[Balboa M7 Help]

Heat LED is illuminated and solid.  The tub gets to 104 or thinks it’s at 104 and shuts off when really the tub water is only 94 degrees.

[Balboa M7 Help]

I have a 2006 Marquis Reward that is displaying the incorrect temperature and I am not sure how to proceed.  I heated the tub up to 102 degrees (reading on top display) and then tested the water with an external thermometer which gets a reading of about 92 - 95 degrees.  So the two are obviously not agreeing and you can tell the tub is not actually 102 degrees when you get into it.  Thinking one of the sensors was bad, I put the tub into test mode and tested each sensor individually.  Both sensors produced a reading of 102 degrees.  I then reached out to Marquis to see if I could calibrate this in anyway, but they said I could not calibrate the top display and would need to replace the whole PC board (roughly 700 dollars).  I obviously do not want to go this route and was wondering if you guys had any suggestions on what to do.  Should I replace both the sensors in the M7 and see if that corrects the problem?  Has anyone else had this issue?