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I've tried switching the two and using two sensors from an l spa pack that I had to replace a few years ago. That spa pack had a bad heater relay and I'm quite sure the sensors were okay. I've tried...

The dilemma I'm having is that the pumps have never come on since originally getting the OHH error. I thought there was good flow out of the jets before it went out. The spa was working one day, then...

If a sensor only was the problem, would the spa go through the start-up cycle, then give either a sensor error (sna or snb) rather than not even start up at all?

Is the high limit sensor that you refer to the same the sensor that are referred to as sensor A and sensor B? Is your reasoning to try a brand new one since the ones I did try were out of a spa pack...

Thanks for the quick reply Mary.
I can't say for sure that flow and heater were okay just before it went out as one day it was working fine, then the next day when I removed the cover, the spa was...

First time poster here and I hope I'm posting this in the correct category.
Hoping that someone here can provide some info. I have a 2004 Master Spa / Down East / Exeter SE with a 3 pump system. An...