Q: I went to turn on my pool heater, which is a Hayward model, but it flashes the LO code as seen in the image below. Can you help me fix this? According to the Hayward Heater Manuel: The Hayward heater LO code indicates a fault in the temperature limit switch, vent pressure switch, or … Read more
Q: I’m dealing with an AO code on my Hayward heater. Could you explain how the heater works and guide me through diagnosing and fixing this issue?– Alex Hall The Hayward Heater AO Code occurs when the blower vacuum switch does not close after the blower starts, when the blower switch opens unexpectedly during the … Read more
If you are dealing with a Sw Open message on your Raypak heater, I have a solution for you! Over my years of fixing Raypak heaters, the Sw is one of the more common issues I get calls on. A Raypak heater is typically equipped with a pressure switch that only allows the heater to … Read more
There’s nothing quite like enjoying a swim in a heated pool, but what happens when your pool heater suddenly stops working? One common issue that Raypak pool heater owners may encounter is the SPK code. This code can be alarming initially, but with the proper knowledge and troubleshooting steps, you can quickly get your pool … Read more
The HS code on your Hayward heater is a temperature-sensing error. The code helps you to be aware of any unusual temperature changes in your spa or pool water. The Hayward Heater HS code indicates that either your water temperature has exceeded a maximum of 104°F or the water temperature is changing at an unusual … Read more
An SF Hayward heater code is a sensor failure code that indicates problems with the sensor communicating with the control board. Typically, Your Hayward heater will have one main sensor with two thermistors inside. The two thermistors are for data reliability and help the system to easily throw out errors if the readings don’t match … Read more
The Hayward bD Code is a common error for the Hayward pool heaters. It indicates problems with the electrical control board (ECB). The control board oversees the operation of your heater, including monitoring temperature and safety features. In short, the Hayward Heater bD Code means there is a problem with the control board located on … Read more
The Hayward heater IF code, sometimes confused with the 1F code, is an ignition failure code designed to let you know that there is something wrong with the ignition system preventing your heater from starting. In short, the Hayward IF error code indicates problems with the ignition Control system, flame sensor, closed gas valve, reduced … Read more