Appendix
SiEN34-705
204
General Information
7.14.11 LED Display for Master/slave Judgment Malfunctions at the Time of
Test Operation.
Applicable
Models
RX(Y)(Q)
~
P (Outdoor unit multi system of VRV III series)
Condition
LED display for master/slave judgment remained to be turned off the test operation of the multi
system of two VRV III units though the unit being connected to the indoor-to-outdoor unit
connection wire should be judged as a master unit normally.
At that time, the same LED for the slave unit of outdoor multi connection was blinking.
Cause
Instead of connection of "outdoor multi terminals (Q1 and Q2)", "outdoor-to-outdoor (F1 and
F2)" connection was being applied at the time of multiple operation.
Measure
Recovers by correcting the wire connections between outdoor units to "outdoor multi (Q1 and
Q2)".
Point of
Diagnosis
Select the method of connection of outdoor units from the following two methods, A and B.
A. Batch connection between outdoor units of different systems
→
Connect the "Out - Out
terminals (F1 and F2)".
B. Multiple connection of the same system
→
Connect the "outdoor multiple terminals (Q1 and
Q2)".
[Incorrect]
[Correct]
In - Out
In - Out
Outdoor
multi
Outdoor
multi
Out - Out
Out - Out
