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7 Configuration
Installer and user reference guide
28
RXYSQ4~6TAY1B
VRV IV-S system air conditioner
4P482257-1 – 2017.03
Mode
Description
Mode 2
(field settings)
Mode 2 is used to change the field settings of
the system. Consulting the current field setting
value and changing the current field setting
value is possible.
In general, normal operation can be resumed
without special intervention after changing field
settings.
Some field settings are used for special
operation (e.g., 1 time operation, recovery/
vacuuming setting, manual adding refrigerant
setting, etc.). In such a case, it is required to
abort the special operation before normal
operation can restart. It will be indicated in
below explanations.
7.2.2
To access the field setting components
See
"6.2.2 To open the outdoor unit" on page 15
.
7.2.3
Field setting components
NOTICE
The DIP switches (DS1 and/or DS2 on A1P) are not used.
Do NOT change the factory setting.
The components to make field settings:
▪ Push buttons (BS1~BS5)
▪ 7‑LEDs display (H1P~H7P)
▪ H8P: LED for indication during initialisation
X1M
A1P
BS2
SET
BS1
MODE
BS3
RETURN
BS4
TEST
BS5
RESET
H1P
H2P
H3P
H4P
H5P
H6P
H7P
MODE
TEST:
L.N.O.P. DEMAND
C/H SELECT
HWL:
IND
MASTER SLAVE
H8P
MULTI
ON (
) OFF ( ) Flashing (
)
Push buttons
Use the push buttons to make the field settings. Operate the push
buttons with an insulated stick (such as a closed ball-point pen) to
avoid touching of live parts.
Push buttons
BS1: MODE: For changing the set mode
BS2: SET: For field setting
BS3: RETURN: For field setting
BS4: TEST: For test operation
BS5: RESET: For resetting the address when the wiring is changed
or when an additional indoor unit is installed
Display
The display gives feedback about the field settings, which are
defined as [Mode-Setting]=Value.
Display
7‑LEDs display
H1P: Shows the mode
H2P~H7P: Shows the settings and values, represented in binary
code
H8P: NOT used for field settings, but used during initialisation
Example:
H1P H2P H3P H4P H5P H6P H7P
-
+
+
+
+
+
[
H1P
32 16
8
4
2
1]
Description
(H1P OFF)
Default situation
(H1P flashing)
Mode 1
(H1P ON)
Mode 2
+
+
+
+
+
0
0
8
0
0
0
(H2P~H7P = binary 8)
Setting 8
(in mode 2)
+
+
+
+
+
0
0
0
4
0
0
(H2P~H7P = binary 4)
Value 4
(in mode 2)
7.2.4
To access mode 1 or 2
After the units are turned ON, the display goes to its default
situation. From there, you can access mode 1 and mode 2.
Initialisation: default situation
NOTICE
Be sure to turn on the power 6 hours before operation in
order to have power running to the crankcase heater and
to protect the compressor.
Turn on the power supply of the outdoor unit and all indoor units.
When the communication between indoor units and outdoor unit is
established and normal, the display indication state will be as below
(default situation when shipped from factory).
10~12 min
b
c
a
a
Power ON
b
Default situation
c
LED indication when there is a malfunction
If the default situation is not displayed after 10~12 minutes, check
the malfunction code on the indoor unit user interface. Solve the
malfunction code accordingly. First, check the communication wiring.
Switching between modes
Use BS1 to switch between the default situation, mode 1 and
mode 2.