Test Operation Si39-303
90 General Information
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Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in
Accordance with Unified Master Outdoor Unit by Indoor Unit Remote Controller
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Install the outdoor unit external control adapter on either the outdoor-outdoor, indoor-
outdoor, or transmission line.
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Set outdoor unit PC board DS1-1 to “Indoor” (factory set).
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In setting mode 1, set the outdoor unit you want to give cool/heat selection permission to as
the group master, and set the other outdoor units as group slave units.
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Set the outdoor unit external control adapter SS1 to Unified (factory set) or Cool, and SS2 to
No (factory set).
Multi outdoor units connection
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