SiME332106E
Test Operation
Part 5 Field Settings and Test Operation
137
About 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.
For Normal Operation
Set the master unit (the indoor unit)
For wired remote controller
After test operation is completed, symbol
MASTER CONTROLLED
blinks on all connected
remote controllers.
Set the master unit as customer's request.
(It is recommended to set the indoor unit with highest frequency of use as the master unit.)
Press the operation mode changeover button on the remote controller of the master unit.
Conduct cool/heat changeover with this remote controller and the symbol
MASTER
CONTROLLED
vanishes.
For other remote controllers excluding the above, the symbol
MASTER CONTROLLED
lights up.
For wireless remote controller
After test operation is completed, timer lamps blink on all indoor units connected.
Set the master unit as customer's request.
(It is recommended to set the indoor unit with highest frequency of use as the master unit.)
Press the operation mode changeover button on the remote controller of the master unit.
Then a sound of beeps can be heard and the timer lamps on all indoor units go out.
The indoor unit has the option to change over between cooling/heating operation.
For details, refer to the installation manual included with the indoor unit.
After test operation is completed, operate the unit normally.
(1) Check the indoor and outdoor units are in normal operation.
(If a knocking sound can be heard produced by liquid compression of the compressor,
stop the unit immediately.)
(2) Operate each indoor unit one by one and check the corresponding outdoor unit is also in
operation.
(3) Check to see if cold (or hot) air is coming out from the indoor unit.
(4) Press the fan direction and strength buttons of the indoor unit to see if they operate
properly.
About normal operation check
The compressor will not restart in about 5 minutes even if the ON/OFF button of the remote
controller is pressed.
When the system operation is stopped by the remote controller, the outdoor unit may
continue operating for further 1 minute at maximum.
If any check operation was not performed through test operation at first installation, the error
code
U3
will be displayed. In this case, perform check operation in accordance with
Powering ON to Test Operation
