Flashing SnS,  Flashing Sn,  or  SENSOR SYNC SERVICE REQD  Message

There is a Verified "Sensors out of Sync" (SnS or Sn) with Each Other Condition.

The "SnS", "Sn", or "SENSOR SYNC" Fault has occurred for more than 1 hour, indicating one or both Sensors are several degrees off, and Spa Functions are Disabled.  The Sensors are Verified Out of Sync with Each Other, or Not Indicating Close to the Same Temperature at Both Sensors.

After the Problem has been Resolved, you Must Press Any Button to Reset and Restart Heater Start Up.  Test the Sensors, or Continue for a Detailed Test Procedure.