Manual Corrigo Ventilation, revision R
Chapter 5
Functional description
47
In- and outputs
DI
Extended Operation, Normal
DI
Extended Operation, Reduced
DI
External switch
5.8 Time-switch outputs
Up to five digital time-switch outputs can be configured. Each timer channel has a separate
scheduler with two periods per week-day.
Timer output five can be used to control the function Recirculation. See 5.1.11.
In- and outputs
DO
Extra time channel 1
DO
Extra time channel 2
DO
Extra time channel 3
DO
Extra time channel 4
DO
Extra time channel 5
5.9 Alarms
Alarm handling
Alarms are indicated by the red alarm LED on the front or on E3-DSP.
All alarms can be monitored, acknowledged and blocked using the display and buttons or via E3-
DSP.
Alarm priorities
Alarms can be given different priority levels, A-alarm, B-alarm, C-alarm or not active. Digital
outputs can be bound to act as alarm outputs for A-alarms or B/C-alarms or both A- and B/C alarms.
The digital outputs can be inverted, so that an inoperative alarm gives a high output and vice versa.
A- and B-alarms must be acknowledged to reset. C-alarms automatically reset as soon as there is no
longer a cause for alarm.
Stop function
For each alarm there is the possibility of choosing whether activated alarm should stop control or
not. Automatic restart will take place after removal of the alarm cause and the alarm has been
acknowledged.
For some alarm types such as electric heating high temperature limit and water heating frost
protection it would be dangerous to not stop the unit on alarm. Therefore, for such alarm types, the
program will always reset the stop function to "Active" even if the operator should choose
"Inactive".
Unfortunately it is not possible to remove the display text concerning the stop function for these
alarm types. This since the available program space demands that all alarms are treated in the same
way in the display.
Note: For alarms that have been set to "Inactive", the extra stop function should also be set to
"Inactive", or unexpected malfunctions may occur.