This device worked perfectly over the past two weeks and today it started dropping the AC loads.
This notification is displayed – “MultiPlus-II 48/5000/70-50 - #8 Ground relay test failed”
The VE.Bus Error report shows – “Last VE.Bus Error 11 report 0x24/Error occurred/GND Relay Error”
When I restart the Multi it produces the error right away. The bulk and absorption LEDs are also on.
Current firmware version is v471 (Multiplus II software version: 2623471)
I have done the following:
-Verified that AC-in GND is properly connected to grid earth.
-Tested for voltage between AC-in GND and AC-in Neutral. Ok - no voltage measured
-Verified that earth and neutral is not connected somewhere. All ok.
-Physically disconnected all cables from AC- out1 and AC-out2 to verify that there is no problems with any of the loads.
-Switched loads directly to grid via change over switches - all loads functions properly.
-Tested RCDs all ok.