Lutron AYF-103P-277-IV
Lutron AYF-103P-277-IV Lighting Dimmer Instruction Manual
Model: AYF-103P-277-IV
Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Lutron AYF-103P-277-IV Lighting Dimmer. The Lutron Ariadni dimmer is designed to provide adjustable lighting levels for enhanced comfort and energy savings. This model is suitable for 3-way applications, allowing control of a single light from two different switch locations. It features a traditional toggle-style switch with a linear slider for precise light level adjustment.
Important Safety Information
- WARNING: To avoid serious injury or death, always turn off power at the circuit breaker or fuse box before wiring.
- This product must be installed in accordance with all national and local electrical codes.
- If you are unsure about any part of these instructions, consult a qualified electrician.
- For use with permanently installed fixtures with dimmable bulbs only.
- Do not use with non-dimmable bulbs or fixtures.
Setup and Installation
The Lutron AYF-103P-277-IV dimmer is designed for straightforward installation, typically taking around 15 minutes. A neutral wire is required for proper operation.
Before You Begin
- Turn off power: Locate the circuit breaker or fuse box controlling the light fixture and turn off the power. Verify power is off by attempting to turn on the light.
- Identify wiring: Carefully remove the existing wallplate and switch. Identify the line (hot), load, neutral, and ground wires. This dimmer supports single-pole or 3-way applications.
- Prepare wires: Strip approximately 1/2 inch (12 mm) of insulation from each wire if necessary.
Wiring Instructions
Refer to the wiring diagram provided with your dimmer for specific connections. General steps are as follows:
- Connect the green ground wire from the dimmer to the bare copper or green ground wire in the wall box.
- Connect the white neutral wire from the dimmer to the neutral wire in the wall box (typically white).
- Connect the black line (hot) wire from the dimmer to the incoming power wire.
- Connect the red load wire from the dimmer to the wire going to the light fixture.
- For 3-way applications, connect the remaining traveler wire(s) as per the specific 3-way wiring diagram.

Image Description: This image shows the rear view of the Lutron AYF-103P-277-IV dimmer switch, highlighting the wiring terminals and labels. Text on the dimmer indicates "Up" for orientation, "For use with permanently installed fixtures with dimmable bulbs only," and "Assembled: Mexico." The various wire connection points are visible, including those for line, load, neutral, and ground, along with a UL listing mark.
Final Steps
- Carefully push all wires back into the wall box.
- Mount the dimmer to the wall box using the provided screws.
- Attach a coordinating wallplate (sold separately).
- Restore power at the circuit breaker.
Operating Instructions
The Lutron AYF-103P-277-IV dimmer features a toggle switch for on/off control and a linear slider for adjusting light levels.

Image Description: This image displays the front view of the Lutron AYF-103P-277-IV dimmer switch in an ivory finish. It features a traditional toggle switch at the bottom and a linear slider on the right side for adjusting light intensity. The Lutron logo is subtly embossed at the bottom of the switch plate.
- Turning Lights On/Off: Use the toggle switch at the bottom of the dimmer to turn the connected lights on or off. Pushing the toggle up turns the lights on, and pushing it down turns them off.
- Adjusting Brightness: Use the small linear slider located next to the toggle switch to adjust the brightness level. Move the slider up to increase brightness and down to decrease brightness.
- Preset Level: The toggle switch can also turn lights on to a preset level, which is determined by the position of the linear slider when the lights were last turned off.
Maintenance
The Lutron AYF-103P-277-IV dimmer requires minimal maintenance.
- Cleaning: To clean the dimmer, wipe it with a soft, damp cloth. Do not use chemical cleaners or abrasive materials, as these can damage the finish.
- Inspection: Periodically check the dimmer and wallplate for any signs of damage or loose connections. If any issues are found, turn off power at the circuit breaker and consult a qualified electrician.
- Bulb Compatibility: Ensure that all connected bulbs are dimmable and compatible with the dimmer's specifications (up to 1000 watts for hi-lume, hi-lume 3D, and ecosystem ballasts or hi-lume a-series LED drivers).
Troubleshooting
If your Lutron AYF-103P-277-IV dimmer is not functioning as expected, refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lights do not turn on. |
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| Lights do not dim or flicker. |
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| Dimmer is warm to the touch. |
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Specifications
| Brand | Lutron |
| Model Number | AYF-103P-277-IV |
| Part Number | AYF-103P-277-IV |
| Color | Ivory |
| Material | Metal |
| Voltage | 277 V |
| Wattage | 1000 watts (for compatible ballasts/drivers) |
| Switch Type | 3-way |
| Mounting Type | Wall Mount |
| Switch Style | Slide Switch, Toggle Switch |
| Product Dimensions | 2.3 x 2.3 x 4.6 inches |
| Item Weight | 4 ounces |
| Batteries Required? | No |
Warranty Information
For detailed warranty information regarding your Lutron AYF-103P-277-IV Lighting Dimmer, please refer to the official warranty document.
Customer Support
If you require further assistance or have questions not covered in this manual, please contact Lutron customer support.
- Website: www.lutron.com
- Phone: 800.523.9466
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