35
ENGLISH
9. ALARM INDEX
Through the LED located in the user control it is possible to supervise the
status of the unit. This Led will show the alarm (check see table) in case of produce the
failure of some critical components of the unit or simply by notification (replacement
filters, by-pass manual mode, supply temperature <11ºC). Depending on risk level of
the alarm generated, the control will manage the response required. If it is necessary,
the unit will be stopped for safety reasons.
Priority
Alarm/State
LED
ACTION
1
Extract fan Failure
Red LED, 1 blink
Unit stops
2
Supply fan failure
Red LED, 2 blinks
Unit stops
3
Supply air temperature <11ºC Red LED, 4 blinks
Unit stops. Every 2 hours
the unit starts for 5
minutes to check if
conditions allow normal
operation.
4
ODA Sensor failure (fresh air) Red LED, 5 blinks
Normal operation
5
SUP sensor failure (supply)
Red LED, 6 blinks
Normal operation
6
ETA sensor failure (extract)
Red LED, 7 blinks
Normal operation
7
EHA sensor failure (exhaust)
Red LED, 8 blinks
Normal operation
8
Dirty filter failure
Red LED continuous
Normal operation
9
ON Bypass manual mode
Green LED
continuous
Normal operation
10
Active defrost
Green LED blinking
Defrost management
Blink: A=0,75s; Interval : B= 3s
1
A
B
2
A A A
B
3
A A A A A A A
B
4
A A A A A A A A A
B
5
A A A A A A A A A A A
B
6
A A A A A A A A A A A A A
B
7
A A A A A A A A A A A A A A A
B
8
9
10
A A A A A A A A A A A A A A A A A A
Summary of Contents for CAD HE 450 H BASIC
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