WHAT IT DOES
:
Typically, when you power up the sensor the board looks at both Over Heat or
High Limit Sensor and the Temperature Sensor and compares them. It should
see no significant difference and the range should be within normal range. If it
see outside the tolerances, depending on which system you have, it will notify
you of the problem and fail to turn the spa on. If the temperatures are close, it
continues it’s self test.
To Replace:
Gatsby used 2 types of Temp Sensors. The most common is the “dry well”
sensor. The spa has a plastic assembly housing attached to the spa shell. The
sensor inserts into this housing and the sensor bulb never touches water.
The less common type is the “wet well” sensor. The tip of the sensor actually
touches the water. You can touch the stainless steel tip of the bulb from the
inside of the spa. Typically to remove you simply pull the sensor out and the seal
will break and the sensor comes out. If you have water in the spa, it will pour out.
You usually can switch with the new sensor fast enough to minimize water.
The Over Heat sensor clips on horizontal heater and on the vertical canister
heater has a clamp you loosen and remove the sensor.
Connection to the board:
The sensors use a crimp style connection directly to the board.
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