Panasonic U-4LE1R8 Service Manual page 109

1. Outdoor Unit Maintenance Remote Controller
All units start/stop (Fig. 6-1)
<Operation>
The (ON/OFF operation) button can be
used to start and stop all indoor units.
• The LED illuminates if any indoor unit is operating.
• The LED blinks if an alarm occurs at any of the
operating indoor units.
Cooling/heating change (Fig. 6-1)
<Operation>
The (MODE) button can be used to change
between heating and cooling operation.
• The display indicates the operating mode of the
indoor unit with the lowest unit No.
All units test run (Fig. 6-2)
<Operation>
The (CHECK) button can be used to start and
stop a test run for all units.
• To start, press and hold the button for 4 seconds.
During the test run, "TEST" is displayed.
• The status of test runs performed from the indoor
unit remote controller is not displayed on the outdoor
unit maintenance remote controller.
LED LED
6-5
Mini VRF SYSTEM
Service Checker
Fig. 6-1
Fig. 6-2
6