Hitachi FSXN1E Series, Installation And Operation Manual

Page: 82 / 756

• Check that the stop valves on the outdoor unit are fully open
(gas, low-pressure: only in heat recovery systems) and start
the system. (Where base units are combined, check that the
stop valves on all outdoor units connected are fully open).
• Carry out the test run on the indoor units in sequence, one
by one. Then check the concordance of the refrigerant pipe
system and the electrical wiring system. (System conformity
cannot be checked if there are several indoor units operating
at the same time.)
• Follow the procedure indicated below to carry out the test run.
Make sure the test run is completed problem-free.
N O T E
Where there are two remote controls (main and secondary), first
carry out the test run using the main remote control.
Press MODE and CHECK on the PC-ART remote control at the
same time for 3 seconds to enable TEST RUN mode. TEST RUN
will be displayed on the screen. The total number of indoor units
connected is indicated on the screen.
For other optional remote controls (wireless remote control or re
-
mote control), follow the instructions given in the Installation and
maintenance manual supplied with the optional remote control to
carry out the test run.
Where several indoor units are controlled simultaneously using
the same remote control, check that the number of indoor units
connected is indicated on the screen.
Where the number indicated is incorrect, the automatic self-di
-
recting function is not correctly performed because the wiring is
incorrect or there is electrical noise, etc. Switch off the power
supply and repair the wiring before checking the following points.
Do not switch on or off for the next 10 seconds.
-
The indoor unit power supply is not switched on or the
wiring is incorrect.
- Incorrect connection of the indoor units or of the commu -
nication cable.
- Incorrect setting of the RSW and DSW switches (can -
celled setting) on the indoor unit PCB.
Press MODE to set the operating mode.
Press RUN/STOP. The on/off light switches on before the test
begins. The 2-hour off timer will be automatically enabled. OFF
Timer and 2HR will be displayed on the screen. The initial air flow
setting is HI, although the setting can be changed.
• Check the working range: see in chapter
Working range
.
• Consider the following when the system is operating.
- Do not touch any of the parts in the discharge gas area,
as the compressor chamber and the pipes are at tempera -
tures of over 90 ºC.
- Do not press the magnetic breaker button. This could
cause a serious accident.
- Do not touch any of the electrical components for at least
3 minutes after the main switch has been switched off.
- Check that the settings of the refrigerant pipes and electri -
cal wiring are for the same system. To do so, switch on the
indoor units one by one.
Press AUTO LOUVER and check that the louver moves normally,
with no abnormal noise. Press AUTO LOUVER again to stop the
louver. If any abnormal noises are heard, remove the panel and
adjust the installation of the connection parts on the cover in the
corner of the panel. Make sure the panel is correctly fitted to the
unit to prevent it from being deformed.
The temperature control will not be valid even though the protec
-
tion device is enabled during the test run. If an alarm is triggered,
locate the cause of the problem in chapter Alarm codes . Once the
problem has been solved, restart the test run.
Check the temperature, pressure, operating frequency and num
-
bers of the indoor unit connected on the 7 segment display, ac -
cording to the “Checking the outdoor unit using the 7-segment
display in PCB1” label attached to the rear of the front cover on
the outdoor unit.
To complete the test run, wait for 2 hours or press the RUN/STOP
button again.
N O T E
• Make sure the electric components in the installation (earth leakage breaker, circuit breaker, cables, connectors and cable termi -
nals) have been selected correctly in line with the electrical data given in this Manual. Also make sure that these components are
compliant with national and local codes.
• Use shielded cables (> 0.75 mm
2
) for communication installation wiring to avoid electromagnetic noise. (Shielded cable must be
less than 1000 m in total length and its size must be compliant with local codes.)
• Check the connection of the power wiring terminals (terminals “L1” to “L1” and “N” to “N”). AC supply voltage 3N~ 400V 50Hz. If it
is different, some components could be damaged.
11.2 CARRY OUT THE TEST RUN
11.3 PC-ART REMOTE CONTROLLER
68 PMML0294A rev.2 - 07/2014
Test run
PMML0294A_rev.2_02-2014.indb 68 14/07/2014 12:28:39