Electrical Connections; Operating And Adjustment Setting - Daikin FWEC2T Installations- Und Bedienungsanleitung

maximum speed); this switch has no effects if
the main ON/OFF switch is set in the ON mo-
de with automatic ventilation (only FWEC10)
„ Green led warning (FWEC2T):
Ū Led is switched off: fan coil is working
neither in cooling nor heating mode.
There are no anomalies.
Ū Led is permanently switched on: fan coil
is working in cooling or heating mode.
Ū Led is slowly blinking: water temperatu-
re is not compliant
Ū Led is quickly blinking: temperature
probe is faulty or disconnected
„ Blue and red warning led (FWEC4T and
4

ELECTRICAL CONNECTIONS

All of the operations must be carried out by
qualified staff, in accordance with regulations
in force. For any electrical related procedure,
refer to the electrical diagrams attached to this
documentation.
We also suggest making sure that the charac-
teristics of the electrical network are suitable for
the absorption levels reported in the electrical
data table.
Before carrying out any operation on elec-
trical parts, make sure the power supply is
5

OPERATING AND ADJUSTMENT SETTING:

On the electric circuit of the controller there are
electric devices able to modify three different
settings:
Ū REMOTE jumper used to specify the position
of the air probe on the basis of which the con-
troller makes the adjustment. The two pos-
sibilities are on board probe (factory default
setting) or remote wired probe (Fig. 5).
Ū AUTO jumper to specify how the changeover
(SUMMER/WINTER) is supposed to be applied
by the controller (only FWEC4T and FWEC10).
The two possibilities are the manual selec-
tion (factory default setting) or the automatic
changeover on the basis of air temperature
(Fig. 5).
Ū Potentiometer for the hysteresis calibration
8
FWEC2T/4T/10
FWEC10):
Ū Led is permanently blue: fan coil is in co-
oling mode
Ū Led is permanently red: fan coil is in he-
ating mode
Ū Red led is blinking: water temperature is
too low to heat
Ū Both red and blue led blinking: tempe-
rature probe is faulty or disconnected
„ Control knob for temperature setting from 5
to 35 °C
„ Manual switch mode:
Ū SUMMER/COOLING
Ū WINTER/HEATING
disconnected. Check that the net voltage is
compatible with the specifications of the unit
(voltage, number of phases, frequency) shown
on the unit rating plate. The supply voltage
must not fluctuate by more than ±5% in relation
to the rated value. The electrical connections
must be set up according to the electrical dia-
gram attached to the specific unit and with the
regulations in force.
WARNING: the use of shielded cable is rec-
ommended during the installation.
(from 1°C to 10°C) around the temperature
SET for the automatic SUMMER/WINTER
changeover (only FWEC4T and FWEC10); we
suggest not to modify this value if not strictly
necessary, for example as a consequence of a
quick and large variation of the air tempera-
ture (Fig. 5)