SPH 3000–6000TL BL-UP / SPH 4000–10000TL3 BH-UP hybrid (Error 2xx–6xx codes)
Growatt No Utility error code
No grid supply is detected (warning, not a fault).
Likely causes
- Grid outage
- AC input breaker or isolator open
- Grid connection wiring disconnected
- Generator switched off
Checks to run, in order
- 1Check whether the grid is down in the area
- 2Check the grid connection and AC input breaker
- 3Check that all AC switches between meter and inverter are on
- 4Measure AC voltage at the inverter AC input
Fixes
- Restore grid supply and wait for reconnection
- Close the AC breaker/isolator
- Repair any disconnected AC input wiring
When to escalate
If grid voltage is present at the AC terminals and 'No Utility' persists, ask Growatt support to check the AC input detection.
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 No Utility mean?
No grid supply is detected (warning, not a fault).
How do I fix Growatt No Utility?
Restore grid supply and wait for reconnection Close the AC breaker/isolator Repair any disconnected AC input wiring
When should I escalate Growatt No Utility?
If grid voltage is present at the AC terminals and 'No Utility' persists, ask Growatt support to check the AC input detection.
Can I reset Growatt No Utility myself?
Only after isolating the AC and DC sides and running the checks above. If Growatt No Utility returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Growatt No Utility?
Growatt No Utility is documented for SPH 3000–6000TL BL-UP / SPH 4000–10000TL3 BH-UP hybrid (Error 2xx–6xx codes). Confirm the code on your own unit's display or manual before ordering parts.
More Growatt error codes
- Growatt 01Fan is locked (displayed as F01 on the SPF ES Lite).
- 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.
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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