Johnson Controls HIDH018B21S - Page 328

CONTROL SYSTEM
6-12
TC-15001-rev.3
C. When simultaneously controlling multiple indoor units, set the system numbers and addresses of the
indoor units without overlapping.
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between the controller and indoor units for setting the system number and the indoor unit address.
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a gap, cover the gap with vinyl tape.
If not covered correctly, water droplets or insects may cause a malfunction.
F. When operating with two controllers (primary and secondary), set the primary and secondary
controllers by selecting the appropriate function with the controllers. After setting it, turn OFF the
power supply of all the indoor units connected to the controllers.