How to Replace Your Pool Timer

Written by Michael Dean
November 28, 2023

replacing a pool timer

Pool pump timers are an important piece of equipment that helps automate your pool system. Unfortunately, pool timers don’t last forever, and you may need to replace them every now and again. In this article, I will walk you through the best way to replace your pool timer and answer some frequently asked questions.

Main Takeaways

  • Pool timers make pool maintenance easier by allowing you to set up a time for the pool pump to turn on and off. This way, you can simply set and forget!
  • To make sure your pool timer lasts a long time, make sure to regularly check and clean it.
  • It’s time to replace your pool timer if there is an issue with the motor or the gears that causes the timer not to turn on and off at the set times.
  • Pool timers cost anywhere between $20 to $200 to replace, depending on the type of pool timer and whether or not you opt for professional installation.

Step-by-Step Process: How to Replace Your Broken Pool Timer

There are several things that go wrong with your pool timer that may cause it to need a replacement. The following steps will guide you on how to replace a broken pool timer like a pro in no time.

Step One: Switch the Power Off

Start by turning off the power to prevent any accidents or electrical shocks. Use a multimeter or voltmeter to ensure no electricity is running through the wires.

Step Two: Turn the Timer Off

Now direct your attention to the bottom of the timer and change the tab settings to “OFF.”

Step Three: Remove the Wiring From the Pool Timer

Remove all the lines and wiring from the old pool timer. Carefully unhook all the rear wires that connect the pool timer and the breaker, keeping tabs on what wire goes where.

Step Four: Remove the Timer Dial

Unscrew the screws holding the dial and remove the timer dial from the box. You should be able to push on the tab in the upper lefthand corner of the device, and the timer will pop out of the box.

Step Five: Screw in the New Timer in the Box

The new pool timer should easily snap into place when you line up the tab like you removed the old pool timer. Then tighten the screws on the new timer.

Step Six: Reattach the Wiring to the New Timer

Now, it is time to reattach the wiring to the new timer. You first want to ground the green wire by wrapping it around the grounding screw. Then, attach the load and line wires according to the instructions on the timer box. If you have appropriately kept track of where the wires went in the old timer, you should be able to reattach everything as before.

This step can be complicated if you have no previous electrical experience. So, if you have any concerns during this step, I recommend hiring a professional to do this part for you.

Step Seven: Duct Tape Any Exposed Copper

For your safety, it is a good idea to duct tape over any exposed wiring to prevent electrical shock once the power is back on.

Step Eight: Turn the Power On

Once the wiring is all connected, you can turn the power back on.

Step Nine: Check for Correct Voltage

Using your multimeter or voltmeter, ensure the correct voltage is running through the timer. For example, if you have a 120 V timer, ensure your multimeter or voltmeter shows 120 volts.

Step Ten: Set the Pool Timer and Test If It Is Running

If you have an analog pool timer, set the pool timer using the “on” and “off” trippers and check to see if the clock is running. If you have a digital one, set up the times you want your pool pump to run and turn off using your phone or the display on the timer. Check out my pool timer types article if you’re not sure which type you have.

How Long Does a Pool Timer Last?

Pool timers are essentially secured in a plastic or steel box. These sturdy boxes protect the pool timer from the elements and exposure to water. With the timer box adequately secured, your pool pump timer can last more than a decade.

However, this box can be a very welcoming abode to various critters like lizards, ants, bees, wasps, or even snakes! As a result, these creatures may end up electrocuting themselves and shorting out the pool timer.

To avoid such mishaps, I strongly recommend regularly checking and cleaning your pool timers.

How to Find Pool Timer Replacement Parts

In some cases, you may not need to replace your pool timer entirely. For example, you may only need to purchase some new timer trippers. If you just need a replacement part for your pool timer, generally, you should be able to find this information (such as the product number) on the instruction manual of your pool timer so that you can order directly from the manufacturer. Alternatively, you can contact the manufacturer for specific pool timer replacement parts.

Furthermore, here are some specific resources you can check out:



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Frequently Asked Questions

How do you know if your pool pump timer is broken?

It may be time for a replacement pool timer if your pool pump has trouble turning on and off at the set time. But first, check the trippers to ensure they are correctly screwed in. The fix is often as easy as tightening the screws on the trippers. But sometimes, the issue lies with the motor or gears of the timer itself. If this is the case, you may need to replace your timer entirely.

Why is your pool timer not working?

One of the most common reasons a pool timer stops working is that the timer’s motor is either old, worn out, or broken. This wear and tear can result from overheating the motor, water damage, or even loose wiring. Another reason your pool timer may not work is that it is simply past its prime. Pool timers can last over 10 years, depending on the model. So, if your timer is quite old, it may be time for a replacement.

Why should you replace your pool pump timer?

Pool pump timers are not necessary pieces of equipment for pool owners. But they will make your life much easier. If your pool pump timer is broken and you are deciding whether to replace it, consider how much time you save by not having to manually turn your pool pump on and off. These little devices make your life easier and save you money on your power bill in the long run.

How much does it cost to replace a pool timer?

A pool timer can be a relatively cheap piece of equipment that will save you money in the long run. On average, a pool timer will cost between $20 and $100. Most pool owners should be able to install the pool timer themselves to save money, but if you hire a professional, expect to shell out another $100 on installation.

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