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Growatt · PV inverters · Growatt MOD TL3-X (three-phase grid inverter, 3–15 kW)

Error 202The DC input voltage is exceeding the maximum tolerable value

Name in the manufacturer's documentation (user manual): The DC input voltage is exceeding the maximum tolerable value[1]

In plain words (editorial)

The DC voltage coming from the PV strings is higher than the inverter can tolerate. The manual says to disconnect the DC switch immediately and have the voltage checked.

When to call a service technician: DC string voltage is checked by the installer; if the code stays after the voltage is normal, contact the manufacturer.

✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.

The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →

Sources

Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.

  1. [1] Installation & Operation Manual – MOD 3–15KTL3-X (GR-UM-212-A-05, AU ed. 2021-12) (GR-UM-212-A-05) , p. 27 official manufacturer document quote verified Error 202 The DC input voltage is exceeding the maximum tolerable value
  2. [2] Installation & Operation Manual – MOD 3–15KTL3-X (GR-UM-212-A-05, AU ed. 2021-12) (GR-UM-212-A-05) , p. 27 official manufacturer document quote verified Immediately disconnect the DC switch and check the voltage
  3. [3] Installation & Operation Manual – MOD 3–15KTL3-X (GR-UM-212-A-05, AU ed. 2021-12) (GR-UM-212-A-05) , p. 27 official manufacturer document quote verified If the fault code still exists after the normal voltage is restored, contact manufacturer