WebMar 24, 2024 · Essentially, AO is an error code displayed by Hayward pool heaters when there’s an issue with the blower vacuum switch. This switch monitors the air pressure inside the heater and ensures the blower is functioning correctly. If something’s amiss, the AO Code alerts you to take action. What Can Cause an AO Code? WebBelow is a list of all Diagnostic Codes for the UHS Heater. Diagnostic Code Description AC Blower Vacuum Switch closed AO Blower Vacuum Switch open BD Bad board or …
Hayward Pool Heat Pumps Troubleshooting Guide
WebMay 25, 2024 · The AO code is the exact opposite of the Hayward pool heater AC code. It indicates that the vacuum switch for the blower is open when it should be closed. In case … WebOct 8, 2014 · 1. I turn on the heater and bump the thermostat up high enough for it to start heating. 2. The blower starts for about 3-5 seconds 3. The display panel shows "IO" and the blower runs for another 10 or so seconds 4. The blower turns … gas price offers
Hayward Pool Heaters Error Codes - YouTube
Web15 rows · May 11, 2024 · Hayward Pool Heater Error Codes [14 Easy Fixes] There are quite a few Hayward pool ... WebThe error code 111 is shown on the control panel's display or temperature controller. The unit will try to light the gas burner three times, and if it fails, it will turn it off. Here is the … WebMay 10, 2024 · The AO error code represents that the blower vacuum switch is open. Here are the common reasons behind this AO error code: Loose or broken wiring. The wrong voltage at the voltage selector … gas price one year ago