Figure 7-4. Door Magnet (Reed Switch) - Perlick CR30R Series Service Manual

Column Refrigeration Service Manual
7.4.2 Troubleshooting
Ensure all connections are good and there is no
damage to the wires. Check resistance values
based on temperature, ensure that the probe is at
a stabilized temperature.
For the temperature and humidity sensors used
on the wine units and the tip-out bin of the
refrigerator, these are electronic devices. Ensure
that all connections are made. The dual zone wine
reserves have two separate sensors, one for each
compartment. The difference between the two is a
different internal address. Ensure which sensor is
being replaced as the sensors can't have the same
address as this will confuse the control board and
it will not know which sensor it is talking with.
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7.5 Door Switch
The door switch is a simple reed switch, located
at the top of the cabinet. The actuation magnet
should be located in the cutout on the door top
trim cover. Of the two mounting locations for
the magnet, it should always be located at the
mounting location furthest from the hinge. See
figure 7-4.

Figure 7-4. Door Magnet (Reed Switch)

7.5.1 Troubleshooting
Using a multimeter, check continuity of the reed
switch and ensure it opens and closes through
proximity of the magnet.
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