Hayward H100ID making popping backfire noise

[Pickle0371]

Evening all.

New to the site. Had a AG pool for the last 8 years. This year I bought a second hand H100ID. Set up really easy. New 3/4 has line. Worked great for the first 3 days. Now when I turn on the heater it backfires or pops about 60-90 seconds. I can also smell some gas. I have called around to Hayward tech line. Not much help. I went and had a chat with a pool company. They too were unsure. Little concerned to run it especially with the smell of gas. Anybody have any suggestions on how to fix. Thanks

 

[danpik]

Sounds like it is tome for a complete disassemble and clean. Moving it probably knocked a bunch of rust loose and it is clogging up the burners. Does it run OK after the 60-90 second time frame?

I will also be surprised if the safety circuit is intact when you take the top off of it.

 

[Pickle0371]

Had a pool tech by today and he said it's not getting enough gas. I can't see it but gas fitter is coming Tuesday to put a meter on the line. I will confirm that first and then look to take it apart. I find it hard to believe that it's not getting enough fuel. It appears to be not burning it

Thanks

 

[danpik]

That is possible. See what his water column measurement is. It could be too low. I run mine at full 100,000 BTU input on a 1/2" OD line running about 25'