Here is a Spa Tech and DIY Must Have for Testing Sensors
Tests All Sensors On:
LX-20, LX-25, LX-30, SUNDANCE 400, 600, 750, 800 and 850 Circuit Boards.
It is able to Simulate a Working Temp Sensor, Hi-Limit and Flo-Switch for All the Circuit Boards Noted Above. It can be Considered a Necessity for Techs who Work on Sundance Spas.