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 02 error code
Over-temperature: internal component temperature above 100 °C, or converter temperature above 120 °C.
Likely causes
- Blocked air intake or exhaust vent
- Dust-clogged fan filter or heatsink
- Ambient temperature too high or unit in direct sun
- One or more cooling fans not running
- Sustained overload heating the unit
Checks to run, in order
- 1Check the air path and filter for dust and obstruction
- 2Measure the ambient temperature around the unit
- 3Confirm every fan spins while the unit is loaded
- 4Compare the connected load with the inverter rating
Fixes
- Clear the vents and clean the dust filter (the manual calls for monthly cleaning of the dust kit)
- Move the unit to a cooler, shaded, well-ventilated position
- Reduce the load and let the unit cool before restarting
When to escalate
If code 02 returns at normal load in an ambient below 40 °C after cleaning, the temperature sensor or fan drive needs service.
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 02 mean?
Over-temperature: internal component temperature above 100 °C, or converter temperature above 120 °C.
How do I fix SMS Sunmate Solar 02?
Clear the vents and clean the dust filter (the manual calls for monthly cleaning of the dust kit) Move the unit to a cooler, shaded, well-ventilated position Reduce the load and let the unit cool before restarting
When should I escalate SMS Sunmate Solar 02?
If code 02 returns at normal load in an ambient below 40 °C after cleaning, the temperature sensor or fan drive needs service.
Can I reset SMS Sunmate Solar 02 myself?
Only after isolating the AC and DC sides and running the checks above. If SMS Sunmate Solar 02 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 02?
SMS Sunmate Solar 02 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 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).
- SMS Sunmate Solar 07Overload timeout: the inverter has been loaded above 110% of its rating and the overload timer has expired, so the output is switched off.
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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