Daikin D2CND024A1AB [4/16] Operation
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Daikin D2CND024A1AB [4/16] Operation

Daikin D2CND024A1AB [4/16] Operation
3 Operation
Operation manual
4
D2CND024A1/4AB + D2TND012~024A4AB
Wall-mounted condensing boiler
3P469438-3M – 2019.11
3 Operation
3.1 User interface
a
e f g
cb
d
a Left dial
b LCD screen
c Right dial
d Mode / Reset
e Status indicator
f Cancel / Back
g Menu / Enter
3.1.1 Buttons and dials
The three buttons and two dials on the user interface have various
functions according to different situations, which are stated in the
table below:
Button/Dial Function Description
Mode /
Reset
Mode Change mode between summer,
winter, central heating only, standby
and full-off.
Reset Reset the lockout error.
Cancel /
Back
Cancel Cancel changes.
Back Go back to the parent menu.
Menu / Enter Menu Enter the menu function.
Enter Passing on to the next level in the
menu structure.
Confirm Confirmation of changes.
Left dial User
interaction
level
Central heating temperature setpoint.
This is either the central heating flow
temperature, the room temperature,
or the virtual room temperature,
depending on the system
configuration.
Menu level Selection of info, user, service menu.
Right dial User
interaction
level
Domestic hot water temperature
setpoint.
Menu level ▪ Selection parameter index.
▪ Change parameter values.
3.1.2 LCD screen
LCD screen is the monitor of the user interface. You can see the
boiler operation mode, setpoints, information about actuators and
menu parameters on this screen.
The LCD screen has a sleeping function. After one minute of non-
interaction with the user interface, the screen darkens. Pressing any
button or rotating any dial awakens the display.
When you interact with the user interface, the LCD screen will show
the home screen of the active operation mode and the related
setpoint, depending on the system configuration (see "3.3.3Possible
operation modes"[45]).
Status icons
Meaning of icons that appear on the LCD screen:
Icon Description
Operation mode: Standby mode
Domestic hot water operation enabled
Domestic hot water comfort mode is enabled
Central heating operation enabled
Room temperature
Outdoor sensor connection
Central heating ECO mode enabled
Network connection
Info menu
User settings menu
Service settings menu
3.1.3 Status indicator
The status indicator gives first level feedback on the operation mode
and status of the boiler.
Status Description
Standby When there is no heat demand, the status
indicator shows this with a kind of breathing
pulsation of the blue and white LED.
Flame At the moment flame ignites for central heating or
domestic hot water, the ring flashes to its
maximum, then constantly keeps glowing during
burner operation.
Error The status indicator will go into error mode when a
warning, lockout or blocking error occurs (see
"3.4Error handling"[47]). During the error
condition the status indicator continuously shows
the red blinking LED.
NOTICE
In warning error, the status indicator colour turns to blue
while the boiler is operating.
3.2 Operating the unit
3.2.1 To switch ON the unit
1 Connect the unit to the main power supply.
2 Press the "Mode" button for 5seconds to switch ON the unit.
3 After that, you can select an operation mode by pressing the
"Mode" button shortly.
Use of the unit is explained in following parts of this manual.
3.2.2 About the low water temperature function
The low water temperature function is a safety function that takes
place at first central heating operation after each power supply
interruption and at first central heating operation after each 90 days.

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