Operating The Push Buttons And Dip Switches On The Logic Board - Daikin RXYQQ8T7Y1B Installation And Operation Manual

Location of the segment displays, buttons and DIP switches:
BS1 BS2
BS1 MODE for changing the set mode
BS2 SET for field setting
BS3 RETURN for field setting
DS1, DS2 DIP switches
1 7 segment displays (3x)
2 Push buttons
Segment display indications:
Off
Blinking
On
NOTICE
Make sure that all outside panels, except for the service
cover on the electrical component box, are closed while
working.
Close the lid of the electrical component box firmly before
turning on the power.
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, testrun,

etc).
Perform field settings (demand operation, low noise, etc).

Below procedure explains how to operate the push buttons to reach
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
settings and regular field setting are discussed in this manual (see
"15.2. Monitoring function and field settings" on page
Setting definition: [A-B]=C; A=mode; B=setting; C=setting value. A, B
and C are numerical values for field settings. Parameter C has to be
defined. It can be a chosen from a set (0, 1, 2, 3, 4, 5, ...) or regarded
as an ON/OFF (1 or 0) depending on the contents. This is informed
when the field setting is explained (see
field settings" on page 37).
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
outdoor PCB (A1P)
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 below
(default situation when shipped from factory).
When turning on the power supply: flashing as indicated. First checks
on power supply are executed (1~2 min).
When no trouble occurs: lighted as indicated (8~10 min).
Ready for operation: blank display indication as indicated.
RXYQQ8~20T7Y1B
VRV IV System Air Conditioner
4P345099-1 – 2013.04
1 2
DS1 DS2
BS3
X27A
37).
"15.2. Monitoring function and
When above situation cannot be confirmed after 12 min, the
malfunction code can be checked on the indoor unit user interface
and the outdoor unit segment display. Solve the malfunction code
accordingly. The communication wiring should be checked at first.
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:
Access mode 2

Push BS1 for at least 5 seconds. Segment indication changes
to:
INFORMATION
If you get confused in the middle of the process, push BS1.
Then it returns to idle situation (no indication on segment
displays: blank, refer to
switches which are located on the outdoor PCB (A1P)" on
page 29).
Mode 1
Mode 1 is used to set basic settings and to monitor the status of the
unit ("15.2. Monitoring function and field settings" on page
 Changing and access the setting in mode 1:
Once mode 1 is selected (push BS1 1 time), you can select the
wanted setting. It is done by pushing BS2. Accessing the
selected setting's value is done by pushing BS3 1 time.
To quit and return to the initial status, press BS1.

Example:
Checking the content of parameter [1-10] (to know how many indoor
units are connected to the system).
[A-B]=C in this case defined as: A=1; B=10; C=the value we want to
know/monitor:
Make sure the segment indication is as during normal operation

(default situation when shipped from factory).
 Push BS1 1 time; result segment display:
Result: mode 1 is accessed.
 Push BS2 10 times; result segment display:
Result: mode 1 setting 10 is addressed.
 Push BS3 1 time; the value which is returned (depending on the
actual field situation), is the amount of indoor units which are
connected to the system.
Result: mode 1 setting 10 is addressed and selected, return
value is monitored information
 To leave the monitoring function, push BS1 1 time, you will
return to the default situation when shipped from factory.
"Functions of the push button
37).
Installation and operation manual
29