HESP series hybrid inverters (single-phase 4-12 kW and three-phase 8-12 kW)
SRNE 14 error code
Inverter overload protection (OverloadInverter): output power or current stayed above the inverter rating for the permitted time.
Likely causes
- Site load above the inverter continuous rating
- Several large appliances starting together
- Output short or partial fault on one circuit
- High ambient temperature reducing available output
Checks to run, in order
- 1Clamp the output current per phase and compare it with the rated output
- 2Apply the manual's overload curve: single-phase 102-110 percent for 5 minutes, 110-125 percent for 10 s, above 125 percent for 5 s; three-phase 102-125 percent for 5 minutes, 125-150 percent for 20 s, above 150 percent for 10 s
- 3Check the inverter ambient temperature and clearance
- 4Isolate circuits one by one to find a faulty appliance
Fixes
- Reduce the load and restart to resume output
- Stagger the starting of heavy loads
- Improve ventilation around the unit if it derates in hot weather
When to escalate
If the inverter trips at a load clearly below its rating, the distributor should check the output current sensor and overload calibration.
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 14 mean?
Inverter overload protection (OverloadInverter): output power or current stayed above the inverter rating for the permitted time.
How do I fix SRNE 14?
Reduce the load and restart to resume output Stagger the starting of heavy loads Improve ventilation around the unit if it derates in hot weather
When should I escalate SRNE 14?
If the inverter trips at a load clearly below its rating, the distributor should check the output current sensor and overload calibration.
Can I reset SRNE 14 myself?
Only after isolating the AC and DC sides and running the checks above. If SRNE 14 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show SRNE 14?
SRNE 14 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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