Checklists by equipment
2 lists · 11 items · 17 photosVRF system maintenance checklists
VRF system maintenance checklists for the quarterly and annual rounds: 2 free lists, 11 items and 17 photo requirements, each item naming what to look for and the photo that proves it. Work is commonly verified against IMC (mechanical code); the edition in force is the AHJ's call on each project.
The VRF system rounds
VRF system QuarterlyVRF system quarterly maintenance checklistOutdoor unit, branch controllers and indoor heads walked with a controls and network check on the quarterly round5 items8 photosVRF system AnnualVRF system annual maintenance checklistCoils deep-cleaned, branch-controller condensate serviced, line insulation inspected and leak detection tested on the annual6 items9 photos
Where each walk sits in the schedule
- VRF system quarterly maintenance checklistquarterly
- Every quarter, and ahead of each cooling and heating season since the same system runs both ways and one dropped head is easy to miss on a walk. Run by: The HVAC tech on the quarterly round, working from the outdoor unit down through the branch controllers to a sample of indoor heads.
- VRF system annual maintenance checklistannual
- Once a year, the pass that reaches the fouling on the coils and blower wheels, opens the branch controllers, walks the full refrigerant-line insulation and functionally tests the leak detection the quarterly only eyeballs. Run by: The VRF service tech on the annual, with sections isolated as needed and the manufacturer's service tool on the system.
What most often fails on a VRF system
- One indoor head's filter loads and the space complaint gets chased at the thermostat, because on a big system a few heads always get skipped when their rooms are occupied.
- A branch controller's condensate drain clogs above a ceiling and stains the tile below, since the boxes get walked past as 'no moving parts' on the round.
- A head shows offline on the central controller and nobody notices, so the system runs with a gap until the room finally calls it in.
- Outdoor coils rinsed from one face while the packed dirt in the multi-slab coil stays, so head pressure climbs and the system derates on the hottest days.
- Refrigerant-line insulation split or missing at a long horizontal run or a wall penetration, left because tracing the whole route is tedious, so the exposed line sweats and drips inside the ceiling.
- Leak-detection sensors assumed good on their power light and never bump-tested or calibrated, so a sensor that has drifted or failed gives no warning in a room that needs one.
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 VRF system maintenance rounds do these checklists cover?
- VRF system quarterly maintenance checklist (quarterly): Every quarter, and ahead of each cooling and heating season since the same system runs both ways and one dropped head is easy to miss on a walk. VRF system annual maintenance checklist (annual): Once a year, the pass that reaches the fouling on the coils and blower wheels, opens the branch controllers, walks the full refrigerant-line insulation and functionally tests the leak detection the quarterly only eyeballs.
- Who runs the VRF system maintenance round?
- The HVAC tech on the quarterly round, working from the outdoor unit down through the branch controllers to a sample of indoor heads. The VRF service tech on the annual, with sections isolated as needed and the manufacturer's service tool on the system.
- What most often fails on a VRF system?
- One indoor head's filter loads and the space complaint gets chased at the thermostat, because on a big system a few heads always get skipped when their rooms are occupied. A branch controller's condensate drain clogs above a ceiling and stains the tile below, since the boxes get walked past as 'no moving parts' on the round. A head shows offline on the central controller and nobody notices, so the system runs with a gap until the room finally calls it in. Outdoor coils rinsed from one face while the packed dirt in the multi-slab coil stays, so head pressure climbs and the system derates on the hottest days.
- Which standards is VRF system work verified against?
- IMC (mechanical code), published by the International Code Council. 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 (11 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.