37
The number of LED fl ashes refers to the type of error detected:
Priority
Alarm/Status
Led
Actuation
1
Communication error
between hand terminal
and electronic board
Red led, 1 blink
Stop the unit
2
Extraction fan failure
Red led, 2 blinks
Stops unit after 90 s (adjustable) from the
“Fan Fault” activation. The “Fan Fault” will be
activated only when the alarm situation has
been maintained active for 30 s (confi gurable).
3
Supply fan failure
Red led, 3 blinks
Stop unit after 90 s (adjustable) from the
“Fan Fault” activation. The “Fan Fault” will be
activated only when the alarm situation has
been maintained active for 30 s (confi gurable).
4
Defrost active
Flashing green led
Defrost management
5
Bypass OPEN in manual
mode
Continuous green led
Normal operation
6
Clogged fi lter alarm
Continuous red led
Normal operation
7
ODA temp. probe failure
(fresh air)
Red led, 4 blinks
The unit stops
8
SUP temp. probe failure
(supply)
Red led, 5 blinks
Normal operation
9
ETA temp. probe failure
(extraction)
Red led, 6 blinks
Normal operation
10
EHA temp. probe failure
(exhaustion)
Red led, 7 blinks
The unit stops (freezing risk of the heat
exchanger)
The appearance of an alarm generates the activation of the digital output A1-A2, with the exception of
alarms for “Defrost active” and “Bypass open in manual mode”.
Hand terminal communication error
A
B
Fault extraction fan
A
A
A
B
Fault supply fan
A
A
A
A
A
B
ODA temp. probe failure
A
A
A
A
A
A
A
B
SUP temp. probe failure
A
A
A
A
A
A
A
A
A
B
ETA temp. probe failure
A
A
A
A
A
A
A
A
A
A
A
B
EHA temp. probe failure
A
A
A
A
A
A
A
A
A
A
A
A
A
B
Clogged fi lter alarm
Bypass ON manual mode
Defrost active
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A: 0,75 s
B: 3 s
