Hitachi RWM-(H)FSN3E, Service Manual

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8 Commissioning
SMGB0070 rev. 1 - 08/2011
219
8
8.4 Outdoor unit test run
The test run procedure from the outdoor unit side is shown below. You can set this DIP switch while the power source is
ON.

Setting of dip switch (before shipment)
DSW1
1 Cooling: Pin 1 ON
2 Heating: Pin 1, 2 ON
3 Cooling intermediate season: Pin 1, 3 ON
4 Heating intermediate season: Pin 1, 2, 3 ON
5 Manual compressor OFF: Pin 1~4 ON
C A U T I O N
• Do not touch any other electrical components while you are setting the switches on the PCB.
• Do not attach or detach the service access panel when the power source for the outdoor unit is ON and the
outdoor unit is operating.
• Set all the DIP switches of DSW1 to OFF after completing the test run.
Dip switch seting Operation Remarks
Test run
1. Setting operation mode
(a) Cooling:
Set DSW1-1 ON
(b) Heating
SET DSW1-1 and 2 ON
(c) Cooling intermediate
season:
Set DSW1-1 and 3 ON
(d) Heating intermediate
season:
Set DSW1-1, 2 and 3 ON
•
The indoor unit automa-
tically starts to operate
when the test run of the
outdoor unit is set.
•
You can perform the ON/
OFF operation from the
remote control switch or
the DSW1-1 of the outdoor
unit.
•
Continuous operation du-
ring 2 hours is performed
without the Thermo-OFF
condition.
•
Make sure that the indoor units start
to operate in accord with the test run
of the outdoor unit.
•
If you start the test run from the
outdoor unit and you stop the test
run from the remote control switch,
the test run function of the remote
control switch is cancelled. However,
the test run function of the outdoor
unit is not cancelled.
•
If the more than one indoor unit is
connected with one remote control
switch, all the units start the test run
at the same time. Therefore, turn
OFF the power source so that the
indoor units do not perform the test
run. If this is the case, the TEST
RUN indication of the remote con-
trol switch may flicker. This is not
abnormal.
•
The setting of DSW1 is not required
for the test run from the remote
control switch.
Manual
OFF of
compressor
2. Forced stoppage of
compressor:
Set DSW1-1 ON
•
When DSW1-4 is ON
during the compressor
operation, the compressor
stops operating immedia-
tely and the indoor unit is
under the Thermo-OFF
condition.
•
When DSW1-4 is OFF, the
compressor starts to ope-
rate after the cancellation
of the 3-minute guard.
•
Do not turn ON and OFF the com-
pressor frequently