LED DownlightsRetrofit Kit
Halo ML5615LSVWFL9FSE010 LED Downlight Manual
Setup, everyday use, maintenance and troubleshooting for the 4 in. LED downlight retrofit kit, with verified specifications.
- Light output1,400 lumens
- Power16 W
- Efficacy87.5 lm/W
- Color temp.2700–5000K (selectable)
About the Halo ML5615LSVWFL9FSE010
The Halo ML5615LSVWFL9FSE010 is a 4 in. LED downlight retrofit kit certified under the ENERGY STAR program for light fixtures. It produces 1,400 lumens from 16 W of input power, an efficacy of 87.5 lumens per watt. That efficacy is better than 54% of the 614 Retrofit Kit models in our database.
Light quality: the fixture offers selectable color temperatures of 2700K, 3000K, 3500K, 4000K, or 5000K and a color rendering index of 93, which renders skin tones, wood and fabrics accurately.
Notable features include continuous dimming (0–10 V supported). The rated light-source life is 55,000 hours.
Specifications
| Brand | Halo |
|---|---|
| Model number | ML5615LSVWFL9FSE010* |
| Fixture type | Retrofit Kit |
| Nominal size / aperture | 4 in. |
| Light output | 1,400 lumens |
| Input power | 16.0 W |
| Efficacy | 87.5 lm/W |
| Color temperature(s) | 2700K, 3000K, 3500K, 4000K, 5000K |
| Color rendering index (CRI) | 93 |
| Rated light-source life | 55,000 hours |
| Power factor | 1.00 |
| Continuously dimmable | Yes |
| Dimming control | 0–10 V |
| Indoor / outdoor use | Indoor/Outdoor |
| Electrical connection | E26 screw-in adapter, GU24 twist-lock adapter |
| Tunable / selectable white | Yes |
| Full-color tunable | No |
| Selectable light output | No |
| Occupancy sensor | No |
| Connected (smart) capable | No |
Safety information
- Turn off power at the circuit breaker — not just the wall switch — before installing, removing or servicing the fixture, and confirm the circuit is dead with a non-contact voltage tester.
- Installation must comply with the National Electrical Code (NEC) or Canadian Electrical Code (CEC) and local codes. Many jurisdictions require a licensed electrician and a permit for new fixture locations or new wiring; if you are not comfortable with household wiring, hire one.
- Use only the junction box, housing, or mounting hardware specified in the installation instructions, and do not exceed the box-fill limits of the junction box.
- Install the fixture only on a circuit whose voltage matches the label, and never modify the LED driver or module.
- Connect dimmable fixtures only to dimmers the manufacturer lists as compatible, and keep the total connected LED load within the dimmer's LED rating (often much lower than its incandescent rating).
Installation and first-time setup
A retrofit kit installs into an existing recessed housing (can) and replaces the old lamp and trim. This kit is sized for 4 in. housings; measure the inside diameter of your can before buying, because sizes are nominal.
- Turn off power
Switch off the breaker feeding the circuit and verify with a voltage tester. Let any old incandescent or halogen lamp cool before touching it.
- Remove the old lamp and trim
Unscrew the existing bulb, then pull down the old trim and unhook its springs or clips from the housing.
- Connect the adapter
Screw the kit's E26 adapter into the existing lamp socket (or use the GU24 adapter if your housing has a GU24 socket), then plug the adapter lead into the connector on the LED module.
- Set the options first
Choose the color temperature with the selector on the module or driver before installing — it is hard to reach once the trim is up. Then tuck the leads up into the housing so they are not pinched.
- Attach and push up the trim
Fit the torsion springs into the housing's receivers or let the friction clips grip the can wall, then push the trim up until it sits flush with the ceiling.
- Restore power and test
Turn the breaker back on and test the fixture across the full dimmer range.
Using your downlight
Dimming
The fixture dims continuously. In addition to phase-cut (wall-box) dimming where supported, the certification data lists 0–10 V dimming. Check the manufacturer's compatibility list: most LED drivers work best with trailing-edge (ELV) or LED-rated dimmers, and some dimmers have a low-end trim adjustment that stops flicker at the bottom of the range.
0–10 V dimming uses a separate pair of low-voltage control wires (usually purple and gray, or purple and pink) run to a 0–10 V dimmer or lighting controller. Keep the control wiring separated from line-voltage conductors as the instructions and code require.
Choosing a color temperature
This fixture can be set to 2700K, 3000K, 3500K, 4000K, or 5000K. Set every fixture in a room to the same setting — mismatched color temperatures are very noticeable.
| Setting | Appearance | Typical use |
|---|---|---|
| 2700K | Warm white, similar to incandescent | Living rooms, bedrooms, dining areas |
| 3000K | Soft warm white, similar to halogen | Kitchens, living spaces, hospitality |
| 3500K | Neutral warm | Kitchens, retail, offices |
| 4000K | Neutral / cool white | Offices, laundry rooms, garages |
| 5000K | Cool white, daylight-like | Workshops, garages, task areas |
Light output and placement
At 1,400 lumens, this is a bright fixture for kitchens, work areas, commercial spaces and ceilings up to about 10–12 ft. LED fixtures reach full brightness instantly and are not shortened by frequent switching.
