question

Hi @VoyagerC470

It is advised to still update the MPPT Control, even after the firmware of the MPPTs themselves are updated.

Kind regards,

Thiemo van Engelen

We completed the Firmware 1.03 to MPPT Controller. No change. Still blinking "Connecting". We have 2 fully redundant systems on the boat and the "controller" does the same error in the other side, too. Yet, I can take side (panel, solar chargerc cabling, etc) that shows error and connect to other MPPT Controller and it works fine. Appears to be only a MPPT controller firmware issue. This is frustrating. Advice?

Hi

Just so I understand correctly:
1. You have 2 MPPTs and 2 MPPT Controls?
2. One MPPT Control is working perfectly and one MPPT Control is only showing "CONNECTING"?5. It does not matter which MPPT you connect the failing MPPT Control to, in both cases it shows "CONNECTING"?
4. The working MPPT Control is working perfectly on both MPPTs?

If the above is indeed the case have one more question to determine whether the problem is the VE.Direct cable or the MPPT Control itself:
5. Did you only switch the MPPT Control when testing it on both MPPTs or did you also switch the cable?

When you also switched the cable, I would also try without swapping the cable. When the failing MPPT Control now works, the problem is with the cable.

When you did not swap the cables (but kept them connected to their own MPPT), then it looks like the communication port of the MPPT Control is broken.

Kind regards,

Thiemo van Engelen

Hi Thiemo, After seeing your last comment, we went back and did the finally troubleshooting. It was in fact the control display that was faulty. Both VE Direct cables (off both controllers) worked on the good display. Neither worked on the faulty display. We just received the new control display and installed. It works fine as of today. Thanks for following up with me on the troubleshooting.