The BMS runs a full charge cycle, which can take hours depending on battery size and charging source.
If the system keeps “calculating” for days, it may have gone into a loop and needs a restart.
To reset, disconnect the 240V input, unplug the green connector, unbolt the battery sensor, wait a minute, then reconnect everything in reverse order. After this, the BMS should calculate normally.
REDARC recommends seeking the support of a qualified auto electrician or technician.
Important
For your safety, REDARC recommends installation by a qualified auto electrician or technician. Our trusted REDNetwork is made up of professional auto electrical businesses certified by REDARC to install the complete of REDARC solutions. Find Your Local Installer
This should only happen when first connected (or if the auxiliary battery has been disconnected and re-connected). When this happens, the BMS will put the battery through a full charge cycle. Depending on the battery’s size and SOC (state of charge), this could take quite a few hours (even longer if the BMS only has a small solar panel as its charging source). If it keeps calculating for days, it is possible the BMS has got into a loop & needs a restart (much like a mobile phone that needs to be switched off/on).
Important
In this article we explain the need for testing to determine the cause of the issue. Testing may involve changes to the installation or wiring. For your safety and accuracy, REDARC recommends engaging a REDNetwork member or a suitably qualified auto electrician - Find Your Local Installer
To do this:
- Disconnect the 240V input.
- Unplug the green plug from the BMS main unit (there is a securing screw each end).
- Unbolt the battery sensor. This is the red plastic block with a brass tab, bolted to aux battery positive terminal.
- Leave for at least 1 minute.
- Reconnect in reverse order: Bolt the red battery sensor on, then plug in and secure the green plug, then connect to 240V.
- The BMS should complete calculating quickly.
