Daikin VRV IV RXYQ TYDN Series Engineering Data page 33

Installation Manual
For VRV IV heat pump system it is alternatively possible to make
13.1. Accessing the push buttons on the logic board
buttons on the logic board and read out the 7 segment display (s).
To access you can remove the front inspection door of the front panel
segment displays and DIP switches.
1
2
1 Front panel
2 Main printed circuit board with 3 seven-segment display
and 3 push buttons
Operate the switches and push buttons with an insulated stick (such
as a closed ballpoint pen) to avoid touching of live parts.
Location of the segment displays, buttons and DIP switches:
BS1 MODE
BS2 SET
BS3
DS1, DS2
1
2
Segment display indications:
3P362438-1B English
34
1 2
DS1 DS2
BS1 BS2 BS3
X27A
for changing the set mode
DIP switches
7 segment displays (3 )
Push buttons
Off
Blinking
On
13.2. Operating the push buttons and DIP switches on
the logic board
13.2.1. Operating the push buttons
By operating the push buttons it is possible to:
Perform special actions (automatic refrigerant charge, test run, etc).
the required mode in the menu, select the correct setting and modify
the value of the setting. This procedure can be used any time special
as an ON/OFF (1 or 0) depending on the contents. This is informed
INFORMATION
During special operation (e.g., automatic refrigerant charging, test
run, etc.) or when an malfunction happened, information will contain
letters and numerical values.
Functions of the push button switches which are located on the
Turn on the power supply of the outdoor unit and all indoor units.
When the communication between indoor units and outdoor unit (s) is
established and normal, the segment indication state will be as follows
(default situation when shipped from factory):
When no trouble occurs: lighted as indicated (8 – 10 min).
Ready for operation: blank display indication as indicated.
tion code can be checked on the indoor unit user interface and the
outdoor unit segment display. Solve the malfunction code accordingly.
INFORMATION
Be sure to turn the power on at least 6 hours before operation in order
to have power running to the crank case heater.
Accessing modes
BS1 is used to change the mode you want to access.
Access mode 1
Push BS1 one time. Segment indication changes to:
EDUS341411-N
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3P362438-1B
Installation of Outdoor Units