Evaporator Temperature Sensor / Switch: Testing and Inspection

A/C Thermostat Test:

Dip the thermostat capillary tube into a pan filled with ice water, and check for continuity.

Cut-off: 1.5 - O.5 °C (35 - 33°F)
Cut-in: 2.5 - 5.0 °C (37 - 41°F)

- If cut-off or cut-in temperature is too low or too high, replace the thermostat.
- The cut-off and cut-in of the thermostat must not be gradual, but sudden.