IS-INV-29900-3PH (AS4777-2 2020)

This warranty covers parts for 2 years, with a free extension available. Exclusions include voiding due to improper installation or modifications, and claims can be made by contacting customer support.

AI-summarised from the manufacturer warranty document. Always confirm against the linked PDF before relying on it for a claim.

Coverage shape

Full-replacement coverage

If you sell the home

Does not transfer with the home

What voids it

Non-accredited installation, modifications, improper input voltage beyond specifications

Environment limits

Operating temperature range: -25 ~ +60 °C (Derating above 45 °C @ Rated output power)

Showing 9 of 9. The official install manual is the authoritative source — always confirm before acting.

• 2001criticalCall your installer

  Manual (PDF)

  High string input voltage

  Likely cause

  The PV array is not properly configured. Excessive PV modules are connected in series to the PV string, and therefore the PV string open-circuit voltage exceeds the maximum inverter operating voltage.

  What to do

  Reduce the number of PV modules connected in series to the PV string until the PV string open-circuit voltage is less than or equal to the maximum inverter operating voltage.

• 2002criticalCall your installer

  Manual (PDF)

  DC arc fault

  Likely cause

  The PV string power cables arc or are in poor contact.

  What to do

  Check whether the PV string cables arc or are in poor contact.

• 2009criticalCall your installer

  Manual (PDF)

  String Short-Circuited to Ground

  Likely cause

  The PV array is short-circuited to ground. The ambient environment of PV arrays is moist.

  What to do

  Check the output-to-ground impedance of the PV array. If a short circuit or inadequate insulation is detected, rectify it.

• 2011criticalCall your installer

  Manual (PDF)

  String reverse connection

  Likely cause

  The PV string polarity is reversed.

  What to do

  Check whether the PV string is connected to the device in reverse polarity. If yes, wait until the PV string current decreases to below 0.5 A, set DC SWITCH to OFF, and adjust the PV string polarity.

• 2013critical

  Manual (PDF)

  Grid loss

  Likely cause

  Power grid outage occurs. The AC circuit is disconnected or the AC switch is off.

  What to do

  Check whether the AC circuit is disconnected or the AC switch is off.

• 2021criticalCall your installer

  Manual (PDF)

  AFCI self-check failure

  Likely cause

  The AFCI self-check fails.

  What to do

  Turn off the AC output switch and DC input switch, and then turn them on after 5 minutes. If the alarm persists, contact ISTORE technical support.

• 2031criticalCall your installer

  Manual (PDF)

  Phase wire short-circuited to PE

  Likely cause

  The impedance of the output phase wire to PE is low or the output phase wire is short-circuited to PE.

  What to do

  Check the impedance of the output phase wire to PE, locate the position with low impedance, and rectify the fault.

• 2062criticalCall your installer

  Manual (PDF)

  Low insulation resistance

  Likely cause

  The PV array is short-circuited with PE. The PV string has been in a moist environment for a long time and the circuit is not well insulated to ground.

  What to do

  Check the impedance between the PV string and the PE cable. If a short circuit occurs, rectify the fault.

• 2012warning

  Manual (PDF)

  String current backfeed

  Likely cause

  The number of PV modules connected in series to the PV string is insufficient. As a result, the terminal voltage is lower than that of other strings.

  What to do

  Check whether the number of PV modules connected in series to the PV string is less than that of other PV strings. If yes, wait until the PV string current drops below 0.5 A, turn off all DC switches, and adjust the number of PV modules in the PV string.