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(a) Units with single-phase axial or centrifugal fans with speed
control. Phase cut-off modules by triac are used. The val-
ues indicated do not match the real voltage applied, but
rather a variable internal voltage of the controller.
Units with three-phase centrifugal fans without speed con-
trol. Set parameter F3 = 0 and close jumpers P1 and P6
of the base and expansion plates.
(b) Units with single-phase axial or centrifugal fans with speed
control. Phase cut-off modules by triac are used. The val-
ues indicated do not match the real voltage applied, but
rather a variable internal voltage of the controller.
Units with three-phase centrifugal fans without speed con-
trol. Set parameter F4 = 166 and close jumpers P1 and
P6 of the base and expansion plates.
Alarms and messages
E1 Probe B1 Automatic B1 - GND
E2 Probe B2 Automatic B2 - GND
E3 Probe B3 Automatic B3 - GND
E4 Probe B4 Automatic B4 - GND
E5 Probe B5 Automatic B5 - GND
EE EEPROM failure Automatic
FL Flow switch Automatic ID5 - IDCOM
H1 High pressure circuit 1 Manual ID1 - IDCOM
L1 Low pressure circuit 1 Manual ID2 - IDCOM
C1 Manual ID3 - IDCOM
F1 Manual ID4 - IDCOM
A1 Antifreeze Manual
d1 Defrost circuit 1 Automatic
r1 Defrost failure circuit 1 Automatic
n1 Maintenance compressor 1 Manual
H2 High pressure circuit 2 Manual ID8 - IDCOM
L2 Low pressure circuit 2 Manual ID9 - IDCOM
C2 Manual ID10 - IDCOM
F2 Manual ID11 - IDCOM
A2 Antifreeze 2 Manual
d2 Defrost circuit 2 Automatic
r2 Defrost failure circuit 2 Automatic
n2 Maintenance compressor 2 Manual
Cn Communication error Automatic
Message Cause Reset Terminals Base plate yellow LED Alarm buzzer and relay
Flashing fast
(2 flashes per sec.)
Activated
Normal flashing
(1 flash x sec.)
Deactivated
Activated
Flashing fast
DesactivatedNormal flashing
Activated
Flashing fast
DeactivatedFlashing fast
Cn flashing
Compressor 1 thermal protector or
fan 1 thermal protector (YLCC)
Fan 1 thermal protector (YLCC-H)
Compressor 2 thermal protector or
fan 2 thermal protector (YLCC)
Fan 2 thermal protector (YLCC-H)