Hitachi SET FREE MINI RAS-3 Manuel D'installation page 35

16.2. TEST RUN FROM OUTDOOR UNIT SIDE
The procedure of test run from outdoor unit side is
indicated below. Setting of this DIP switch is available with
the power source ON.
Setting of Dip Switch (Before Shipment)
DSW1
Switch for Setting of Service Operation and Function
1. Test Run
2. COOL/HEAT Setting
ON
(ON: Heating Operation)
3. OFF (Fixed)
1 2 3 4
4. Manual Compressor OFF
Dip Switch Setting
Test Run
 Setting of Operation Mode
Cooling: Set DSW1-4 OFF.
ON
1 2 3 4
Heating: Set DSW1-2 ON.
ON
1 2 3 4
 Starting Test Run
Set DSW1-1 ON and the operation is
started after a few ~20 seconds.
When heating operation, leave
DSW1-2 at ON
↓
ON
1 2 3 4
Manual OFF  Setting
of
-Compressor Manual OFF:
Compressor
Set DSW1-4 ON.
ON
1 2 3 4
-Compressor ON:
Set DSW1-4 OFF.
ON
1 2 3 4
Manual
 Manual Defrost Operation Starts
Defrost Press PSW1 for more than 3
seconds during heating operation,
the defrost operation is started after 2
minutes.This function is not available
within 5 minutes after starting heating
operation
 Manual Defrost Operation Finishes
Defrost operation is automatically
ended and the heating operation is
started.
WARNING:
Do not touch any other electrical parts when operating
switches on the PCB.
Do not attach or detach service cover when the power
source for the outdoor unit is ON and the outdoor unit
is operated.
Turn all DIP switches of DSW1 OFF when the test run
operation is completed.
Operation
 The indoor unit automatically start to
operate when the test run of the
outdoor unit is set.
 The ON/OFF operation can be
performed from the remote control
switch or DSW1-1 of the outdoor
unit.
 Continuous operation during 2 hours
is performed without Thermo-OFF.
 When DSW1-4 is ON during
compressor operation, the
compressor stops to operate
immediately and the indoor unit is
under the condition of Thermo-OFF.
 When DSW1-4 is OFF, the
compressor starts to operate after
the cancellation of 3-minutes guard.
 Defrost operation is available
regardless of frosting condition and
total time of heating operation.
 Defrost operation in not performed
when the temperature of outdoor
heat exchanger is higher than 20°C,
high pressure is higher than 3.3MPa
(33kgf/cm2G) or Thermo-OFF.
TEST RUNNING
Remarks
Take care that the indoor units
start operation in accord with the
test run operation of the outdoor
unit.
The test run is started from the
outdoor unit and stopped 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
In case that the plural indoor
units are connected with one
remote control switch, all the
units start test run operation at
the same time, therefore, turn
the power source OFF for the
indoor units not to operate test
run. In this case, the "TEST
RUN" indication of the remote
control switch may flicker, and
this is not abnormal.
The setting of DSW1 is not
required for the test run from the
remote control switch.
Do not repeat compressor
ON/OFF frequently.
Do not repeat defrost operation
frequently.
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