Free checklist
Solar PV inverter annual maintenance checklist
The annual PV inverter service is the deep pass: the measurements, cleanings and tests a quarterly round doesn't reach. This checklist keeps the full service on record with the photos that make it defensible later. Work is commonly verified against NEC (NFPA 70), manufacturer's published instructions. Confirm the edition your authority having jurisdiction has adopted.
- Items
- 5
- Photos required
- 6
- Built for
- Subcontractors
Who runs it
The PV service tech on the annual service, with an electrician for the de-energized work.
When in the schedule
Once a year, part energized for the thermal scan and part shut down for the connection and disconnect work.
The checklist
Every item, and the photo that proves it
The photo count on each row is what RTI would require before the item can be submitted. Copy the list as is, or load it into RTI and let the gate enforce it.
Connections and heat
- 2 photos
DC and AC terminations scanned then torqued
Terminations imaged under load, then powered down and torqued to the manufacturer's published values, string and combiner lugs included.
Safety systems
- 1 photo
Rapid-shutdown initiated and confirmed
Shutdown triggered and the array measured dropping to a safe voltage, module-level devices responding where fitted.
- 1 photo
AC and DC disconnects operated
Each disconnect opened and closed through its full travel, labeling correct, contacts sound with no arcing signs.
Grounding and enclosure
- 1 photo
Equipment grounding and bonding verified
Ground and bonding connections tight and continuous from the inverter through combiners to the array frames.
- 1 photo
Enclosure sealing and moisture control checked
Gaskets, vents and drains intact, any desiccant renewed where fitted, no water staining inside the enclosure.
What usually sends this back
The failures are almost always the evidence, not the work
- 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.
Run it with the Photo Gate
A checklist nobody can submit half-finished
Load this list into RTI, stick a QR tag on the area it covers, and the submit button stays locked until every mandatory item is answered and the 6 required photos exist. Approved walks roll into a branded turnover package with a tamper-evident record behind every line.
Submission state
The gate is enforced on the server, so it holds even if the phone is offline when the walk happens.
Verified against
Common questions
- What does this solar pv inverter annual checklist cover?
- 5 items across 3 sections, covering connections and heat, safety systems, grounding and enclosure. Each item spells out what the person walking the job is actually looking for, not just a box to tick.
- Who should run this inspection?
- The PV service tech on the annual service, with an electrician for the de-energized work.
- When in the schedule should this walk happen?
- Once a year, part energized for the thermal scan and part shut down for the connection and disconnect work.
- Why does every item ask for a photo?
- 6 of the 5 items call for photo evidence. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.
- What most often fails a solar pv inverter annual inspection?
- 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.
- Can I use this checklist in RTI?
- Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper-evident audit trail.
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