Spa throwing error code and shutting down

CGullo

0
Oct 13, 2017
3
Maple Shade, NJ
We have a 2003 Down East Cape Cod SE tub that we got for free on Craiglist. It's in excellent condition with a new cover.
We replaced the circuit board, heater coil, one sensor and the 2 copper heater straps about 2 weeks ago.
Everything was working great until earlier this week when the panel started flashing SnS and the temp.
We found a list of error codes for Master Spa tubs on another website that said this was probably temporary because the sensors were unbalanced and to turn the tub off, wait 30 seconds and turn it back on. It came back, started heating then totally quit, flashing a solid SnS. We had our local spa place come out to look at it. The technician replaced the other sensor but still can't get it to stop throwing the SnS code and shutting down. The technician seems to think it's shorting out but has no idea why.
Any ideas?
 
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