Checklists by equipment
2 lists · 9 items · 10 photosSolar PV inverter maintenance checklists
Solar PV inverter maintenance checklists for the quarterly and annual rounds: 2 free lists, 9 items and 10 photo requirements, each item naming what to look for and the photo that proves it. Work is commonly verified against NEC (NFPA 70); the edition in force is the AHJ's call on each project.
The solar PV inverter rounds
Solar PV inverter QuarterlySolar PV inverter quarterly maintenance checklistStatus, event log, cooling and side-by-side production checked on the quarterly round4 items4 photosSolar PV inverter AnnualSolar PV inverter annual maintenance checklistConnection torque under thermal scan, rapid-shutdown test and grounding on the annual pass5 items6 photos
Where each walk sits in the schedule
- Solar PV inverter quarterly maintenance checklistquarterly
- Every quarter, energized during daylight so the unit is producing and cooling faults show under real load. Run by: The PV or electrical service tech on the quarterly round.
- Solar PV inverter annual maintenance checklistannual
- Once a year, part energized for the thermal scan and part shut down for the connection and disconnect work. Run by: The PV service tech on the annual service, with an electrician for the de-energized work.
What most often fails on a solar PV inverter
- Green status light taken as healthy while the event log shows repeated ground-fault or arc-fault trips clearing themselves.
- One inverter quietly underproducing next to its neighbors on the same roof, never caught because outputs aren't compared side by side.
- Intake filter blinded with pollen so the unit derates in the afternoon heat and no one connects the derate to the filter.
- Rapid-shutdown assumed working because it was commissioned once, never re-initiated to confirm the array actually drops to a safe voltage.
- DC connectors from different makers mated at a field repair, corroding and heating where the mismatched halves meet.
Verified against
Families only, never clause numbers. Adoption varies by jurisdiction; confirm the edition your authority having jurisdiction enforces before you run a walk against it.
Common questions
- Which solar PV inverter maintenance rounds do these checklists cover?
- Solar PV inverter quarterly maintenance checklist (quarterly): Every quarter, energized during daylight so the unit is producing and cooling faults show under real load. Solar PV inverter annual maintenance checklist (annual): Once a year, part energized for the thermal scan and part shut down for the connection and disconnect work.
- Who runs the solar PV inverter maintenance round?
- The PV or electrical service tech on the quarterly round. The PV service tech on the annual service, with an electrician for the de-energized work.
- What most often fails on a solar PV inverter?
- Green status light taken as healthy while the event log shows repeated ground-fault or arc-fault trips clearing themselves. One inverter quietly underproducing next to its neighbors on the same roof, never caught because outputs aren't compared side by side. Intake filter blinded with pollen so the unit derates in the afternoon heat and no one connects the derate to the filter. Rapid-shutdown assumed working because it was commissioned once, never re-initiated to confirm the array actually drops to a safe voltage.
- Which standards is solar PV inverter work verified against?
- NEC (NFPA 70), published by the National Fire Protection Association. Adoption varies by jurisdiction. Confirm the edition your authority having jurisdiction enforces before you run a walk against it.
- Can I run these checklists in RTI?
- Yes. Start a free RTI workspace and load any of the 2 lists (9 items in total). The Photo Gate holds the submit button until every mandatory item is answered and its photos are attached, and approved inspections roll into a branded turnover package with a tamper-evident audit trail.