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  • Writer's pictureSean Flanagan

Pool Chlorinator Not Working? Check These 5 Most Common Issues

Updated: Dec 14, 2021

The pool chlorinator is a device that burns out the chemical chlorine and turns it into a gas. This process is called oxidation, and it's what allows the chlorine to rapidly kill bacteria in your pool water. Pool owners are often faced with problems such as their chlorinator not working or being unable to find replacement parts for their model when they need them.

Does Your Pool System Need an Update? Contact Sea Breeze Pools Today for a FREE Quote!


There is much to know about pool chlorinators, but it's really not as complex as one might think. They're designed with a simple dial adjustment that can be rotated for the number of lbs you want in your chlorine stick or tablet equivalence. Most chlorinators can hold around 9 lbs. of chlorine, which typically lasts 2 weeks before needing more. There are plenty of possibilities on how many pounds per week are needed depending on your pool size - so experiment until you find what works best for your swimming needs! If you are not sure the proper amount of chlorine to use, consult a pool expert, like the ones at Sea Breeze Pools.

The pool season is in full swing, and many of you are enjoying the benefits of owning a pool. However, if your chlorinator isn't working, then it can spoil the fun quickly! Read on to learn some common problems that result in chlorinator issues for pool owners. Common Issues That Lead to Chlorinator Failure Here are some common causes of problems that occur with our chlorinators:

1. Dirty or clogged filters - This could be due to sand from the filter being washed into the pump basket instead of staying on top where it belongs. The filter should be cleaned regularly to prevent this from happening. 2. Water level too high - If water levels are set too high for an extended period of time, chlorine can evaporate and leave pools vulnerable to algae growth or other bacteria infestation that leads to a chemical imbalance. 3. Air Lock has occurred - it is possible for air to get stuck into your system, making it hard for your equipment to do its job properly. An airlock in your chlorinator can reduce both water flow and the overall effectiveness of your chlorination. 4.Chlorinator lid is leaking or stuck on - if you cannot open the top lid to your chlorinator, or if it is leaking, chances are that you have an o-ring or gasket issue. O-rings are known to become brittle over time, which is why it is important to regularly check them to see if they need lubrication. Simple silicon lubrication will do the trick most of the time, and if the o-ring is in rough shape, it's best to just replace it with a brand new one. 5. Chlorine tablets aren't dissolving completely - this is probably the most common issue pool owners face. If your chlorine tablets aren't dissolving completely, or are dissolving at a slower rate than expected, there could be a few possible reasons for this happening. First, you need to check and make sure that your chlorinator is installed properly. If not, that is probably the root of your problem. Another possibility is that your output dial is not set to 100%. If your dial is not set to 10, your pool system might think that it is using the maximum amount of chlorine available, when in fact it isn't. To increase the amount of chlorine that is entering your pool, make sure the dial is set at 10, or the maximum level available. Whether you’re a brand new or veteran pool owner, it can be difficult to know where your pool system is heading and how much care it needs. To help simplify the process for you, we are offering free inspections from our experts at Sea Breeze Pools. Contact us today so that we can answer any questions about your current water chemistry levels and chlorine levels in Central Florida pools. We want to make sure that your investment is staying healthy and providing quality service for years to come! Keep Your Pool In-Check This Summer Get a Free Pool Service Quote From Sea Breeze Pools!


Sea Breeze Pools services the following locations in Greater Central Florida: Apopka, Lake Mary, Metro West, Mt. Dora, Oakland, Orlando, Sorrento, Longwood, Ocoee, Windermere, and Winter Garden.

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