting if the motor overheats. Locate the reset button on the washer (often near the power cord) and press it to see if that gets the motor running.

If the reset button continues to trip, it likely indicates an issue like low oil, seized pump components, or a faulty motor that is causing overheating. Those problems would need to be addressed before the pressure washer will start up again.

Inspect the Water Supply

Adequate water supply is crucial for pressure washer operation. Check that the water source is turned on and supplying water. For pressure washers using a garden hose connection, ensure the hose is not kinked or leaking.

Make sure any inlet screens or filters in the washer are clear of debris that could block water flow. Detach the hose to check water is flowing out the inlet connection while the supply is turned on.

Low flow can prevent a pressure washer motor from starting properly. Check the pump and hoses for any leaks or clogs that could affect water supply. The pressure washer may have an automatic low-water shutoff that prevents operation if water flow is too low.

Check the Pump/Motor

Issues with the pump or motor are another common cause of a pressure washer failing to start. The pump is responsible for pressurizing the water, and the motor drives the pump. If either is faulty, the washer won’t start.

Check the pump for any oil leaks, as low oil can cause seizing or motor failure. Remove the pump cover and check that the intake screen is clear and components are not corroded.

Examine the motor fan for debris, test the brushes, and check that any capacitors are working properly. Faulty motors or seized pump components will prevent the pressure washer starting up.

Replace the Thermal Relief Valve

Electric pressure washers have a thermal relief valve that releases water if internal temperatures get too high. A faulty relief valve can trip unnecessarily and cause no start situations.

Check the relief valve for any debris or corrosion. Verify it is closing properly and not leaking water. If faulty, replace the thermal relief valve to get the pressure washer starting again.

Reset the Unloader Valve

The unloader valve on an electric pressure washer releases water pressure when the trigger gun is closed. This allows the motor to start up without working against high pressure.

Sometimes the unloader valve can get stuck, preventing water pressure from releasing. This will cause an electric pressure washer not to start properly. Manually activating the unloader valve can reset its position.

Replace the Pressure Switch

Electric pressure washers use a pressure switch to detect water pressure and supply power to the motor. If this switch is faulty, it can prevent the motor from starting.

Test the pressure switch using a multimeter. If it is not properly opening and closing electrical contacts based on water pressure, the switch may need to be replaced.

Conclusion

An electric pressure washer failing to start is often due to common issues like power problems, low water supply, faulty switches, or motor components needing repair. Methodically checking each part of the startup sequence can help troubleshoot and diagnose the specific issue.

Make sure to address any electrical or water supply problems first. Inspect the condition of the pump and reset any tripped safety valves. If internal motor or pump components are faulty, proper repairs or part replacements will be needed to get the pressure washer starting reliably again.

Following basic troubleshooting steps can identify most electric pressure washer starting issues. If problems persist after checking all potential causes, you may need to enlist professional assistance to get your pressure washer running smoothly again.

Common Issue	Solution
No power at outlet	Check breakers, reset GFCI, use different outlet
Faulty power cord	Inspect for cuts or loose connections, replace cord
Damaged power switch	Test switch function, replace switch
Tripped reset button	Allow to cool, press reset
Low water flow	Check hose and inlet filter for clogs
Stuck unloader valve	Manually activate valve to reset
Faulty pump/motor	Inspect pump oil, test motor windings

Step-by-Step Troubleshooting Guide

Follow these steps to diagnose electric pressure washer starting issues:

1. Check that the unit is plugged into a working GFCI outlet with the proper wattage rating
2. Verify the outlet has power and press the reset button if tripped
3. Examine the power cord and connections for any damage
4. Make sure water supply is turned on and hose is not kinked
5. Check that inlet screen and filters are clear of debris
6. Test operation of the power switch and any reset buttons
7. Inspect pump oil level and condition
8. Check for loose wiring connections
9. Clear any clogs or stuck components in pump
10. Replace any leaking hoses or faulty valves

By methodically testing each part of the pressure washer start up sequence, you can isolate the specific issue. Compare to models in good working order if needed to identify any faulty parts. In some cases, professional service may be required to replace worn out motors or pumps and get the unit starting reliably again.

