U-Line U-2224ZWC User Manual & Service Manual page 47

USER GUIDE
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •
!
CAUTION
Precautions must be taken while working with
live electrical equipment. Be sure to follow
proper safety procedures while performing tests
on live systems.
REED SWITCH
A reed switch is used to monitor door state. When the
door is closed magnetic force pulls the reed to its contact
and closes the circuit which turns the light and display off.
When the door is open the reed pulls away from the
contact and opens the circuit. If the door is left open for
longer than 5 minutes, the switch will trigger an error code
and set an audible warning.
Magnet Away From Switch
(Door Open)
(Switch Open)
Magnet Close To Switch
(Door Closed)
(Switch Closed)
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SERVICE
Troubleshooting - Extended 4