HESP series hybrid inverters (single-phase 4-12 kW and three-phase 8-12 kW)
SRNE 45 error code
Error setting of split-phase mode (Item "Parallel" setting error): one unit in the parallel system has the wrong parallel-mode setting.
Likely causes
- Parallel setting wrong on one unit
- Unit replaced and not configured
- Mode changed accidentally during service
Checks to run, in order
- 1Read the parallel mode setting on every unit
- 2Compare with the intended system configuration
- 3Check the unit that was most recently serviced or replaced
Fixes
- Set the same correct parallel mode on every unit
- Restart the stack after the settings match
When to escalate
If the setting will not hold after a restart, the distributor should check the control board parameter storage.
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 45 mean?
Error setting of split-phase mode (Item "Parallel" setting error): one unit in the parallel system has the wrong parallel-mode setting.
How do I fix SRNE 45?
Set the same correct parallel mode on every unit Restart the stack after the settings match
When should I escalate SRNE 45?
If the setting will not hold after a restart, the distributor should check the control board parameter storage.
Can I reset SRNE 45 myself?
Only after isolating the AC and DC sides and running the checks above. If SRNE 45 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show SRNE 45?
SRNE 45 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.
Back to troubleshooting