1983-1993 1994-2002 2002-Present Gatsby Spas Spa Siding

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Sensors for

2002-Present
 

>>Click for Sensor Test Help          >>Click for Sensor Install Help

LED or LCD?
If your topside control has little light legs that glow you have a LED.
If your topside control has little quartz legs with light grey background, you have a LCD.
 
Models with   "LED" Topsides Use These Components With "Curl Finger" Connections
Temp Sensor: LED and J-200 (Curled Finger Connections) 6600-166-24 $28.88
O-ring For Temp Sensors Above (Always Wise To Replace) 6540-228-24 $1.89
OH Sensor: LED Models (Curled End Connectors) 6600-144-24 $27.01
2 Pair White Connector For CURL End 6660-053-21-001 $2.25
   
 
Models with   "LCD" Topsides Use These Components With "Box End" Connections
Temp Sensor: LCD  Models  (BOX End Connectors) 6600-167-24 $29.50
O-ring For Temp Sensors Above (Always Wise To Replace) 6540-228-24 $1.89
OH Sensor: LCD Models (BOX End Connectors) 6600-168-24 $27.01
OH Sensor J-400 2006-09 90" Line 6600-110-24 $37.00
LCD Sensor Harnes For BOX End 6660-055-21-002 $7.80

 

 
 J-400 2010+ Sensors
Temp Sensor: DSMT Connector 6600--181 $37.80
OH/High Limit Sensor: DSMT Connector 6600-179 $23.10
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Sensor Education

Sensors: Spas uses TWO sensors. The Temperature and the Overheat or High Limit sensor. 

Sensors basically change resistance values as the water heats or cools. The change in resistance tells the board the temperature of the water and the heater. If the sensor itself gives faulty or no resistance values, the spa will not operate or operates wrong. The board is smart enough that it will typically tell you by sensor error messages if the values are out of range by giving you a sensor error code on the topside.

The Temperature sensor must either be IN the water or IN a housing that is in the water. Most common design is in the water, usually where the filter resides. This sensor tells the board actual temp. If the topside reading on the board is off, then its usually this sensor (could be the board). If the board sees the water get too hot, it will attempt to cool the spa or shut down completely.

The OH or High Limit sensor has one purpose in life. It sits next to the heater and watches the heater closely. If the heater starts to overheat, the board sees the temp on the OH sensor and will shut the spa down. So if you get an OH error, either the heater IS overheating OR the sensor has failed.

FYI: On most brand spas, the temperature sensor can cause a faulty failure code of ---. If you get this error code, the likely solution is a new temp sensor.

 
 
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