Setting of DIP switch (before shipment):
DSW4
Switch for setting of service operation and fuction
1 Test run
2 COOL / HEAT setting
(ON: heating mode)
3 OFF
(fixed)
4 Manual compressor
OFF
5 OFF (fixed)
6 OFF (fixed)
D A N G E R
• Do not touch any other electrical component when handling the PCB switches.
• Do
not
install or remove the service cover when the power to the outdoor unit is connected and the outdoor
unit is operating.
• Place all the contacts of DSW4 to the OFF position when the test run has been completed.
Setting the DSW Operation Notes
Test run
1. Setting the operation mode.
Cool: Set DSW4-2 OFF
Heat:. Set DSW4-2 ON
2. Start of the test run.
Set DSW4-1
ON and the operation starts
after approximately 20 seconds.
N O T E
In the heating mode, leave
DSW4-2 in the ON position.
1. The indoor unit automatically starts
when the outdoor unit test run is set.
2. The
ON/OFF can be carried out from
the remote control or DSW4-1 on the
outdoor unit.
3. The 2 hours continuous operation is
carried out without Thermo-OFF.
* Take care that the indoor units operate in
accordance with the outdoor unit test run.
* The
test run is started from the outdoor unit
and is stopped from the remote control, the
remote control test run is cancelled.
However, the test run of the outdoor unit is
not cancelled. Check that DSW4-1 of the
outdoor unit PCB is in the OFF position.
* In the case that several indoor units are
connected with a single remote control, carry
out the test run of each refrigerant system
one at a time. Then, ensure you turn the
power OFF to the indoor units in another
refrigeration system in order to not carry out
the test run.
Outdoor Unit
Test Run
Power OFF.
Indoor
Unit
* The setting of DSW4 is not required for the
test run from the remote control.
Manual OFF of
the
compressor
1. Setting.
*
Compressor
manual OFF set DSW4-4 to
the ON position.
2. Reset.
* Compressor ON: set DSW4-4 in the OFF
position.
1. When DSW4-4 is in the ON
position
during
the compressor operation, the
compressor immediately stops
operating and the indoor unit is in the
Thermo-OFF condition.
2. When DSW4-4 is in the OFF position,
the compressor starts to operate after
the 3 minute cancellation.
* Do not repeat the compressor ON/OFF
with
frequency.
Manual defrost
1. Manual defrost operation.
Press PSW5
for more than 3 seconds during
the heating operation, the defrosting
operation is started after 2 minutes. This
function is not available within the first 5
minutes of heating operation.
2. Manual defrost operation termination.
Defrost operation automatically ends and
the heating operation is restarted.
1. Defrost operation is available
regardless of
the frosting condition and
the total time of the heating operation.
2. Defrost operation is not carried out
when the outdoor unit heat exchanger
temperature is over 10 °C, the high
pressure is higher than 3.3 MPa or
Thermo-OFF .
* Do not repeat defrost with frequency.
* When
the manual defrost operation is
accepted by PSW5, the time remaining
before starting the defrost operation is
indicated on the 7 segment display on the
PCB.
Time Left (Every 4 Seconds)
When the test run is complete, place all the contacts of DSW4 in the OFF position.
7 Test run
139
SMGB0065 rev. 1 - 12/2010
7
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