W52Warning

Felicity inverter error W52

BMS doesn't allow inverter to discharge battery

Warningthe red LED flashes and the inverter keeps running. Deal with it before it escalates.

The exact meaning depends on your model:

IVEM 6048

InverterWarning

Also applies to:IVEM6048

What it means

BMS doesn't allow inverter to discharge battery

Cause: BMS has prohibited discharging.

How to fix it

Inverter will stop discharging battery automatically.

Source: felicitysolar IVEM 6048 Solar Inverter User Guide.pdf, p.36

IVEM8048-II

InverterWarning

Also applies to:IVEM12048-IIIVEM 8K-12K Series II

What it means

BMS doesn't allow inverter to discharge batteryWarning: BMS doesn't allow inverter to discharge battery. Inverter will stop discharging battery automatically.

Cause: BMS has prohibited discharging the battery.

How to fix it

Inverter will stop discharging battery automatically.

Source: IVEM8K-12K-II_compressed.pdf, p.42

IVEM8048-LV

InverterWarning

Also applies to:IVEM8048

What it means

BMS doesn't allow inverter to discharge battery

Cause: BMS has blocked discharging.

How to fix it

Inverter will stop discharging battery automatically.

Source: FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf, p.37

T-REX-10KHP3G01

InverterWarning

What it means

BMS require inverter to charge batteryBMS requires the inverter to charge the battery.

Cause: The battery's BMS has requested charging over the communication link — the pack needs energy, and the inverter starts charging automatically.

How to fix it

Inverter will charge battery automatically.

Source: T-REX-10KHP3G01-Inverter-User-Guide.pdf, p.27

T-REX-10KLP3G01

InverterWarning

Also applies to:Apollo-5KLP1G01-MXApollo-5KLP1G01-M1Apollo-5KLP1G01-M2Apollo-4K6LP1G01-MXApollo-4K6LP1G01-M1Apollo-4K6LP1G01-M2

What it means

BMS require inverter to charge batteryBMS requires inverter to charge battery; inverter will charge battery automatically.

Cause: BMS require inverter to charge battery.

How to fix it

Inverter will charge battery automatically.

Source: T-REX-10KLP3G01-Inverter-User-Guide.pdf, p.27 · Apollo-5KLP1G01-All-in-one-ESS-User-Guide.pdf, p.42

Frequently asked questions

What does error W52 mean on a Felicity inverter?
It depends on the model — 6 devices use code W52. On the IVEM 6048 it means: BMS doesn't allow inverter to discharge battery. The card for each model on this page gives its exact meaning and fix.
Is error W52 a fault or a warning?
W52 is a warning: the red LED flashes and the unit keeps running. Fix the underlying condition before it escalates.
How do I clear or fix error W52?
Inverter will stop discharging battery automatically. The exact steps for each affected model are listed on this page.

Related error codes

Prefer the full written guide? Read the complete Felicity inverter error-code guide

Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.