Hello, I was getting a Lo code on my heater and replaced a few parts and it went right away, it started up and then went right off, a few times and I received an IF code. I replace the igniter then I got the LO code back. The pool does seem like its not pumping as hard, but the pump seems to be working normally. I cleaned the filter and removed the piping to check for any debris and found nothing. The pump is probably 4 years old - could that be the issue? It's just not pumping as hard as it used to?