Hitachi FS3 Series, Руководство по обслуживанию

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1
102
TROUBLESHOOTING
1.4.2 TEST RUN MODE BY OUTDOOR UNIT
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)
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.
DSW4
Switch for Setting of Service Operation and Function
2))
21
1. Test Run
2. COOL/HEAT Setting
(ON: Heating Operation)
3. OFF (Fixed)
4. Manual Compressor OFF
5. OFF (Fixed)
6. OFF (Fixed)
Outdoor Unit Printed Circuit Board (PCB1)
2))
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':6
Dip Switch Setting Operation Remarks
Test Run
®
Setting of Operation Mode
Cooling: Set DSW4-2 OFF.
2))
21
Heating: Set DSW4-2 ON.
2))
21
¯
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
”
2))
21
®
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.
Œ
Take care that the indoor units start
operation in accord with the test run
operation of the outdoor unit.
Œ
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
Œ
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.
Œ
The setting of DSW4 is not required for
the test run from the remote control
switch.
Manual OFF
of
Compressor
®
Setting
- Compressor Manual OFF:
Set DSW4-4 ON.
2))
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- Compressor ON:
Set DSW4-4 OFF.
2))
21
®
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.
Œ
Do not repeat compressor ON/OFF
frequently.
Manual
Defrost
®
Manual Defrost Operation Starts
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.
®
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 2.0MPa (20kgf/cm
2
G) or
Thermo-OFF.
Œ
Do not repeat defrost operation
frequently.
Œ
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.
d 2 0
Time left (every 4 seconds)
For Service