Preventative Maintenance

Regular preventative maintenance can prevent many electric pressure washer starting problems:

• Check/replace pump oil and filters
• Use pump saver when storing
• Inspect water inlet screen
• Check belt tension
• Test/reset pressure relief valves
• Clear any obstructions in hoses
• Clean debris from nozzles

Properly storing the pressure washer for the winter and maintaining oil levels will help prevent seizing issues. Checking valves, nozzles, and the inlet screen will reduce problems with water supply. Keeping all internal components clean can prevent clogs.

When to Call a Professional

Seeking professional service may be needed if:

• Internal pump components are seized
• Motor windings are burnt out
• Electrical components are damaged
• There are significant oil or water leaks
• Pump pressure cannot be achieved after all DIY fixes

With proper use and maintenance, most electric pressure washers can provide years of reliable service. But eventually internal parts may require professional service when they fail or become damaged. Most electric pressure washer issues can be resolved with routine troubleshooting, part replacement, and preventative maintenance.

Frequently Asked Questions

Why does my electric pressure washer have power but won’t start?

If an electric pressure washer has power but won’t start, common causes include a seized or faulty pump, damaged motor, malfunctioning switch, tripped thermal relief valve, or stuck unloader valve.

Why does my pressure washer keep tripping the GFCI outlet?

A pressure washer that trips a GFCI outlet could indicate an electrical short, damaged power cord, malfunctioning motor, or water leaking onto electrical components.

What should I check if my pressure washer has no water flow?

For no water flow, check the water supply, inlet hose and filter for clogs or kinks, outlet valves, and pump/hoses for leaks that could affect water pressure.

Why does my pressure washer surge and not run steadily?

Surging issues are typically caused by problems with water supply, a worn pump, malfunctioning unloader valve, or inaccurate pressure switch settings.

How can I get my pressure washer pump unstuck after storage?

To unstick a seized pump, remove spark plug wire, add penetrating oil to the inlet, let soak overnight, then try turning the motor pulley by hand. Gently tap pump with rubber mallet or small block of wood if needed.

Why does my pressure washer keep shutting off while in use?

Frequent shut offs during use can be caused by overheating issues, low pump oil, excessive power cord length, a faulty GFCI outlet, or a tripped thermal relief valve.

Electric Pressure Washer Troubleshooting Tips

Here are some additional troubleshooting tips for an electric pressure washer that won’t start:

• Check battery connection if equipped with electric start
• Examine belt for damage if belt driven
• Test outlet GFCI with another appliance
• Try alternative extension cord or outlet
• Listen for humming noise indicating seized pump
• Clear nozzle of any obstructions
• Make sure lance is in high pressure position
• Spray lubricant on stuck pump seals
• Remove covers and check for loose wiring
• Compare electrical readings to manufacturer specs

Checking these additional items can help isolate the cause when an electric pressure washer fails to start. Test components before replacement to confirm issues. Writing down any error codes flashing can also help diagnose problems.

Safety Tips

When troubleshooting an electric pressure washer, keep these safety tips in mind:

• Disconnect from power source before service
• Allow components to fully dry if wet before reconnecting to power
• Release all water pressure before servicing
• Wear eye protection when testing for leaks
• Verify grounding connections are secure
• Use extreme caution near pressurized components
• Follow lockout/tagout procedures
• Consult manufacturer instructions for all testing and repairs

Electric motors and pressurized water can be hazardous if proper precautions are not taken. Be sure to discharge capacitors and consult manufacturer instructions before attempting pressure washer repairs. Stay safe while troubleshooting and fixing your electric pressure washer issues.

Conclusion

With some basic troubleshooting techniques, most electric pressure washer starting problems can be quickly resolved. Begin by verifying the electrical connections and water supply. Inspect the condition of switches, valves, and filters. Check the pump oil level and for any loose wiring.

Compare your pressure washer to the manufacturer instructions to isolate faulty parts. Replace damaged switches, hoses, valves, motors or pumps as needed. Seek professional service for significant issues with internal components or electronics.

Prevent future starting problems with proper maintenance and storage, especially for the pump and motor. Electric pressure washers require more care than gas models, but can provide years of reliable cleaning power with routine service and quick fixes to common starting issues.