Questions & Answers for: hayward pool heater ao error

...AO defined as blower vaccum open Is this an easy fix that I as a non-professional can resolve on my own? This error code is displayed when I attempt to ignite the heater to warm up the Jacuzi. I just ...

Hayward H400 pool heater has an error of A0 that indicate a problem with the blower switch... is there a simple fix such as resetting the system to extinguish the error code? My heater worked ok , btu

AO error code I replaced the vent pressure switch on my customers H250IDL after a repeated AO error code. I went through the service/troubleshoot test modes and the blower seems OK although it does ...

...pool and heater to work again, with out spending alot of money again. This error is produced when the blower prover switch does not close after the blower starts, the control will stop the ignition ...

AO error code i replaced the blower for my H400 heater i try to heat the spa i hear 2 clicks, then get the AO error code. i can see the blower turning and feel the air exiting the exhaust but no flame

Hayward heaters My spa heater is showing ao error message and would not kick in to start heating help You didn't indicate exatctly which model you have. But on most the AO error code is :Blower vacuum

...to the owners manual is below, it references fault codes, etc.. Hope this helps. ...

...Hayward H250 that wont ignite. When I set mode to to pool the blower comes on but nothing kicks in. then i get an error code of AO. ErrorAO means BlowerVacuum Switch Open. If the blower prover switch ...

Hayward h400 pool heater blower not starting The heater was running yesterday when I heard what sounded like a loud bang or pop. I checked the heater and the display is showing an error code that ...

Hayward 400IDL pool heater and am getting Error Code AO. I have replaced the Vent Pressure Switch, Blower Vacuum Switch, Control Board, and checked the tubing. I still get an AO error code. I took the