SiAF332111E Test Operation (4/5/10/12 HP Models)
Part 5 Field Settings and Test Operation 163
Set the BS buttons (BS1~5) after making sure the service monitoring lamp has been
ON
.
For setting method, see the Service Precautions label attached to the front panel
of
the outdoor unit. (Be sure to keep a record of the setting items to the Service
Precautions label.)
Don't
touch the changeover switches (DS1-1) while setting them. Doing so may result
in malfunction.
(7) Check whether the gas side and liquid side stop valves have been opened
. Op
en them if
they are closed.
(8) Press the TEST (BS4) button for 5 seconds or more to perform test operation. See About
test operation on the Service Precautions label for details.
Ask other installers to perform test operation or attach the front panel before having to
leave the outdoor unit working alone.
Test operation is automatically stopped after about 30 minutes (maximum
1 hour)
operation. (Perform checks of fault wiring, closed stop valves & refrigerant charging
and auto determination of piping length.)
After
test operation is completed, if there is no error code on the display of the remote
controller, the u
nit can perform normal operation 3 minutes later.
The display of the remote controller indicates symbol of test o
peration during this
operation.
(9) Be sure to attach the front panel of the outdoor unit after test operation is completed.
About test operation
If the system is started about 12 minutes later after the indoor and outdoor units opened, the
c
ompressor will not operate and H2P will light up.
Before operating, always check whether the symbols indicated on the LED display are those
in the table under Powering ON to Test Operation.
In order to ensure uniform refrigerant distribution, it may take up to around 10 minutes for the
compressor to start up after the unit starting operation. This is not an error.
Meaning of operation check is not to check individual indoor unit. After completing operation
check, operate the system normally with the remote controller.
Test operation cannot be performed when the unit is in other modes such as refrigerant
recycling mode.
Never perform test operation with discharge pipe thermistor (R2T), suction pipe thermistor
(R3T) and pressure sensor (S1NPH, S1NPL) removed. Doing so will result in compressor
damaged.
Power supply has been turned on for outdoor unit, be careful to avoid electric shock.
Caution
Operation with the stop valve closed may result in compressor malfunction.
Caution
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