Jandy Aquapure error 188 and 170

[telston]

I have an error code 170 that indicates I have a low voltage. I can unplug the sensor and the error goes away but comes back once I reconnect. Everwhere I read they say it could be the sensor, but I would like to know how I can test it to be sure it's the sensor and not the board?

Any testing suggestions?

[PoolDoc]

This is the most extensive trouble shooting info I've found:
https://www.inyopools.com/manuals/16...rror-codes.pdf

And, from Jandy:
http://www.zodiacpoolsystems.com/~/m.../H0325600.ashx
http://www.zodiacpoolsystems.com/~/m...ABB0216B4.ashx
http://www.zodiacpoolsystems.com/~/m.../H0331400.ashx