Question about Hayward H Series Pool & Spa Heater 400k Btu Propane Gas Milivolt Ignition H400p1

1 Answer

Ao error on h series hayward heater - Hayward H Series Pool & Spa Heater 400k Btu Propane Gas Milivolt Ignition H400p1

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John Prohaska

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  • Hayward Master
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ao error on h series hayward heater - f95b947.jpg
Follow these steps.

Posted on Dec 01, 2009

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5 Related Answers

Kurt Braun

  • 7 Answers

SOURCE: Pool Heater will not light. (Flashes AO)

Mine had this problem, removed the blower and manually rotated the shaft. It was stuck, but once freed it runs fine.

Posted on Jun 11, 2011

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Anonymous

  • 64 Answers

SOURCE: H Series Pool & Spa Heater 400k Btu Propane Gas Milivolt Ignition H400p1: how do i fix the AO code on my hayward heater?...

AO will apply to your blower, blower tubing, or blower vacuum switch. You need to check these items.

Posted on May 20, 2010

Anonymous

  • 760 Answers

SOURCE: ao error message in Hayward heaters

You didn't indicate exatctly which model you have. But on most the AO error code is :Blower vacuum switch
open error If the blower prover switch does not close after the blower starts the control will
stop the ignition trial go into lockout. The blower will continue to run. Automatic reset is immediate after the switch closes.Check to be sure combustion blower starts
If you don't have your manual you can download one for your exact model at : www.haywardnet.com

Posted on Jul 29, 2010

john224

John Prohaska

  • 1378 Answers

SOURCE: Hayward Heater Problem ''AO'' error. H400IDH

Thank you for posting your question here on Fixya.com.

It sounds as if the air activated switch the tube you mention attaches to is not working. Pull the two wires from it and connect them to simulate the switch closing. Start up the heater to see if you get ignition. If so, replace the switch.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

John

Posted on Feb 14, 2010

adamh294

adam hudson

  • 310 Answers

SOURCE: Hayward GAS HEATER KEEPS GIVING ERROR AO blower

This means that either the switch is bad, the wiring is corroded, the fan is not working, or the air switch tubing is broken or cracked. Follow the air switch tubing all the way to the end, remove it and check for cracks. This is the most common. Also check wiring connections for breaks, or corrosion.
If all looks well, replace the air switch.
Also, before any of this, make sure the fan is coming on at start-up.

Posted on Jan 16, 2011

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1 Answer

Brand new just installed with gas hooked up ao error message tube okay and blower working - ao message after about 1 minute after turning on


I recommendyou call the Hayward technical support at 908-355-7995and they might be able to help you figure this issue out. Ihope this helps.

Sep 17, 2011 | Hayward H Series Pool & Spa Heater 400k...

2 Answers

Ao error message in Hayward heaters


You didn't indicate exatctly which model you have. But on most the AO error code is :Blower vacuum switch
open error If the blower prover switch does not close after the blower starts the control will
stop the ignition trial go into lockout. The blower will continue to run. Automatic reset is immediate after the switch closes.Check to be sure combustion blower starts
If you don't have your manual you can download one for your exact model at : www.haywardnet.com

Jul 29, 2010 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

Error AO ON MY HAYWORD H SERIES POOL HEATER


The AO mindicates an open prover switch ,, here from Hawward site .
If the blower prover switch opens unexpectedly during operation the control will
shut down and attempt to re-light. If the switch does not close after the blower
starts the control will go into lockout with the blower running. Automatic reset is
immediate after error is corrected.

If the blower prover switch does not close after the blower starts the control will
stop the ignition trial go into lockout. The blower will continue to run. Automatic
reset is immediate after the switch closes.

May 08, 2010 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

I had code AO displayed on my hayward H250IDE. I


Check your wiring again on all the safety devices - Water pressure switch and both Hi- limits in the header.

Feb 19, 2010 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

Hayward Heater Problem ''AO'' error. H400IDH


Thank you for posting your question here on Fixya.com.

It sounds as if the air activated switch the tube you mention attaches to is not working. Pull the two wires from it and connect them to simulate the switch closing. Start up the heater to see if you get ignition. If so, replace the switch.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

John

Feb 14, 2010 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

AO error


This error is produced when the blower prover switch does not close after the blower starts, the control will stop the ignition and go into lockout. Automatic reset is immediate after the blower prover switch closes.

If you keep having this problem, contact a reputable service company, especially if it's under warranty.

The link to the owners manual is below, it references fault codes, etc..

Hope this helps.

http://74.125.95.132/search?q=cache:4mAdY7bLfoQJ:www.haywardnet.com/products/Manuals/pdfs/Manual227.pdf+hayward+AO+error&cd=7&hl=en&ct=clnk&gl=us

Sep 16, 2009 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

Pool heater will not ignite


My heater worked ok , btu made a clicking sound, now it shows a AO error? What can I do I dont have enough money to call a pool man again.

Jul 03, 2009 | Hayward H Series Pool & Spa Heater 400k...

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