hayward h100id

Hi all… So I’m new here but have read plenty of threads over past few years!! Having an issue I can’t seem to solve. First, I’m a remodel contractor by trade… but am NOT a pool professional. However, maintaining my own pool has been and is very easy for me. With that said, I have an older...

I picked up a Hayward H100ID Natural Gas heater and finally got around to hooking it up. It turns on and the exhaust fan spins, but no clicking from the ignitor or firing going on... slowly troubleshooting the connections, any recommendations on what to look at first? I've gone as far as...

Does not look like much corrosion or lime.