REC Indovent AB, Box 37, SE-431 21 Mölndal, Sweden
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+46-31-675500
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www.rec-indovent.se
30
OPERATION & CONTROL UNIT
Air Handling Unit RT 250/400S-EC-RS
Alarms
5. Alarm history
The last 21 alarms are displayed. You can see when the alarm went off, when it was acknowledged
and/or returned to normal, etc. This screen can only be monitored.
Current alarms and their status are displayed if you press the red button
This is where you deal with alarms: acknowledge, block or open them.
The alarms are classified according to the severity of the fault.
Some alarms lead to an immediate shut-down of the unit.
Even if an alarm has been returned (dealt with), it must also be acknowledged in order to remove it
from the list of current alarms.
An acknowledged alarm that has not yet been dealt with remains on the screen as Acknowledged.
It
disappears from the screen when the fault has been dealt with.
Menu screen, example (Current alarms).
Line 1 Shows type of alarm
Line 2
Line 3 Shows when it occurred and how it is classified.
Line 4 Shows alarm status, if any.
Press OK - options are shown.
Options:
Acknowledge
Block or unblock
Cancel
Line 1 Shows type of alarm.
Line 2
Line 3 Options how to deal with alarm (scroll up or down)
Line 4 Choose action.
Menu screen, example (Alarm history ).
Line 1 Shows when it occurred and how it is classified
Line 2 Shows type of alarm.
Line 3
Line 4 Shows alarm status.
List of alarms
Outdoor temperature sensor faulty
Supply air temperature sensor
faulty
Exhaust air temperature sensor
faulty
Extract air temperature sensor
faulty
Room temperature sensor faulty
Frost protection temperature
sensor faulty
Frost protection alarm
Supply fan
failure
Exhaust fan failure
Fan overheated
Electrical heating
overheated
Filter guard
Cooling coil Manual
After-heater Manual
By-pass Manual
ULS / Outdoor air damper
Manual
KAVK / Condensation boiler
Manual
P1-heating Manual
P1-cooling Manual
Supply air fan Manual
Exhaust air fan Manual
Supply air controller Manual
Internal coil failure (CR2032)
Failure EA fan
19 Mar 09:49 Class: A
19 Mar 09:59 A
Failure EA fan
Blocked
Failure EA fan
Acknowledge
Block
