Inverter Replacements — Field Documentation¶

EXPANDING

When is Inverter Replacement Required?¶

• Persistent hardware fault not resolved by reset or troubleshooting
• Physical damage (water ingress, arc damage, mechanical damage)
• System out of warranty with repair cost exceeding replacement
• Upgrade for capacity or feature reasons

Pre-Replacement Checklist¶

• [ ] Confirm fault is inverter hardware (not optimizer, string, or grid issue)
• [ ] Obtain warranty status from manufacturer portal (inverter serial number required)
• [ ] If under warranty: initiate RMA before purchasing replacement
• [ ] If out of warranty: confirm replacement model compatibility with existing system
• [ ] Notify client: expected downtime, estimated cost, scope
• [ ] Backup inverter configuration data if accessible

Replacement Procedure (General)¶

1. Isolate system per Lockout / Tagout
2. Verify zero voltage on all DC and AC terminals
3. Photograph all wiring before disconnecting — especially DC string inputs, communication wiring
4. Label all wires before removal if not already labeled
5. Remove old inverter — note mounting pattern for new unit
6. Install new inverter — verify mounting is secure
7. Reconnect wiring — per your labeled/photographed reference
8. Communication wiring — reconnect RS485, Ethernet, or other comms
9. Commission new inverter — via SolarEdge GO (or SetApp on legacy), or manufacturer app
10. Verify production — confirm strings reporting, system producing
11. Documentation — serial numbers (old and new), photos, GO commissioning screenshots

Warranty Notes¶

• SolarEdge residential inverters: 12-year standard, 25-year extended
• SMA residential: 10-year standard
• Enphase microinverters: 25-year standard
• Warranty may transfer or may require homeowner registration

Documentation Required¶

Documented Cases¶

Specific inverter replacement cases to be documented here.

Related¶

• Lockout / Tagout
• SolarEdge Inverters
• GO Commissioning Workflows
• SetApp Legacy Reference