Daikin VRV X RXQ6-48ANR Series Service Manual page 143

SiME341909EA
(4) Precautions for outdoor unit multi system
All the settings should be made in the master unit. Settings in the slave units are deemed
unavailable.
Differentiation of Master/Slave Units
1. The outdoor unit master unit is the unit which has the connecting wires to the indoor unit. All
2. You may also differentiate the master/slave units by the 7-segment display.
In normal mode, press the BS1 button once, and in
the confirmation mode, check if the 7-segment
display shows the code on the right.
Press the confirmation button (BS3)
to check for the master/slave units
(5) Precautions for piping work and refrigerant charging:
This unit uses R-410A refrigerant. Pay attention to the following conditions.
1. The charging pipe and the manifold tube use R-410A products for pressure maintenance
2. Be sure to purge with nitrogen when brazing.
(6) Precautions for operating in servicing mode (field setting):
When a test operation is interrupted or after exiting service mode, please wait for at least one
minute before entering service mode again. In case of continuous execution, the outdoor unit
PCB may sometimes display an error code. If any error codes are displayed, press the
RETURN button (BS3). If performing the above operation still does not eliminate the error,
reconnect the unit to the power supply.
Part 6 Service Diagnosis
the other units are slave units.
and avoiding contamination by impurities (SUNISO oil, etc.).
 Properly perform airtightness test and vacuum drying. (Airtight test pressure: 4.0 MPa)
 Charge refrigerant in liquid state.
SEG1
1.
Master
Slave 1
Slave 2
Servicing Items to be Confirmed
7-segment display
SEG2 SEG3
0 0
0
1
2
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