Panasonic U-4LE1E5 Service Manual page 53

3. Ordinary Display Controls and Functions
All units start/stop (Fig. 3-1)
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<Operation>
The (ON/OFF operation) button can be used to
start and stop all the indoor units.
• The LED illuminates if any indoor units is operating.
• The LED blinks if an alarm at any of the operating indoor
units occurs.
Cooling/heating change (Fig. 3-1)
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NOTE
Cooling and heating mode changes are only available when
all indoor units are stopped.
<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. 3-2)
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<Operation>
The (CHECK) button can be used to start and stop a
test run for all indoor units.
• Press and hold for 4 seconds to turn ON.
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.
Outdoor Unit Maintenance Remote Controller
LED
LED
3 - 5
Mini VRF SYSTEM
Fig. 3-1
Fig. 3-2
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