Hey guys, this season I've been getting an HL2 code on my Raypak 206a heater. I'm aware that this is because the outlet temperature is exceeding 135 degrees Fahrenheit. This happens regardless of the rpm that I set variable speed pump to. However I will note a high pitch squealing sound once the pump gets down around 1700rpms (only while the heater is running).
I read that the most probably causes aside from a defective HL2 switch (rare) are clogged burner tubes, damaged internal bypass assembly, or a defective unitherm governor. Replacing the governor looks pretty straight forward but replacing the bypass assembly and cleaning the burner tubes are probably outside my comfort zone.
Do you guys think the unitherm governor is most likely the culprit given the aforementioned symptoms or is there something more sinister at play here? Also, is there any way to test the bypass assembly without removing the header?
I will also note that this pool has a SWG and the pool chemistry is meticulously maintained.
Thanks for your time!
I read that the most probably causes aside from a defective HL2 switch (rare) are clogged burner tubes, damaged internal bypass assembly, or a defective unitherm governor. Replacing the governor looks pretty straight forward but replacing the bypass assembly and cleaning the burner tubes are probably outside my comfort zone.
Do you guys think the unitherm governor is most likely the culprit given the aforementioned symptoms or is there something more sinister at play here? Also, is there any way to test the bypass assembly without removing the header?
I will also note that this pool has a SWG and the pool chemistry is meticulously maintained.
Thanks for your time!