Care and maintenance
| When | What to do |
|---|---|
| Every 3–6 months | Dust the trim and lens with a soft, dry microfiber cloth with the light off and cool. Do not spray cleaner directly onto the fixture. |
| Every year | Check that the trim still sits flush and the springs or clips hold it firmly. A sagging trim can leave a gap that lets attic air leak. |
| When cleaning greasy kitchens | Wipe the lens with a cloth dampened in mild soapy water, then dry it. Avoid solvents and abrasive pads, which can cloud the lens. |
The integrated LEDs are not user-replaceable bulbs. The rated light-source life of 55,000 hours works out to roughly 50 years at 3 hours a day, or about 13 years at 12 hours a day. Over time the LEDs gradually dim rather than burning out; when output becomes too low, or if the driver fails, replace the fixture or LED module as the manufacturer directs.
Troubleshooting
Most downlight problems trace back to dimmer compatibility or wiring connections. Always turn off the breaker before opening the fixture or the junction box.
| Problem | Possible cause | What to try |
|---|---|---|
| Light does not turn on | Breaker off or tripped; loose wire connection; switch or dimmer failure. | Check the breaker; with power off, confirm connections in the junction box are tight; test with a standard switch. |
| Flickers or buzzes when dimmed | Dimmer not compatible with the LED driver; dimmer low-end trim set too low; too many or too few fixtures on the dimmer. | Use a dimmer on the manufacturer's compatibility list; adjust the dimmer's low-end trim; keep the load within the dimmer's LED rating. |
| Faint glow when switched off | Illuminated or smart switch leaking a small current; shared neutral wiring issue. | Try a standard switch; use a smart switch that has a neutral connection; have an electrician check the wiring. |
| Does not dim smoothly or turns off at low settings | Dimmer range not matched to the driver. | Raise the dimmer's minimum setting; consult the dimmer and fixture compatibility notes. |
| Color looks different from the other fixtures | Color-temperature selector set differently from neighboring fixtures. | Turn off power, check the selector setting and match it to the other fixtures. |
| Trim falls or hangs below the ceiling | Springs or clips not engaged; opening cut too large. | Reseat the springs in the receivers; use a trim with a wider flange or repair the drywall. |
| Turns off by itself after running a while | Driver overheating, often from insulation packed around a fixture or a loose connection. | Turn off power and check the installation. Do not cover Non-IC fixtures with insulation; call an electrician if the problem continues. |
Energy use and running costs
The Halo ML5615LSVWFL9FSE010 draws 16 W. Used 3 hours a day — a typical home assumption — it consumes about 17.5 kWh a year, roughly $2.98 per year at an electricity price of $0.17 per kWh. In a commercial space lit 12 hours a day, the same fixture uses about 70 kWh, or $11.91 a year.
Efficacy — lumens of light per watt of electricity — is the best single measure of a fixture's efficiency. This model delivers 87.5 lm/W. That figure is better than 54% of the 614 Retrofit Kit models in our database.
| Daily use | Energy per year | Cost per year |
|---|---|---|
| 1 hour | 5.8 kWh | $0.99 |
| 3 hours | 17.5 kWh | $2.98 |
| 6 hours | 35.0 kWh | $5.96 |
| 12 hours | 70.1 kWh | $11.91 |
The listed power factor is 1, high enough that the fixture draws current efficiently from the supply — useful in commercial buildings with many fixtures on one circuit.
Dimming reduces power roughly in proportion to light output.
Frequently asked questions
How bright is the Halo ML5615LSVWFL9FSE010?
It is rated at 1,400 lumens while drawing 16 W, for an efficacy of 87.5 lumens per watt.
Is the Halo ML5615LSVWFL9FSE010 dimmable?
Yes. It is continuously dimmable, and the certification data also lists 0–10 V dimming. Use a dimmer the manufacturer lists as compatible for flicker-free operation.
What color temperature is the Halo ML5615LSVWFL9FSE010?
It is selectable between 2700K, 3000K, 3500K, 4000K, and 5000K. Set the selector before installation.
What size is the Halo ML5615LSVWFL9FSE010?
Its nominal size is 4 in., meaning it is intended for recessed housings of that diameter. Confirm the exact cutout or housing dimensions in the manufacturer's installation sheet before purchasing.
How much does it cost to run the Halo ML5615LSVWFL9FSE010?
At 3 hours a day and $0.17/kWh, it costs about $2.98 a year to operate.
Sources and disclaimer
Specifications on this page come from the ENERGY STAR certified led downlights dataset published by the U.S. Environmental Protection Agency (record certified December 23, 2024), retrieved October 7, 2026.
The setup, operating, maintenance and troubleshooting guidance is written by ManualHarbor's editors for this specific product type and configuration. It is an independent guide — not a reproduction of the manufacturer's manual — and ManualHarbor is not affiliated with Halo. Always follow the safety instructions, installation requirements and warranty terms supplied with your unit, and contact Halo or an authorized service provider for warranty repairs and replacement parts.
Running-cost figures use assumed U.S. average utility prices and are estimates for comparison only. See our editorial methodology for details.
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