For a followup, it appears that the problem was in a ribbon cable
connection. After checking the power wiring and starting the inverter
again, the problem still remained.
Then, I disconnected and reconnected the ribbon cables at both ends. On
restart, the voltage was with 6 V of the multi meter reading. I adjusted
this out with the offset in the calibration menu. The voltage has read
steady for a day now.
Thank you!
Drake
Drake Chamberlin
Athens Electric LLC
OH Electrical Contractor License 44810
NABCEP Certified Solar PV Installation Professional
740-856-9648
---
On 2025-04-06 09:25, Mac Lewis via RE-wrenches wrote:
Also look for loose connections and corrosion. If it tries to push
current and the voltage rapidly rises, it can indicate resistance
somewhere.
Good luck!
On Sun, Apr 6, 2025 at 7:20 AM Maverick Brown via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote:
Maybe the Calibrate setting got changed somehow.
OpticsRE: Device Map, Inverter, Calibrate.
From the Mate: Lock, 141, Settings, Inverter, Calibrate.
Make sure the settings are Zero offset or at least appropriate.
Thank you,
Maverick
Maverick Brown
Off-Grid Solar Commander since 2006
Maverick Solar Enterprises, Inc.
* Solar Commander Remote Power
* SunFlow Systems Cathodic Protection
maver...@mavericksolar.com
512-460-9825
On Apr 5, 2025, at 1:22 PM, Drake Chamberlin via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote:
A Radian 4048 disconnected from the grid with a high grid voltage error
showing on the Mate 3. The Mate 3 was displaying a voltage of 279 - 280
V. The Mate 3 was replaced with another Mate 3, and the high voltage
reading remained.
When the voltage was checked with two separate multi meters, the
readings came out to 249 - 250 V. I believe that the 249 - 250 volt
reading is correct.
The incorrect, high voltage reading seems to be coming for the
inverter, not the Mate 3, since two Mates were used.
Has anyone experienced this?
What could be the cause and solution to the problem?
Thank you,
Drake
Drake Chamberlin
Athens Electric LLC
OH Electrical Contractor License 44810
NABCEP Certified Solar PV Installation Professional
740-856-9648
--
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Mac Lewis
"Yo solo sé que no sé nada." -Sócrates
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