Inverter Fault Investigation
Liam O’Connor
10 February 2026
Summary
Investigated inverter showing string fault; temporary fix applied while awaiting quote approval.
Areas Inspected
Inverter
INTERVENTION REQUIRED- String fault
- Heat-discoloured isolator contacts
Showing string fault, investigated and found isolator contacts heat-discoloured.
Solar panels
OKInspected, to be monitored by Liam.
Battery storage
OKChecked during site visit, no issues found.
Actions Done On Site
- Checked solar panels, inverter, battery storage
- Tested strings and isolated faulted isolator
- Applied temporary fix
Actions for Service Provider
- Send quote for new PV inverter and DC isolator replacement
Actions for Client
- Monitor solar panels over the next week
Quote Required
Replacement of faulty inverter and isolator.
| Item | Quantity | Priority |
|---|---|---|
| New PV inverter | 1 | Medium |
| DC isolator replacement | 1 | Medium |
Invoice Items
Services rendered today including call-out and labor.
| Item | Quantity |
|---|---|
| Call-out fee and 1 hour of labour | 1 |
| MC4 connectors | 1 |
Photos
