Anern AN-SCI-EVO OEM series (SMS 2 kVA/12 V, 4.2 kW/24 V, 10.2 kVA/48 V hybrid units)
SMS Sunmate Solar 07 error code
Overload timeout: the inverter has been loaded above 110% of its rating and the overload timer has expired, so the output is switched off.
Likely causes
- Connected load above the inverter rating
- High inrush current from motors, pumps, fridges or air conditioners
- Several large loads starting at the same time
- Inverter undersized for the installation
Checks to run, in order
- 1Total the nameplate watts of everything on the output
- 2Clamp-meter the output current with the normal load running
- 3Switch all loads off, restart, then add loads one at a time and watch the display
- 4Check for a partial short that is presenting as overload
Fixes
- Reduce the connected load by switching off non-essential appliances
- Stagger the start-up of motor and compressor loads
- Move the largest loads to another source or fit a larger inverter
When to escalate
If code 07 trips at less than half the rated load, the current sensing or output stage is faulty and the distributor should bench-test the unit.
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 SMS Sunmate Solar 07 mean?
Overload timeout: the inverter has been loaded above 110% of its rating and the overload timer has expired, so the output is switched off.
How do I fix SMS Sunmate Solar 07?
Reduce the connected load by switching off non-essential appliances Stagger the start-up of motor and compressor loads Move the largest loads to another source or fit a larger inverter
When should I escalate SMS Sunmate Solar 07?
If code 07 trips at less than half the rated load, the current sensing or output stage is faulty and the distributor should bench-test the unit.
Can I reset SMS Sunmate Solar 07 myself?
Only after isolating the AC and DC sides and running the checks above. If SMS Sunmate Solar 07 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show SMS Sunmate Solar 07?
SMS Sunmate Solar 07 is documented for Anern AN-SCI-EVO OEM series (SMS 2 kVA/12 V, 4.2 kW/24 V, 10.2 kVA/48 V hybrid units). Confirm the code on your own unit's display or manual before ordering parts.
More SMS Sunmate Solar error codes
- SMS Sunmate Solar 01Fan failure: the cooling fan is blocked or not turning. The same code appears as a warning when the fan is blocked while the inverter is running.
- SMS Sunmate Solar 02Over-temperature: internal component temperature above 100 °C, or converter temperature above 120 °C.
- SMS Sunmate Solar 03Battery over-voltage: the battery bank is charged above the inverter's high-voltage limit. The same number is also used as a warning (beep once per second) when the battery is overcharged.
- SMS Sunmate Solar 04Battery under-voltage: the bank has discharged below the inverter's low-voltage cutoff. The same number is also used as a low-battery warning (beep once per second).
- SMS Sunmate Solar 05Output short circuit: a short is detected on the AC output.
- SMS Sunmate Solar 06Abnormal output voltage: the inverter output is above 260 V AC (the manual groups 06 and 58 as output voltage outside the 190–260 V AC band).
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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