Daikin D2CND028A1AA, Servicing Manual

D2CND0 D2CND0 D2CND0 

D2CND0 D2TND0 D2TND035A4AA

Wall-mounted condensing boiler

ESIE17 - 09 / 2017.11

Servicing manual

30

User  settings  menu  comprises  parameters  that  can  be 

changed and adjusted by users.

7.10.2.1  Detailed  Explanations  of  User  Parame

-

ters

U00: 

 When using outdoor sensor, above this parameter value 

of outside temperature, boiler senses the season as summer 

and not activate central heating although there is demand.

U01:

 This value is used when only outside sensor is connect-

ed to the boiler (No Opentherm RT connection). The param

-

eter heating slope is important to adapt the weather compen

-

sation to the individual heating system, the building and the 

thermal insulation. The heating slope can be adjusted from 0 

to 40. The higher the value heating slope, the higher the boiler 

central heating set temperature.

Note: 

To activate Weather compensation, heating slope value 

must be higher than “5”.

U02:

 Enabling / disabling Central Heating ECO mode.  

1 = enabled, 0 = disabled

U03:

 Enabling / disabling DHW Comfort mode.  

1 = enabled, 0 = disabled

U04:

 Domestic hot water setvalue (Same function that can be 

done via right dial when DHW mode is enabled).

7 Operation

USER SETTINGS

Parame-

ter No

Description 

Unit

Factory 

setting

Range

U00

Summer-Winter 

switch over tempe

-

rature

ºC

20

10 - 30

U01

Heating slope 

none

0

0 - 40

U02

Central heating 

ECO mode

none

0

0 - 1

U03

Domestic hot water 

comfort mode

none

0

0 - 1

U04

DHW set value

ºC

50

35 - 60

U05

Set value for the 

room thermostat at 

day mode

ºC

21

10 - 30

U06

Set value for the 

room thermostat at 

reduced mode

ºC

18

10 - 30

U07

Set value for the 

flow temperature at 

day mode

ºC

50

30 - 80

U08

Set value for the 

flow temperature at 

reduced mode

ºC

35

30 - 80

U09

Domestic hot water 

comfort mode user 

record dependancy

none

1

1,2 or 

24

U10

Room Temp. setpo

-

int used by Daikin 

Opentherm RT 

during night.

ºC

18

10 - 30

7.10.2  User settings menu  

U05:

 When On-Off Room thermostat and outdoor sensor are 

both  connected, this parameter value is the virtual room tem

-

perature setpoint when there is a heat demand. 

U06:

 When On-Off Room thermostat and outdoor sensor are 

both connected, this parameter value is the virtual room tem

-

perature setpoint when there is no heat demand.

Note: 

For this parameter value to be active, reducing mode 

have to be enabled by your service agent, otherwise central 

heating mode will not be activated when there is no heat de-

mand. 

U07: 

When On-Off Room thermostat is connected and out

-

door sensor is not connected, this parameter value is the cen

-

tral heating water temperature setpoint when there is a heat 

demand.

U08: 

When On-Off Room thermostat is connected and out

-

door sensor is not connected, this parameter value is the cen

-

tral  heating  water  tempearture  setpoint  when  there  is  not  a 

heat demand.

Note:

 For this parameter value to be active, Reducing mode 

have to be enabled by your service agent, otherwise central 

heating mode will not be activated when there is no het de-

mand.

U09: 

If parameter is 1, comfort mode preheating will depend

on the user record. It will preheat the water according to

the previous day user records.

If parameter is 2, comfort mode preheating will be

independent of the user record, and at the highest

comfort level (3-star comfort according to EN 13302).

If parameter is 24, comfort mode preheating will be

independent of the user record.

Note:

 If you increase the comfort level, the energy

consumption increases.

U10: 

Room temperature setpoint  used by Daikin Opentherm 

RT  during  “Night  mode”.  Only  visible  in  case  Daikin  Open

-

therm room thermostat is connected.

To  go  into  the  User  Settings  menu,  press  the  Enter  Button 

when the         icon is displayed on the menu level 1 screen.

You can see the parameter values on menu level 2. 

Select an index between “00” and “10” with the right dial. 

Press “Enter” when the parameter that you want to change is 

displayed. This  screen is menu level 3 screen.

Up  and  Down  arrows  will  appear,  and  you  will  be  able  to 

change the parameter with the right dial. 

Press “Enter” to confirm or “cancel” to cancel. You will return 

to  menu level 2 after pressing “Enter” or “Back”.

Note:

Virtual room temperature means, setpoint which adjust 

at the boiler’s screen when ODS connects the boiler.