Hi, I have a Jandy LT 400N-L pool heater and it stopped working the other day.
The "pressure switch" red light was blinking, so I assumed the old pressure switch was bad (after removing it to make sure there was a steady stream of water coming from the copper tube - which there was) and replaced it (I actually forgot which wire went where - I figured the white wire went to the common connection on the switch, which I hope is right...).
Anyways, after connecting the new switch, it still didn't fire up and the red "pressure switch" light was still blinking.
I tried removing the white wire coming from the switch and jumped it over on the block (as shown in the first picture), and the blower fired up and then the heater came on.
I then removed the wire and put it back to the normal position on the block (as shown in the second picture), and everything shut down.
Anyone have any ideas what's up? Any feedback would be greatly appreciated!