How do I fix BMS Lost -- Battery Comms on a SolaX?

Check the comms cable is seated at the inverter BAT port and the battery BMS port. Then: Check battery type setting on LCD matches the installed battery.

SolaX

IE 19

BMS Lost -- Battery Comms

Communication between inverter and battery BMS lost. G4-series equivalent of C1 CAN.

Common causes

CAN cable loose or damagedWrong battery type settingBattery powered down

What to check

STEP 1

Check the comms cable is seated at the inverter BAT port and the battery BMS port.

STEP 2

Check battery type setting on LCD matches the installed battery.

Escalate if

After all steps -- provide inverter SN, battery SN and firmware versions

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