Daikin R2TND018A4AA [9/12] Maintenance and cleaning
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Daikin R2TND018A4AA [9/12] Maintenance and cleaning

Daikin R2CND024A4AA [9/12] Maintenance and cleaning
4 Maintenance and cleaning
Operation manual
9
R2CND024A4AA + R2TND012~024A4AA
Wall-mounted condensing boiler
3P469438-4D – 2017.07
# Description
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 ROTEX
Opentherm room thermostat during night mode. Only
visible in case ROTEX Opentherm room thermostat is
connected.
To use the user settings menu
1 Press the "Enter" button when the icon is displayed on the
menu level 1 screen.
Result: You can see the parameter values on menu level 2.
2 Select an index between "00" and "10" with the right dial.
3 Press the "Enter" button when the parameter that you want to
change is displayed.
Result: You can see the menu level 3 screen. Up and down
arrows will appear.
4 Change the parameter with the right dial.
5 Press the "Enter" button to confirm or the "Cancel" button to
cancel. You will return to menu level 2 after pressing "Enter" or
"Back"
a b c
a Menu level 1
b Menu level 2
c Menu level 3
3.5.4 Installer settings menu
Only qualified persons are allowed to enter the installer settings
menu.
4 Maintenance and cleaning
WARNING
The boiler should be maintained by authorised persons
every year.
Annual maintenance cycle is very important for safe operation of
your boiler and to ensure reliable, efficient and long lasting operation
of it.
Contact your service agent for details.
DANGER
Incorrect maintenance and repairs can lead to injury and
material damage.
▪ Never attempt to perform maintenance work or repairs
on the unit yourself.
▪ Contact your service agent.
4.1 To clean the outer surface of the
unit
Clean the outer surface of your boiler with a damp cloth and a little
solvent-free soap.
CAUTION
Sprays, solvents or cleaning agents containing chlorine
can damage the exterior, the fittings or the control unit. Do
not use them for cleaning purposes.
5 Energy saving tips
▪ Operating the unit in central heating ECO mode provides the most
economical central heating operation conditions.
▪ Do not run the boiler in domestic hot water comfort mode.
Domestic hot water comfort mode involves pre- and post-heating,
which is luxury, not necessity.
▪ Close the thermostatic radiator valves when ventilating the rooms.
▪ The largest heat loss occurs through windows and outer doors.
Check windows and doors for air-tightness. Close any blinds at
night.
▪ Do not hide radiators behind large furniture (i.e. couch, desk, etc.).
Minimum 50 cm of clearance must remain, otherwise the heated
air cannot be circulated and the room will not heat up efficiently.
▪ Do not let your room become too hot. Decreasing the room
temperature during the day saves energy.
▪ Have your combi boiler's maintenance performed at least
annually.
▪ Provide your building with sufficient heat insulation.
▪ Thermostatic valves should be used. Each room should be
adjusted according to comfort conditions. For reception rooms,
this is 20°C, living rooms 22°C, kitchens 18°C and bedrooms
18°C.
▪ Prevent radiators from getting covered by curtains.
6 Contact
Contact a local competent service agent if you have any questions
regarding the maintenance and repair of your system. You can find
the contact information of our competent services at www.rotex-
heating.com
7 Error codes
# Problem Solution
10-64 Gas valve circuit error Perform reset. If problem repeats,
contact your service agent.
10-65 Gas valve current
error
Perform reset. If problem repeats,
contact your service agent.
11-64 Ignition does not take
place
Make sure valve on the gas line is
opened. Perform reset after third
unsuccessful ignition trial.
11-65 Flame stabilisation
fault
Wait for boiler's ignition trial.
11-66 Flame signal loss in
safety time
Perform reset after third
unsuccessful ignition trial. If problem
repeats, contact your service agent.
11-67 Flame loss during
operation
Temporary error. Wait for boiler to
re-ignite.

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