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11-2. Before test run
After installation of indoor and outdoor units, and piping
and electric wiring work, re-check that the unit is free
from leaks of refrigerant, loosened connections, and
incorrect polarity.
Measure and impedance between the power supply ter-
minal block on the outdoor unit and the ground with a
500V Merger and check that it is equal to or greater than
1.0M
Ω
.
For the heater integrated units, make the similar mea-
surement on the heater power supply terminal block (L,
N, ).
(*) Never apply any voltage to the both terminal blocks
for the indoor and outdoor unit connection (S1, S2,
S3) and the remote controller (1,2).
For specific models requiring changing of settings for
higher ceilings or selection of power supply ON/OFF
capability, make proper changes referring to the descrip-
tion for Selection of Functions through Remote
Controller.
11-3. Test run procedures
(1) Indoor unit
Wired type
Operating procedures
1
Turn on the main power supply.
While the room temperature display on the remote controller
reads “H0”, the remote controller is disabled. Turn off the
“Ho” display before using the remote controller.
2
Press “TEST RUN” button twice.
A
the ‘TEST RUN’ indicator should light up.
3
Press button.
Cool in/drying mode: Cool air should start to blow.
Heating mode: Warm air should start to blow (after a while).
4
Press button.
Check for correct motion of auto-vanes.
5
Check the outdoor unit fan for correct running.
The outdoor unit features automatic capacity control to
provide optimum fan speeds. The fan keeps running at a
low speed to meet the current outside air condition unless
it exceeds its available maximum power. Then, in actuality,
the fan may stop or run in the reverse direction depending
on the outside air, which does not mean malfunction.
6
Press the “ON/OFF” button to reset the test run in
progress.
• The test run will be automatically shut down after two
hours in response to the AUTO STOP setting of two hours
on the timer.
• During the test run, the room temperature display shows
the indoor unit tubing temperatures.
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON
OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
3
A
6
2
4
• In the case of the test run, the OFF timer will activate, and the test run will automatically stop after two hours.
• The room temperature display section shows the pipe temperature for indoor units during the test run.
• Check that all the indoor units are running properly for simultaneous twin and triple operation.
Malfunctions may not be displayed even if the wiring is incorrect.
(*1)
After turning ON the power supply, the system will go into start up mode and “ H0” will be blinked on the operation lamp of the
remote controller (green) and the display section of the room temperature .
As to INDOOR BOARD LED , LED1 and LED2 will be lit up (In case the address is 0.) or turned off (In case the address is not
0.) and LED3 will be blinked.
As to OUTDOOR BOARD LED , LED1(green) and LED2(red) will be lit up.(After the startup mode of the system will be
finished ,LED2(red) will be turned off.)
In case OUTDOOR BOARD LED is the digital display, —
and — will be displayed alternately every second.
• If one of the above operations does not function correctly, the following causes should be considered, and if applicable, dealt
with. (The following symptoms have been determined under test run mode. Note that “start up” in the chart means the *1 dis-
play above.)
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