SPF 3000TL LVM-ES / SPF 3500–5000 ES Lite off-grid (fault codes 01–81)
Growatt 01 error code
Fan is locked (displayed as F01 on the SPF ES Lite).
Likely causes
- Fan obstructed by dust, debris or a foreign object
- Fan bearing seized or fan failed
- Fan connector loose on the control board
Checks to run, in order
- 1Check whether all fans are working properly when the inverter is on
- 2Inspect the fan blades and housing for obstruction
- 3Check the fan connector on the board
- 4Compare fan behaviour with the audible alarm (3 beeps per second)
Fixes
- Clear the obstruction and clean the fan
- Replace the failed fan
- Restart the inverter and confirm the fan runs
When to escalate
If a replacement fan still reports locked, ask Growatt service to check the fan drive circuit.
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 Growatt 01 mean?
Fan is locked (displayed as F01 on the SPF ES Lite).
How do I fix Growatt 01?
Clear the obstruction and clean the fan Replace the failed fan Restart the inverter and confirm the fan runs
When should I escalate Growatt 01?
If a replacement fan still reports locked, ask Growatt service to check the fan drive circuit.
Can I reset Growatt 01 myself?
Only after isolating the AC and DC sides and running the checks above. If Growatt 01 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Growatt 01?
Growatt 01 is documented for SPF 3000TL LVM-ES / SPF 3500–5000 ES Lite off-grid (fault codes 01–81). Confirm the code on your own unit's display or manual before ordering parts.
More Growatt error codes
- Growatt 02Internal component temperature is over 100 °C (F02 on the ES Lite).
- Growatt 03Battery is over-charged / battery voltage is too high (F03 on the ES Lite).
- Growatt 04Battery voltage low.
- Growatt 05Output is short-circuited (F05 on the ES Lite).
- Growatt 06Output voltage is too high. The manual groups 06/58 as 'output abnormal' — inverter voltage above 150 Vac or below 40 Vac.
- Growatt 07Overload time out — the inverter carried over 110% load until its overload timer expired (F07 on the ES Lite).
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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