Sensor fault
Supply temp. B
Room temp.
Room temp. B
Exhaust temp.
Outdoor temp.
HRU exhaust temp
Supply after HRU
Remote setting
Free measurement
Filter dirty. Clean or change filter
(PDS= pressure difference switch information)
Alarm indicating HRU's glycol circuit positive or negative
pressure
Filter alarm
Supply filter PDE
Exhaust filt PDE
Pressure alarm
Supply filter PDS
Exhaust filt PDS
HRU glycol
Alarm
Cooling unit
HRU rotation
Fault alarm from cooling unit
Fault alarm from HRU
Annual maintTime
The AH unit running time counter has exceeded the
”Maintenance interval limit”
When Err appears in place of the setting, the sensor
circuit is cut or short-circuited
In the event of a ”Supply temp B” sensor fault, control
switches to the ”Supply temp” sensor.
ALARM RELAY CONNECTION:
32
Alarm centre
2 x 0.8
24 VAC/ 1A
31
The GSM-modem (optional equipment) offers an economical ”miniature monitor
solution” Alarm information is directed to the desired GSM numbers (1 and 2). See p.
21). In the event of an alarm the controller first sends a text message to GSM 1 where
the cause for the alarm appears. The alarm is acknowledged when the GSM sends
the same message back to the controller. If the alarm is not acknowledged by GSM 1
within 5 min, the controller sends the text message again to both GSM numbers.
Before acknowledging an alarm, press the
button to check other possible alarms. To go
to the controller's basic display before acknowledging, press the
button to bypass the
alarm display. The alarm message will return to the display if you don't press the keyboard
in 20 sec. Press
to acknowledge the alarm appearing on the display. If the cause for
the alarm has not been deleted, the alarm will remain activated but the alarm signal will
disappear and the alarm relay contact will open to wait for a new alarm.
to delete the
alarm signal. Press the group select button to find active alarms on the basic display.
ESC
OK
ESC
ALARM ACKNOWLEDGEMENT:
75
Fuse box
2 x 0.8
3
230 VAC/ 6 (1)A
Locking relay
76
AH UNIT RUNNING PERMIT:
A-alarms that shut down the AH unit
and stop-forced drives shut down
the AH unit by locking relay 3.
(in addition, R1 and R2 control ends).
18
B- ALARMS
B- ALARMS
In the event of a room
temperature or exhaust
temperature sensor fault
the controller switches
the AH unit to supply
temperature control.
R1 R2
R3
Alarm name
:
Alarm type:
Explanation:
Filter dirty. Clean or change filter.
(PDE= pressure difference emitter information)
