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 01 error code
Fan 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.
Likely causes
- Fan obstructed by dust, insects or a foreign object
- Fan bearing seized or fan worn out
- Fan lead unplugged or damaged
- Fan drive circuit faulty
Checks to run, in order
- 1Power down, remove the fan grille and inspect the blades for obstruction and dust build-up
- 2Turn the blade by hand to feel for a seized bearing
- 3Check the fan lead and connector on the control board
- 4Restart and watch the fan during the power-on self-test
Fixes
- Clear the obstruction and clean the fan and grille
- Reconnect a loose fan lead
- Replace the fan
When to escalate
If a replacement fan still does not run and code 01 returns, the fan drive circuit is faulty — send the unit to the distributor's service centre.
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 01 mean?
Fan 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.
How do I fix SMS Sunmate Solar 01?
Clear the obstruction and clean the fan and grille Reconnect a loose fan lead Replace the fan
When should I escalate SMS Sunmate Solar 01?
If a replacement fan still does not run and code 01 returns, the fan drive circuit is faulty — send the unit to the distributor's service centre.
Can I reset SMS Sunmate Solar 01 myself?
Only after isolating the AC and DC sides and running the checks above. If SMS Sunmate Solar 01 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 01?
SMS Sunmate Solar 01 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 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).
- 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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