new 60 Series Service Manual.rev. 06.01.16.docx - 41 –
PROBE TEST PROCEDURE
Water Level Probes:
Water level probes can be tested at any temperature and are good if they exhibit continuity
(0 ohms resistance) along the length, between the probe wire and the connector at the controller.
It is advisable to flex the probe at the two connections, while testing for continuity, to eliminate the
possibility of an intermittent failure.
Evaporator Temperature and Ice Level Probes:
The evaporator temperature probe and the ice level probe are designed to have a nominal
resistance of 5650 ohms at 32° F (0°C). To test these probes they must be placed in ice water
32°F (0°C) for a minute and then checked for resistance while the tube is still in the ice water. A
probe is considered good if it exhibits a resistance value between 5400 and 5900 ohms at 32° F
(0°C). Probes with values outside this range should be replaced.
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