Stampee
New Member
Dear Members: I could really use some assistance, I do not know what else to do at this point, I cannot find my problem, and am so far getting no where's with sunnyboy tech support. I have not heard from them since Thursday morning. Sept 28th. I wrote them on the 29th with no reply.
My Inverter has been down for a week now, since Sunday 24 September. I am not getting useable help from Tech support. The system was commissioned June 2nd 2022. It has been running okay until last week when I got the 6404 Error. I have reset the inverter by shutting it down over night to no avail.
I have 26 panels on 4 separate strings going into the inverter. They are Canadian solar 250W panels. CS6p-250PX Open circuit voltage 37.2V
As per Sunnyboy Tech I have taken the following measurements.
AC side L1/N 120.9V L2/N 117.7 V L1/L2 235.6 V
DC strings taken in the evening.
String A +/- 191.8V +/PE 68.3V -/PE 67.1V
String B +/- 183.6V +/PE 60V -/PE 95V
String C +/- 110-125V +/PE 65V -/PE 92.5V
String D +/- 228.8V +/PE 92.8V -/PE 118.8V
I also ran the solar on only string D and on only string A I still got the error 6406.
I cannot believe I have 4 bad strings in my system.
What DC voltages should I see on a good string? The strings are bone dry, no obvious water can be seen in the solar panels. It has not rained here for many days now.
I am at a loss now what to do. I cannot afford a new inverter as a test, and sure cannot install all new solar panels.
I would greatly appreciate some advice as I am apparently not getting anything out of sunnyboy. They have been dragging their feet so long. I have to hound them for a response. The last message from them, they wanted my address(which they already had by the way) in case they may have to do a replacement. I have heard nothing since.
Thank you
_stampee
My Inverter has been down for a week now, since Sunday 24 September. I am not getting useable help from Tech support. The system was commissioned June 2nd 2022. It has been running okay until last week when I got the 6404 Error. I have reset the inverter by shutting it down over night to no avail.
I have 26 panels on 4 separate strings going into the inverter. They are Canadian solar 250W panels. CS6p-250PX Open circuit voltage 37.2V
As per Sunnyboy Tech I have taken the following measurements.
AC side L1/N 120.9V L2/N 117.7 V L1/L2 235.6 V
DC strings taken in the evening.
String A +/- 191.8V +/PE 68.3V -/PE 67.1V
String B +/- 183.6V +/PE 60V -/PE 95V
String C +/- 110-125V +/PE 65V -/PE 92.5V
String D +/- 228.8V +/PE 92.8V -/PE 118.8V
I also ran the solar on only string D and on only string A I still got the error 6406.
I cannot believe I have 4 bad strings in my system.
What DC voltages should I see on a good string? The strings are bone dry, no obvious water can be seen in the solar panels. It has not rained here for many days now.
I am at a loss now what to do. I cannot afford a new inverter as a test, and sure cannot install all new solar panels.
I would greatly appreciate some advice as I am apparently not getting anything out of sunnyboy. They have been dragging their feet so long. I have to hound them for a response. The last message from them, they wanted my address(which they already had by the way) in case they may have to do a replacement. I have heard nothing since.
Thank you
_stampee