Hayward Pool Heater Service Light Lo Shelly Lighting

LO Water Pressure Switch, Vent Pressure Switch, or Temperature Limit Switch Fault PF Voltage polarity reversed, low voltage detected SB Keypad failure SF Temperature Sensor (thermistor) input failure 12 Diagnostic Codes Please contact a local authorized service center for service. go to: www.hayward.com and click on the "Dealer Locator". Stumbling upon a 'LO' code on your Hayward heater can be quite the head-scratcher. Don't worry, you're about to unravel the mystery behind this cryptic message. This code typically indicates a water temperature sensor error, but it can also be a sign of other underlying issues with your pool heater. In this article, you'll learn the steps to diagnose and fix the problem, ensuring your pool remains

Step 3: Ensure that the wire harness terminals on the water pressure switch are properly connected to the spade terminals. Step 4: Remove the wire leads from the water pressure switch and check for continuity across the switch while the pump is running. The LO code is not caused by a water pressure switch fault if it is closed. Reattach the wires to the water pressure switch.. Learn what to check and how to resolve issues when the 'LO' code is displayed on your heater.. Hayward Insights provides expert advice, tips, and industry updates to help pool owners and enthusiasts with their swimming pool experience. Gain insight. Support. Resources. Pool Financing;