HESP series hybrid inverters (single-phase 4-12 kW and three-phase 8-12 kW)
SRNE 32 error code
Battery capacity low stop (BatCapacityLowStop): the inverter stops discharging because the BMS reported the battery capacity as critically low.
Likely causes
- Battery at the BMS stop-discharge SOC
- Extended grid outage with no PV
- BMS protection active
- Battery capacity or wiring inadequate for the load
Checks to run, in order
- 1Read SOC and BMS protection status
- 2Check battery voltage and whether the BMS has opened discharge
- 3Confirm PV and grid charging are available
- 4Review the outage duration and load
Fixes
- Charge the battery until the BMS clears the stop condition
- Restart the inverter after charging
- Reduce the depth of discharge by shedding non-essential load
When to escalate
If the inverter stops at a high SOC, the distributor should verify the BMS protocol and SOC thresholds against the battery datasheet.
Fix it with the right tools
Check the system around the fault before replacing parts: load, battery bank, PV string and commissioning settings. If you need a second opinion, send the code and your inverter model to our team.
Before you open the inverter
- Isolate both the AC and DC sides, then confirm the display is dead before touching terminals.
- Use insulated tools and one hand where possible. DC arcs do not self-extinguish like AC.
- If you see burnt terminals, swollen cells, leaking electrolyte or a burning smell, stop and escalate instead of resetting the fault.
Questions installers ask
What does SRNE 32 mean?
Battery capacity low stop (BatCapacityLowStop): the inverter stops discharging because the BMS reported the battery capacity as critically low.
How do I fix SRNE 32?
Charge the battery until the BMS clears the stop condition Restart the inverter after charging Reduce the depth of discharge by shedding non-essential load
When should I escalate SRNE 32?
If the inverter stops at a high SOC, the distributor should verify the BMS protocol and SOC thresholds against the battery datasheet.
Can I reset SRNE 32 myself?
Only after isolating the AC and DC sides and running the checks above. If SRNE 32 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show SRNE 32?
SRNE 32 is documented for HESP series hybrid inverters (single-phase 4-12 kW and three-phase 8-12 kW). Confirm the code on your own unit's display or manual before ordering parts.
More SRNE error codes
- SRNE 01Battery undervoltage alarm: the battery voltage has fallen below the [Batt. Under volt. alarm] value under Battery Setup, and the alarm does not by itself stop the output.
- SRNE 02Battery discharge average current overcurrent, detected by software (BatOverCurrSw); the inverter limits or stops discharge.
- SRNE 03Battery not connected (BatOpen): the inverter cannot see a battery on the DC side and stops the output.
- SRNE 04Battery undervoltage stop-discharge (BatLowEod): the battery has reached the low-voltage cut-off and the inverter has stopped discharging.
- SRNE 05Battery overcurrent detected by hardware protection (BatOverCurrHw); the inverter shuts the output down.
- SRNE 06Charging overvoltage protection (BatOverVolt): battery voltage rose above the over-voltage cut-off and charging was stopped.
Guidance reviewed 17 October 2026 by the Mishka Energy installer team. Error codes vary by brand, model family and firmware; confirm against the manufacturer manual.
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