Panasonic Urban Multi MX1R Series, Service Manual, Page: 487 / 643

Test Operation PACD011001C2
466 Test Operation UM Combination “MA1R Series” Using R-407C
1.5.3 Setting of Cool / Heat by Outdoor Unit System Group in Accordance with Group Master
Outdoor Unit by Indoor Unit Remote Controller
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Install the BMS interface adaptor for outdoor unit on either the outdoor - outdoor, indoor - outdoor, or
indoor - indoor transmission line.
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Set SS1 of the outdoor unit PCB to “IN / D UNIT” (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.
„
Set SS1 of the BMS interface adaptor for outdoor unit to “BOTH” (factory set) or “C / H.” Set SS2 to
“OFF” (factory set).
1.5.4 Setting of Cool / Heat by Outdoor Unit System Group in Accordance with Group Master
Outdoor Unit by Cool/Heat Selector
„
In addition to 1.5.3, change the following:
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Install a cool / heat selector to the group master outdoor unit.
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Set SS1 of the group master outdoor unit’s PCB to “OUT / D UNIT.”