Hitachi RAS-5FSN Installations- Und Betriebshandbuch Seite 34

TEST RUN
30
17.3. 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)
DSW4
Switch for Setting of Service Operation and Function
1. Test Run
COOL/HEAT Setting
(ON: Heating Operation)
ON
3. OFF (Fixed)
1 2 3 4 5 6 4. Manual Compressor OFF
5. OFF (Fixed)
6. OFF (Fixed)
Dip Switch Setting
Test Run Setting of Operation Mode
Cooling: Set DSW4-2 OFF.
ON
1 2 3 4 5 6
Heating: Set DSW4-2 ON.
ON
1 2 3 4 5 6
Starting Test Run
Set DSW4-1 ON and the operation is
started after a few ~20 seconds.
When heating operation, leave DSW4-2
at ON
ON
1 2 3 4 5 6
Manual OFF Setting
of Compressor
- Compressor Manual
OFF: Set DSW4-4 ON.
ON
1 2 3 4 5 6
- Compressor ON:
Set DSW4-4 OFF.
ON
1 2 3 4 5 6
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 DSW4 OFF when the test run
operation is completed.
Outdoor Unit Printed Circuit Board (PWB1)
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 DSW4-1 of the outdoor
unit.
Continuous operation during 2 hours
is performed without Thermo-OFF.
When DSW4-4 is ON during
compressor operation, the
compressor stops to operate
immediately and the indoor unit is
under the condition of Thermo-OFF.
When DSW4-4 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 is not performed
when the temperature of outdoor
heat exchanger is higher than 10°C,
high pressure is higher than 3.3MPa
2
(33kgf/cm G) or Thermo-OFF.
For Service
ON
OFF
DWS4
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 "TSET RUN"
indication of the remote control switch
may flicker, and this is not abnormal.
The setting of DSW4 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.
When manual defrost operation is
accepted by PSW1, the time left
before starting defrost operation is
indicated at the 7-segment indicator on
the PCB.
Time left (every 4 seconds)