Hitachi RAS-2HVNP Installations- Und Betriebshandbuch Seite 39

18
1 Test running
Dip switch setting
 Setting of operation mode.
Cooling: Set DSW301 pin 1-2 OFF.
Heating: Set DSW301 pin 2 ON.
Test run
 Starting test run. Set DSW301 pin 1
ON and the operation is started after a
few ~20 seconds.
Cooling
 Setting
- Compressor Manual OFF:
Set DSW301 pin 4 ON.
Manual OFF of
compressor
- Compressor ON:
Set DSW301 all pins OFF.
 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 star-
Manual defrost
ting heating operation.
 Manual defrost operation finishes.
Defrost operation is automatically ended
and the heating operation is started.
39
PMML0248A
 The indoor unit automatically start to
operate when the test run of the outdoor
unit is set.
 The ON/OFF operation can be perfor-
med from the remote control switch or
DSW301-1 of the outdoor unit.
 Continuous operation during 2 hours
is performed without Thermo-OFF.
N O T E
•
TEST RUN operation time can be
increased depressing the time
Heating
switch in the Remote Control.
•
If is setting DSW1-3 ON, cooling/
heating
mode is activaded.
 When DSW301-4 is ON during com-
pressor operation, the compressor stops
to operate immediately and the indoor
unit is under the condition of Thermo-
OFF.
 When DSW1-4 is OFF, the compres-
sor starts to operate after the cancella-
tion of 3-minutes guard.
 Defrost operation is available regar-
dless of frosting condition and total time
of heating operation.
 Defrost operation in not performed
when the temperature of outdoor heat
exchanger is higher than 10°C, high
pressure is higher than 3.3MPa (33kgf/
cm 2 G) or Thermo-OFF.
Operation
•
Take care that the indoor units start
operation in accord with the test run
operation of the outdoor unit.
•
If the test run is started from the outdoor
unit, cannot be cancelled by the remote
control.
•
In case that the plural indoor units are
connected with one remote control
switch, all the units start test run ope-
ration 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.
intermediate season
•
Do not repeat compressor ON/OFF fre-
quently.
•
Do not repeat defrost operation fre-
quently.
Remarks