Jacuzzi Temperature Sensor for LED J-330, J-335, J-340, J-345




Temperature Sensor for Jacuzzi J-330, J-335, J-340 and J-345 built from 2002 to 2016

This Sensor

  • 6600-166 Temp Sensor with curled end connectors for LED Systems

LCD or LED: Which Do I Need?

  • LCD Systems use a 10 button topside control.
  • LED systems use either a 4, 5 or 6 button topside control and have a red temperature display.

Common Sensor Error Codes

  • "SN-2" refers to a non-functional temperature sensor.
  • "SN-1" refers to a non-functional Hi Limit sensor.
  • Three dashed lines ("watchdog") is almost always corrected by replacing the temperature sensor.
  • Rapidly changing temperature or wildly inaccurate displays are almost always fixed by replacing the temperature sensor.
  • The Hi Limit Sensor rarely needs replacement.

Click here for instructions on how to replace the temperature sensor in your spa


  • Model: 6600-166
  • Manufactured by: Jacuzzi Hot Tubs

Manufacturer Info