Normal Display Operations And Functions - Panasonic U-26PE1U6 Technical Data & Service Manual

5-3. Normal Display Operations and Functions

Normal display functions
• Connect the special service checker wiring to the outdoor unit PCB.
The connection is shown in the figure below.
Special service checker wiring
* It is not necessary to disconnect the communications line in the inter-unit control wiring if it has already been
connected at this time.
* Setting modes 1 and 2 can be used even when the outdoor unit is independent (when 1 maintenance remote
controller is connected to 1 outdoor unit and automatic address setting for the indoor units has not been com-
pleted).
* Displays the overall system status for that refrigerant system.
All units start/stop (Fig. 1)
<Operation>
The button can be used to start and stop all the indoor units.
• The LED turns ON when 1 or more indoor units is operating.
• The LED blinks when an alarm has occurred at 1 or more indoor units
during operation.
Switching between cooling/heating (Fig. 1)
<Operation>
The button switches between heating and cooling modes.
• The specifications are equivalent to the heating/cooling input that was
present on earlier outdoor unit PCBs.
• The display shows the operating mode of the indoor unit with the lowest
number.
All units test run (Fig. 2)
<Operation>
The button switches test run ON/OFF for all indoor units.
• Press and hold for 4 seconds to turn ON.
" TEST " is displayed while the test run is in progress.
• Conditions of test runs that are started from the unit remote controller are
not displayed on the outdoor unit maintenance remote controller.
5. Outdoor unit maintenance remote control
RC (3P, blue)
PCB connector
(3P, blue)
Relay connector (2P, white)
Remote controller Assy
5-3
Outdoor
unit PCB
Fig. 1
Fig.2
5