Which port is the Hi-Limit Sensor on Jandy LXI Gas Heater?


Active member
Apr 16, 2015
"No need to mark this, I'll remember which is which.", I said before a myriad of distractions as I was taking the hi/lo sensors out for replacement.

Now, of course, :hammer: , I don't remember now which is Hi and which is Low. I *think* the port closest to the heater (the longer one if it matters) is High. Am I right?

If I get them reversed will a hole open in the space-time continuum and the zombie apocalypse will start? Or will the heater just not work and I can just swap them and try again?

Bill W


TFP Expert
LifeTime Supporter
Jun 7, 2011
Midland TX
If it starts rhe apocalypse, we are going to hunt you down first Bill. :lol:

Good luck on your issue. Hopefully a bump will get you an answer. :bump:


TFP Expert
In The Industry
Jul 6, 2011
They are both called high limit sensors and one is 20 degrees higher than the other. The one closer to the heater is the 130 degree sensor and the other is the 150 degree sensor from what I recall.

No, no hole will open in the space-time continuum. The zombie apocalypse has already started.