Heater does not shut off normally

[dwise100]

Moved from here.

Problem resolved -- turns out that when the replacement board was installed, the 2-speed motor was wired backwards with hi-speed and low-speed reversed. This caused the high-speed to run whenever the low-speed was supposed to be on, and this caused the water to continue to heat even *without* the heater being on because the high-speed mode heats the water as the pump gets so hot on high-speed.

Thanks to Tom at spadepot.com for figuring this out for me! LOL. As it turned out, the next day I found the original owners documentation. There was an insert page warning the user not to run the high-speed excessively as this would heat the water!

As instructed, I simply switched the wire spades on the 2-speed main pump itself and everything has settled nicely.

I'm having the same issue and may have reversed the high and low speed wires on the new 4 HP pump I installed. So just reversing the speed 1 and 2 solved your issue?

 

[Texas Splash]

DW, I know it's been a while since you posted, but since there have been no replies from other forum members I figured I'd check to see if you were still having issues. Let us know if you still need help.