May 5, 2016 - Hi, I have A0 error code I am trying to clear. Heater was starting intermittently with multiple restarts. Blower would come on but it would not ignite . Nov 25, 2009 - ao error on h series hayward heater - f95b947.jpg. Follow these . But on most the AO error code is :Blower vacuum switch open error If the . when the pump shuts down the heater will display a fault code of 'LO'. . http://www.hayward-pool.com/prd/In-Ground-Pool- . AO. Blower vacuum switch open error. If the blower prover switch does not close after the blower starts the control . Feb 15, 2007 - I just ran my heater a few days ago with no problem. today when I go to turn it on it says error, call for service. . Sharon, if you would let me/ us know the heater and what it's 'saying', there's a fair chance that we could save you a service call (however, if it's still . Hayward Heater H400FDN Error code AO. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS. 2 heater and to all metal parts of swimming pool or spa, and to all electrical . When clearing a diagnostic error code this way, it is normal for the heater to delay up to 5 seconds AO. Blower vacuum switch open error. If the blower prover switch does not close . Improper installation and/or operation can create carbon monoxide gas . USE ONLY HAYWARD GENUINE REPLACEMENT PARTS . The heater shall be installed in accordance with all local and state codes. AO. Blower vacuum switch open error. If the blower prover switch does not close after the blower starts the . FREE SHIPPING. Details Q&A: Ask a Question Q&A: See Answers(10) Customer Reviews(17) Documents(6) Parts(8) How To's(11). Part # UST1252. By A. O. . Jan 16, 2010 - Learn how to troubleshoot the AO Smith ProMax Water Heater. . Also be sure that the gas pressure is at the correct level, if it is too low it can . Nov 18, 1996 - to develop gas water heaters that resist igniting vapors from gasoline and Out of the total number of shipments, 129 violated CPSC's springtime health and safety fairs. . For a description of the sample design and calculation of the sampling error, . A. O. Smith Company Hayward Pool Products. Filter Tank O-Ring O-429 for Hayward DEX2400K FREE SHIPPING . Error icon. Mais de 10 disponíveis / 305 vendidos / Ver feedback. Insira a . Adicionar ao carrinho Hayward Pro-Grid DE Pool Filter Replacement Tank O-Ring Part Number nice item,perfect for my pool,nice seller, fair price, A+ super fast shippm.