Release notes ACC MT
Description: Air Center Control with Touch Display
Software version: 2.2.2
Release date: July 2023
Hardware: 8 733 502 082 and 7 733 701 822

These release notes show an overview about the status of the software including
limitations and known issues of ACC MT software version 2.2.2.

Software Status 2.2.2:
----------------------
Improvements:
- Provided thermal energy is now integrated within the monthly energy distribution report
  (not for MDCI)
- Output limitation can now be set via Modbus/TCP (not for MDCI)
- Heating set temperature can now be set again for IDUs on MDCI systems
- Modbus/TCP and PC-Interface can now be used simultaneously on the same physical Ethernet
- Scheduler is now sending correct values to IDUs within a physical IDU group

Software Status 2.2.1:
----------------------
Improvements:
- Scheduler properly turns-off IDUs after a set period

Software Status 2.2.0:
----------------------
Newly added features:
- Energy distribution for AF6300 systems
- Modbus/TCP server (expansion card required)
- Emergency shutdown

Removed features:
- None

Improvements:
- Several bugs fixed, e.g.
  - Scheduler now works as expected on AF6300 systems
  - Extrapolation for missing energy meter readings now also works in the first hour
- Security patches
- More reliable communication between frontend and backend

Limitations / known issues:
---------------------------
General:
- To be able to select a country not yet existent in the pre-installed software version,
  this version must be already installed first. A factory reset is required after a
  software update to reach the installation wizard again to select the country.
- This software can only be installed on ACC already executing 0.3 or higher.
- Sometimes after a scan, the values for indoor units do not get updated on the GUI.
  Workaround: reboot once after scanning via the menu (graceful reboot).

Lock manager:
- When changing the lock settings very fast multiple times on the same IDUs, the lock
  status displayed on the ACC may be out-of-sync. For example, the ACC shows no lock, 
  although a lock within the IDU exists (locks are generally stored within the IDUs,
  not within the ACC).
  Work around: E.g. when setting a lock, and unsetting it again on the same IDUs, wait
               at least one minute after the first change before performing the second
               change of the lock settings.

Group editor:
- Although written differently in the manual, the group editor can only be access by an
  "Administrator" user.

IDU listings:
- Scrolling with a long list of IDUs: Use either scroll bar, or touch the white area left
  of the check boxes or right of the rename icon to scroll instead of drag-n-drop.

Fault and event history
- In rare cases, already solved errors on IDU side still show as pending error within the
  fault and event history. If this is the case, please clear the fault and event history.

MDCI:
- General system limitation
  - Dry mode can be enabled on all controls (ACC MT, ARC and IRC) for IDUs connected to
    MDCI systems, but response to ACC MT is always cooling mode. This means, after some
    seconds, ACC MT will show cooling mode instead of dry mode.
  - Only mode and IRC lock are possible, although others like ARC lock are now offered by
    the ACC MT, those locks are non-functional in MDCI systems.
  - IDUs which are in mode conflict are shown as "off" on ACC MT.
  - ACC MT shows always the default icon "4-way cassette IDU", independent from the real
    IDU type.
  - The current outdoor temperature display is not available.
  - System structure: No outdoor unit information available.
  - System monitor: No diagnosis data available for MDCI systems.
- Limitations depending on ODU firmware
  - Although the ACC offers seven fan speeds, those may be mapped to three fan speeds
    in case the ODU executes an old firmware (update not possible). Use of seven fan
    speeds via the ARC and IRC still possible.

Climate 5000L / Climate 5000M
- ACC MT shows always the default icon "4-way cassette IDU", independent from the real
  IDU type.
- Although the ACC offers seven fan speeds, those are be mapped to three fan speeds.
  Use of seven fan speeds via a local control is still possible.

Energy distribution:
- In case of a broken Modbus/RTU connection to a energy meter, the energy distribution
  report may need manual correction.

Contact:
--------
In case of facing abnormalities and limitations which are not recoverable by the
resolutions offered in this document, please contact your regional sales department.