Liquid Level Sensor Checkout
52 RTHC-SVD01B-EN
11. Disconnect the sensor, and hook up a 1.5 Volt battery across
Stepper module terminals J7-2 (to battery +) and J7-3 (to battery -
). View the evaporator liquid level in the Refrigerant Report. The
liquid level should read -0.4 inches. Connect the battery to termi-
nals J7-1 (to battery +) and J7-2 (to battery -) The liquid level
should read 0.5 inches. If either of these readings is incorrect,
replace the RTHC Stepper module.
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