Ordinary Display Controls And Functions - Panasonic U-72MF1U9 Service Manual

1. Outdoor Unit Maintenance Remote Controller
■ Temperature monitor
Displays the temperature from each indoor/outdoor sensor.
■ Outdoor unit alarm history monitor
Displays the outdoor unit alarm history.
■ Setting the outdoor unit EEPROM data
Settings mode 1 and settings mode 2 can be used to make outdoor unit EEPROM data settings.

1-3. Ordinary Display Controls and Functions

■ Functions on the ordinary display
Connect the special service checker wiring to the outdoor unit PCB.
The connection diagram is shown below.
(Wire K : 623 178 5082)
Special service checker wiring
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.
RC (3P, blue)
PCB connector (3P, blue)
Relay connector (2P, white)
Outdoor unit maintenance remote controller
●
Outdoor unit PCB
●
●
LED
6 - 3
Service Checker
If the inter-unit control wiring
is connected, it can be left
as-is.
In the case of an independent
outdoor unit (1 maintenance
remote controller connected
to 1 outdoor unit, automatic
address setting for indoor
units not completed), both
setting mode 1 and setting
mode 2 can be used for
outdoor unit EEPROM data
settings.
The overall system status for
that refrigerant system is
displayed.
Fig. 6-1
Fig. 6-2
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5
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