To Fill The System With Water; Method 1; Method 2 - Daikin D2C18ND024A5AA Manuel D'installation

4 Installation
Troubleshooting
LED indication
2 status LED's are available and positioned next to the LAN
connector.
Status Green LED
Normal operation Pulse every 2
LAN communication
Adapter error Fast blinking
Upgrade busy Slow blinking
Router
In case of connection problems, the router can give information
about the devices connected and the corresponding IP addresses.
Also check on the router if DHCP is enabled.
Error codes
Following errors displayed on the app are hampering the proper
operation of the adapter.
Error Code Description
U4-65 Connection with the boiler or the connection
between boiler and Remote Control is lost.
H9-01 Connection with the outdoor sensor is lost.
4.9

To fill the system with water

CAUTION
Water filling must be done while the boiler is in standby
mode.

Method 1

(For models D2HND012A5AA and D2HND018A5AA)
D
C A
1 2
4
a Use a disconnector or a double check valve according to
local regulations.
After all system connections are performed with care, perform the
following steps:
1 Connect the appliance to the main power supply. Due to low
pressure, error code "Err HJ-09" will appear on the user
interface and the status indicator light will be red.
2 Open all radiator valves.
3 Set all isolating valves to closed position.
4 Connect fresh water supply pipe to valve 3.
5 Open valves 1, 2, 3, 4.
6 Slowly turn the valve 5 to open position until pressure reaches
a value around 0.8 bar for system heights up to 6 metres. For
longer system heights, see
requirements" on page 10
Installation manual
24
Yellow LED
-
seconds
- Lights up when
communication is
active
Fast blinking
Slow blinking
5 3
a
"4.5 Central heating system
to determine filling pressure. Filling
operation should be done slowly. When pressure exceeds
0.8 bar, error code will disappear and the status indicator light
will turn to blue. Turn the valve 5 off.
7 Turn the valve 3 off. Remove the filling loop if it is required by
local regulations.
8 Check the central heating circuit - especially the couplings of
the circuit - for leakage.
9 Make sure the automatic air vent valves located on the pump
and heat exchanger are opened. Vent the air from the
installation with the manual air vent screws on the radiators.
Make sure screws are tightened after venting.
10 If after the venting the pressure decreases below 0.8 bar, refill
with water until the pressure reaches 0.8 bar again.
11 Isolate the appliance from power mains.

Method 2

(For model D2C18ND024A5AA)
E D F B
1 2 4
3
a Use a disconnector or a double check valve according to
local regulations.
After all system connections are performed with care, perform the
following steps:
1 Connect the appliance to the main power supply. Due to low
pressure, error code "Err HJ-09" will appear on the user
interface and the status indicator light will be red.
2 Open all radiator valves.
3 Set all isolating valves to closed position.
4 Connect the filling loop to the valve 7 and valve 8.
5 Set valves 1, 3, 5, 6 and 8 to open position.
6 Slowly open the valve 7 until pressure reaches a value around
0.8 bar for system heights up to 6 metres. For longer system
heights, see "4.5 Central heating system requirements" on
page 10 to determine filling pressure. Filling operation should
be done slowly. When pressure exceeds 0.8 bar, error code will
disappear and the status indicator light will turn to blue. Turn
the valve 7 off.
7 You can monitor the system pressure value from the user
interface.
8 Make sure the automatic air vent valves located on the pump
and heat exchanger are opened. Vent the air from the
installation with the manual air vent screws on the radiators.
Make sure screws are tightened after venting.
9 If after the venting the pressure decreases below 0.8 bar, refill
with water until the pressure reaches 0.8 bar again.
10 Set valve 8 to off position. Remove the filling loop if it is
required by local regulations.
11 Check the central heating circuit - especially the couplings of
the circuit - for leakage.
12 Isolate the boiler from power mains.
D2C18ND024A5AA + D2HND012/18A5AA
A
5
7 8
a
6
Wall-mounted condensing boiler
3P469346-9J – 2018.05