Question about Hayward H - Series 400 Heater Top for In - Ground Pools and Spas - Dhi400
Heater pump won't ignite green light comes on for few seconds and then goes off.
Check the water pressure if it is low it will not keep burning
Posted on Oct 05, 2014
If new and wired for 120 voltage reverse black and white wires if reversed they wont show rectafication if old heater replace or clean up flame sensor
Posted on Oct 04, 2014
I am sorry to report that this is a very common problem for this heater. Here is more information than you want: http://forum.doityourself.com/pools-spas-hot-tubs/345253-hayward-h100id-ignites-but-cools-quickly.html
Posted on Jun 09, 2009
sounds like a flame sensor.remove ignitor assembly and clean with fine emory cloth or steel wool.when properly cleaned it should feel smooth for entire length of sensor
Posted on Jun 21, 2009
This is a code for what is called a prover switch. What it is a circut for the air pressures. Depending on model you can have one or two of these. Their will always be one for the exaust perssure and this will often be the culpret. If the sensor is good a sooted exchanger, rat nests on the exchanger or in the exaust can cause this. If you have a second switch it will be for burner air pressure and you will look for the same problems only inside the burner cabnet. Good luck, I'm sorry I can't be more help. But at least you know to look to the vent system.
Posted on Dec 29, 2009
"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
AO will apply to your blower, blower tubing, or blower vacuum switch. You need to check these items.
Posted on May 20, 2010
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