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

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My Hayward H400IDL heater will not stay lit. When I try to start the heater runs and ignites for a few seconds but when the blower tries to kick in it flames out. The manual says the heater should try 3 times to ignite which it does most times and then throws an if code ( Ignition Failure ). Other times it just continues to cycle without throwing a code but still does not light. I have checked all electricl connections and made sure gas is on. Any suggestions as I know it has to be something simple. Ran great last 2 years although I did have to replace ignitor this year as it was cracked.

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Posted on Jan 02, 2017

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  • 61 Answers

SOURCE: Hayward Spa Heater ignites for 2 seconds and shuts off.

Sounds like this is a flame sensor issue. It is not detecting the flame.

Posted on Apr 04, 2009

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  • 61 Answers

SOURCE: My Hayward electric spa heater 11KW is coming on

Chances are that your element is drawing too much current. Check the manufacturer's website to make sure that you have the correct size breaker installed. Low water flow could also affect this, so make sure all of your baskets and filters are clean and clear.

Posted on Apr 05, 2009

  • 8 Answers

SOURCE: I just installed a new Hayward H400FDN and it will not stay lit.

I had the same issue...you don't have enough gas pressure.

Posted on May 12, 2009

john224
  • 1378 Answers

SOURCE: hayward h100id1 above ground pool heater has

Contact Hayward for a local warranty repair center since it is still under manufacturers warranty. http://www.haywardnet.com/locator/ Be sure to change the reason for search to repair/service.

Posted on Jun 12, 2009

thepool
  • 78 Answers

SOURCE: Hayward H400 Pool heater will not stay lit

"IF" - Hayward Pool Heater Fails to Ignite: the most common reason for this problem is insufficient gas supply. The Hayward heater LED display will show a diagnostic fault code of "IF" which stands for Ignition Failure. Undetected gas pressure problems if not investigated properly may result in unnecessary replacement and servicing of your Hayward Pool Heater.

Posted on Apr 23, 2010

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