18
Dip switch setting Operation Remarks
Test run
Setting of operation mode.
Cooling: Set DSW301 pin 1-2 OFF.
Heating: Set DSW301 pin 2 ON.
Starting test run. Set DSW301 pin 1
ON and the operation is started after a
few ~20 seconds.
Cooling Heating
The indoor unit automatically start to
operate when the test run of the outdo-
or unit is set.
The ON/OFF operation can be per-
formed from the remote control switch
or DSW301-1 of the outdoor unit.
Continuous operation during 2 hours
is performed without Thermo-OFF.
NOTE
TEST RUN operation time can be in-
creased depressing the time switch
in the Remote Control.
If is setting DSW1-3 ON, cooling/
heating intermediate season mode is
activaded.
Take care that the indoor units start opera-
tion 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 operation at the
same time, therefore, turn the power sour-
ce OFF for the indoor units not to operate
test run. In this case, the TEST RUN in-
dication of the remote control switch may
icker, and this is not abnormal.
The setting of DSW1 is not required for the
test run from the remote control switch.
Manual OFF of
compressor
Setting
- Compressor Manual OFF:
Set DSW301 pin 4 ON.
- Compressor ON:
Set DSW301 all pins OFF.
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.
• Do not repeat compressor ON/OFF fre-
quently.
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 star-
ting heating operation.
Manual defrost operation nishes.
Defrost operation is automatically ended
and the heating operation is started.
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.
• Do not repeat defrost operation fre-
quently.
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