Err31 Error Alarm On The External Display - Mmigrs2; Service Mode Through Mmigrs2 - Danfoss EKE 1A User Manual

Superheat controller, Type EKE 1A, 1B, 1C, 1D
Table 19: Examples
Parameter Navigation
Navigation and reading the status of the parameters
is possible.
 WARNING:

5.1.3 ERR31 Error Alarm on the external display - MMIGRS2

If the communication to the display is not carried out correctly, it will send an "ERR31" error notification. This may be
caused by the displayed wires H to R not being shorted, or that there have been interruptions in data
communication during the time when the display retrieves the basic information from the controller. Once the
terminations have been inspected, you should then check the software version of the external display. This is done
by holding down the Enter key and the X key for 5 seconds, until the Bios menu appears. Next, press the X key and
read off the software version in the bottom right corner. The software version must be 1.13 or newer. Once the
display's software version has been checked, check the display's settings as follows:
1. Hold the Enter key and the X key down for 5 seconds, until the Bios menu appears.
2. Select the "MCX selection" menu - Select the "Clear UI" line and press Enter - Select the "Autodetect" line and
press Enter.
3. Press the X key to return to the Bios menu.
4. Select the "COM selection" menu - Select the "CAN" line and press Enter .
5. Press the X key to return to the Bios menu.
6. Select the "Startup mode" menu - Select the "Remote application" line and press Enter.
7. Press the X key to return to the Bios menu.
8. Select the "CAN" menu - Select the "Baudrate" line and check that it is 50K - Select the "Node ID" line and check
that it is 126
9. Press the X key to return to the Bios menu.
10. Select the "Application" menu and press Enter. The display will once again retrieve data from the controller. This
process will take about 5 minutes

5.1.4 Service mode through MMIGRS2

Service mode is designed to provide a very simple way of operating the valve for diagnostic and service purpose.
There is neither application nor protection in this mode. The user can open and close the valve using simple button
presses on MMIGRS2.
© Danfoss | Climate Solutions | 2022.06
Parameter change(R012)
For examples, parameter R012 (for the main switch).
Can be changed through reference => main switch
H - R
Termination
Factory re-setting of display:
1. Pressing the bottoms X and ENTER at the same
time for 5 second
2. Select MCX SELECTION
3. Select CLEAR UI
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