Figure 3. Enthalpy Sensor Temperature Control Points - Airxcel CEA1012A Installation & Operation Manual

Brand of Sensor Selection (W3 jumper)
Honeywell enthalpy and dry bulb sensors are currently the only brand of sensors used in the air conditioners.
Jumper W3 allows us to use alternative brands at a future date. On all current air conditioners, pins 1
& 2 are jumpered on W3. See item 4 in Figure 4.
ICE CEA/CGA1012–1060 Wall Mount AC I&O Manual
03/2021 Rev.1

Figure 3. Enthalpy Sensor Temperature Control Points

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