Another Pool Heater Hayward h400idl - IF ignition failure error

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So I had pro come out.
Replaced ignitor. Did not work.
Rechecked all pressure with house hvac running and all gas components working as expected. Pro was in contact with Hayward to diagnose. All typical wear parts were working as expected. Heat exchanger, flame sensor, burners, regulators, ignitor, fuses, etc. But still no go.

Hayward said issue is “timing”. The ignitor would not light hot enough at the right time to start the burners.

Issue they believe was in the control board. So Pro ordered a new one and pro installed. Same exact thing happened - no light. Another pro came with him and they took a part everything again. Hayward claims the only plausible issue is the board again and suggests new board is defective. Warrantied that part and new part is on the way. More to come when I have updates.
 
If the ignitor is working properly and the gas pressure at the manifold is correct you are left with few choices for the problem. Ignition occurs between the ignitor and the burners. Any obstruction to the path/flow of gas through the manifold orifices and burners can cause an ignition failure. You mentioned that you cleaned the orifices and burners with a pipe cleaner. The manifold orifices can be cleaned with a pipe cleaner, but the burners need to be removed and the inside of the burners cleaned with a burner brush and the slots of the burners cleaned with a wire brush and then blown out with compressed air or CO2. You might suggest this if they haven't done it already.
 
swamprat69 said:
If the ignitor is working properly and the gas pressure at the manifold is correct you are left with few choices for the problem. Ignition occurs between the ignitor and the burners. Any obstruction to the path/flow of gas through the manifold orifices and burners can cause an ignition failure. You mentioned that you cleaned the orifices and burners with a pipe cleaner. The manifold orifices can be cleaned with a pipe cleaner, but the burners need to be removed and the inside of the burners cleaned with a burner brush and the slots of the burners cleaned with a wire brush and then blown out with compressed air or CO2. You might suggest this if they haven't done it already.
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will definitely will bring that up when they return. Thanks for the advice. Any and all is welcome.
Btw from LV - Raider Nation.
 
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