Troubleshooting Guide: Pool Light Comes on Then Goes Off

The pool light turning on then off indicates an issue with the electrical circuit or bulb. Check the connections and replace the bulb if needed.

Having a well-lit pool is not only aesthetically pleasing but also essential for safety reasons. A pool light that comes on and goes off can be frustrating and indicate a potential problem. If you’re experiencing this issue, it’s crucial to address it promptly. In some cases, the issue may be a loose or damaged wire, while in other cases, it can be a faulty bulb. Occasionally, the problem may also lie with the wiring of the pool‘s control panel. In this article, we’ll explore some common reasons for a pool light to turn on and off and provide solutions to fix the issue.

Troubleshooting Guide: Pool Light Comes on Then Goes Off


Checking The Basics

Pool light coming on and then going off can be frustrating since it defeats the purpose of night swimming. However, checking the basics can help you diagnose the problem with your pool light. An overview of pool light components includes a light bulb, lens gasket, and fixture.

You can start the troubleshooting by examining these components for any visible damage. Additionally, you must make sure that the voltage and power supply are sufficient for the light to work. If there are no apparent troubles with these components, it may be time to hire an expert for further diagnosis.

Remember that routine maintenance can prevent most of these issues from happening in the first place.

Causes Of Pool Lights Turning Off

One of the most common issues pool owners face is the pool light turning on and then quickly turning off again. This problem can be caused by a number of factors, including damaged gaskets, loose connections, faulty wiring, burnt out bulbs, and system overloads.

Damaged gaskets, for example, can allow water to seep into the light fixture, causing it to short circuit and turn off. Loose connections and faulty wiring can cause a similar problem, as can burnt out bulbs. In some cases, the entire pool system may be overloaded, causing the pool light to shut off.

Fortunately, most of these issues can be easily fixed by a qualified pool technician.

Pool Light Trouble

Steps To Fix The Pool Light

To fix a pool light that comes on then goes off, gather the right tools and safety equipment first. Some tools you may need include screwdrivers, pliers, electrical tape, and a volt meter. Inspect the gasket for any damage and replace it if needed.

Tighten any loose connections and replace faulty wiring. Check the light bulb for damage or if it is burnt out and replace it if necessary. Reduce system overloads by not running too many appliances at once. By following these simple steps, you can easily fix your pool light and get back to enjoying your pool at night.

Prevention Tips

Regular maintenance is key to preventing your pool light from going on and off. To start, replace bulbs and gaskets regularly to prevent water from seeping in and causing short circuits. In addition, it’s important to have your pool inspected by a professional to ensure proper installation and wiring.

Avoiding diy repairs can also prevent electrical mishaps. By keeping up with routine maintenance, you can ensure your pool light stays on and illuminated for your enjoyment.

Frequently Asked Questions Of Pool Light Comes On Then Goes Off

Why Does My Pool Light Come On And Then Go Off Again?

The most common reason for this is a faulty bulb or wiring issue. Check the light and wiring for any visible damage.

Can I Fix My Pool Light By Myself?

It depends on the severity of the issue. If it’s just a loose connection, you can fix it yourself. For major issues, consult a professional.

What Are The Safety Precautions When Fixing A Pool Light?

Always turn off the power supply before attempting any repairs. Wear rubber gloves and ensure there’s no water around the light.

How Much Will A Professional Repair Cost Me?

It varies depending on the issue and your location. On average, repairing a pool light can cost between $100 to $500.

What Is The Lifespan Of A Pool Light Bulb?

Most pool light bulbs last between 2 to 5 years depending on usage and quality. Led bulbs tend to last longer than incandescent bulbs.


A pool light coming on and then going off can be a frustrating experience for pool owners. However, there are several reasons why this might happen. One of the most common reasons is a malfunctioning transformer, which can cause the light to flicker or turn off completely.

It could also be a result of a bad circuit board or a corroded wire connection. To prevent such issues, it’s important to regularly maintain and inspect your pool light system. Additionally, having a professional electrician check and repair any issues can save you time, money, and potential dangers.

With proper maintenance, your pool light can give you years of enjoyment while also providing safety for night swimming. Remember, if you’re not confident in your ability to troubleshoot the problem, contact a professional.

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