Daikin VRV S RXQ4/5ARV1 Service Manual page 173

SiAF332111E
with the BS buttons (BS1~3) on outdoor unit PCB (A1P).
(See the Service Precautions label for details)
Caution
Power supply has been turned ON for outdoor unit, be careful to avoid electric shock.
(6) Check whether the gas side and liquid side stop valves have been opened. Open them if
they are closed.
Caution
Operation with the stop valve closed may result in compressor error.
(7) Perform test operation based on the Service Precautions label attached to the front panel.
The air conditioning system will automatically stop after about 40 minutes of operation. If there
is no error code on the remote controller display, test operation is complete. The unit may
perform normal operation after 5 minutes.
(8) Be sure to attach the front panel of the outdoor unit after test operation is completed.
About test operation
 In order to ensure uniform refrigerant distribution, it may take up to around 10 minutes for the
 Be sure to perform error check for all indoor units. After completing test operation, operate
 Test operation cannot be performed when the unit is in other modes such as refrigerant
 Never perform test operation with suction pipe thermistor (R3T), discharge pipe thermistor
For normal operation
Set the master unit
For wired remote controller
 After test operation is completed, the symbol MASTER CONTROLLED blinks on all remote
 Set the master unit as per customer's request.
 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
 For other remote controllers excluding the above, the symbol MASTER CONTROLLED
For wireless remote controller
 After test operation is completed, timer lamps blink on all indoor units connected here.
 Set the master unit as customer's request.
 Press the operation mode changeover button on the remote controller of the master unit.
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 produced by liquid compression of the compressor can be heard, stop the
unit immediately. Operate again after powering up the crankcase heater completely.)
(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.
Part 5 Field Settings and Test Operation
 Set the BS buttons (BS1~3) after making sure the microcomputer normal 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.)
compressor to start up after the unit starting operation. This is not a error.
the system normally with the remote controller.
recycling mode.
(R21T) and pressure sensor (S1NPH, S1NPL) removed. Failure to do so will result in
compressor damage.
controllers connected here.
(It is recommended to set the indoor unit with highest frequency of use as the master unit.)
CONTROLLED vanishes.
lights up.
(It is recommended to set the indoor unit with highest frequency of use as the master unit.)
Then a sound of beeps can be heard and the timer lamps on all indoor units go out.
Test Operation (4/5/10/12 HP Models)
167