marcshaines Posted February 19, 2018 Report Share Posted February 19, 2018 (edited) DUMB QUESTION: I REPLACED MY HEATER ELEMENT ON MY 110V PLUG AND PLAY SPA; DOES IT MATTER WHICH SENSOR (A OR GOES WHERE ON THE TUBE? WHICH SENSOR IS CLOSEST TO THE HEATER COIL POSTS/COPPER CONTACTS (ELECTRICAL) AND WHICH IS THE FURTHEST? DOES IT MAKE A DIFFERENCE? THX Edited February 19, 2018 by marcshaines Quote Link to comment Share on other sites More sharing options...
Jersey Hot Tub Repair Posted February 22, 2018 Report Share Posted February 22, 2018 It doesn't make a difference. The spa monitors both sensors and expects them to have identical values. I usually put the left circuit board connection to the left sensor and right to right. Dave Quote Link to comment Share on other sites More sharing options...
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