How to Fix Water SW Open on Pool Heater
Enjoying your pool on a chilly evening is a fantastic way to relax. However, when your pool heater experiences problems, it can put a damper on your plans. One common issue is a “Water SW Open” error message. This error indicates that there is a problem with the water flow switch, which is a safety feature that prevents the heater from operating without adequate water flow.
If you see a “Water SW Open” error on your pool heater, don’t panic! There are a few simple steps you can take to troubleshoot the problem and get your heater up and running again.
Water Flow Switch on Pool Heater
The water flow switch is a crucial safety device in your pool heater. It ensures that water is flowing through the heater before it turns on the burner. This prevents the heater from overheating and potentially causing a fire.
The water flow switch is typically located on the side of the heater. It is a small, round device with two wires connected to it. When water flows through the heater, it pushes against a diaphragm in the switch, which closes the contacts and allows the heater to turn on.
Troubleshooting Water SW Open Pool Heater Error
If you see a “Water SW Open” error on your pool heater, it means that the water flow switch is not detecting water flow. There are a few things that could cause this:
- Clogged filter: A clogged filter can restrict water flow to the heater, which can cause the water flow switch to open.
- Air in the system: Air in the system can also cause the water flow switch to open. This can happen if the heater has been recently serviced or if there has been a leak in the system.
- Faulty water flow switch: The water flow switch itself can also be faulty. This is a less common problem, but it is still possible.
Fixing Water SW Open Pool Heater Error
Once you have determined the cause of the “Water SW Open” error, you can take steps to fix it.
- Clean the filter: If the filter is clogged, clean it according to the manufacturer’s instructions.
- Purge the air from the system: If there is air in the system, you can purge it by opening the air bleed valve on the heater. This will allow the air to escape and the water to flow through the heater properly.
- Replace the water flow switch: If the water flow switch is faulty, you will need to replace it. This is a relatively simple process that can be done by most do-it-yourselfers.
Tips for Preventing Water SW Open Pool Heater Errors
There are a few things you can do to help prevent “Water SW Open” errors on your pool heater:
- Keep the filter clean: A clean filter will help ensure that water flows through the heater properly.
- Check the air bleed valve regularly: If you see air bubbles in the sight glass on the heater, open the air bleed valve to purge the air.
- Have the heater serviced regularly: A qualified pool technician can inspect the heater and make sure that all of the components are working properly.
Conclusion
If you see a “Water SW Open” error on your pool heater, don’t worry! This is a common problem that can be easily fixed. By following the steps outlined in this article, you can troubleshoot the error and get your heater up and running again in no time. Enjoy a warm, relaxing swim in your pool this summer!
Do you have any questions about fixing a “Water SW Open” error on a pool heater? Ask them in the comments below!
FAQs on Pool Heater Water SW Open
Q: What is a water flow switch?
A: A water flow switch is a safety device that prevents the pool heater from operating without adequate water flow. This prevents the heater from overheating and potentially causing a fire.
Q: What causes a “Water SW Open” error on a pool heater?
A: A “Water SW Open” error on a pool heater means that the water flow switch is not detecting water flow. This can be caused by a clogged filter, air in the system, or a faulty water flow switch.
Q: How do I fix a “Water SW Open” error on a pool heater?
A: To fix a “Water SW Open” error on a pool heater, you can clean the filter, purge the air from the system, or replace the water flow switch.
Q: How can I prevent “Water SW Open” errors on my pool heater?
A: You can help prevent “Water SW Open” errors on your pool heater by keeping the filter clean, checking the air bleed valve regularly, and having the heater serviced by a qualified pool technician.
