HESP series hybrid inverters (single-phase 4-12 kW and three-phase 8-12 kW)
SRNE 61 error code
BMS battery over-temperature alarm: the BMS reports the battery temperature above its high-temperature limit.
Likely causes
- High ambient temperature in the battery room
- Sustained high charge or discharge current
- Blocked ventilation around the battery
- BMS temperature sensor fault
Checks to run, in order
- 1Read battery temperature and cell temperatures from the BMS
- 2Measure the ambient temperature at the battery
- 3Check charge/discharge current against the battery rating
- 4Check ventilation and clearance
Fixes
- Reduce charge/discharge current and improve ventilation
- Cool the room and allow the pack to return to normal temperature
- Do not keep charging a hot pack
When to escalate
Over-temperature can indicate a cell problem; if it recurs at low current, stop using the pack and have the distributor inspect it with the BMS factory.
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 61 mean?
BMS battery over-temperature alarm: the BMS reports the battery temperature above its high-temperature limit.
How do I fix SRNE 61?
Reduce charge/discharge current and improve ventilation Cool the room and allow the pack to return to normal temperature Do not keep charging a hot pack
When should I escalate SRNE 61?
Over-temperature can indicate a cell problem; if it recurs at low current, stop using the pack and have the distributor inspect it with the BMS factory.
Can I reset SRNE 61 myself?
Only after isolating the AC and DC sides and running the checks above. If SRNE 61 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show SRNE 61?
SRNE 61 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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