1. Introduction
This manual provides essential information for the safe and efficient use of your Philips LED Clear Ultra Definition Dimmable A15 Light Bulb. Please read it thoroughly before installation and operation to ensure proper functionality and longevity of the product.
2. Safety Information
Observe the following safety precautions to prevent injury or damage:
- Ensure power is turned off at the circuit breaker or wall switch before installation, removal, or any maintenance.
- Do not use with incompatible dimmer switches. Refer to dimmer compatibility lists provided by Philips or consult a qualified electrician if unsure.
- This bulb is designed for indoor use only. Do not expose to water or excessive moisture.
- Do not disassemble, modify, or attempt to repair the bulb. There are no user-serviceable parts inside.
- Dispose of used bulbs according to local regulations for electronic waste.
- Avoid direct eye exposure to the light source when illuminated.
3. Installation
Follow these steps to install your Philips LED A15 light bulb:
- Turn off the power to the light fixture at the circuit breaker or the wall switch.
- Allow the existing bulb to cool completely before attempting to remove it.
- Carefully unscrew the old bulb counter-clockwise from the E26 base socket.
- Screw the Philips LED A15 bulb clockwise into the E26 base socket until it is snug. Do not overtighten.
- Turn on the power to the light fixture at the circuit breaker or wall switch.

4. Operating Instructions
This Philips LED bulb is designed for immediate use upon proper installation and is dimmable:
- Once installed and power is restored, turn on the light switch to illuminate the bulb.
- If connected to a compatible dimmer switch, adjust the dimmer control to achieve your desired brightness level.
- The bulb provides a 5000K Daylight color temperature, offering bright, crisp light, and delivers 750 lumens of brightness.
5. Maintenance
Minimal maintenance is required for your LED bulb:
- Cleaning: Ensure the power is off and the bulb is cool before cleaning. Gently wipe the bulb with a soft, dry, lint-free cloth. Do not use liquid cleaners, abrasive materials, or solvents, as these can damage the bulb's finish or internal components.
- Replacement: The bulb has an estimated lifespan of up to 15,000 hours. When replacement becomes necessary, follow the installation steps outlined in Section 3 in reverse.
6. Troubleshooting
If you encounter issues with your bulb, refer to the table below for common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up | No power to the fixture | Check the circuit breaker and ensure the wall switch is in the 'ON' position. |
| Bulb does not light up | Bulb not screwed in properly | Turn off power, then carefully re-screw the bulb firmly into the socket. |
| Flickering or inconsistent dimming | Incompatible dimmer switch | Ensure your dimmer switch is specifically designed for LED bulbs. Replace if necessary. |
| Flickering or inconsistent dimming | Loose connection | Turn off power, then check the bulb and fixture connections for tightness. |
7. Specifications
Key technical specifications for the Philips LED Clear Ultra Definition Dimmable A15 Light Bulb:
| Feature | Detail |
|---|---|
| Model Number | 573402 |
| Bulb Type | LED A15 |
| Base Type | E26 |
| Wattage | 6.6W (60W Equivalent) |
| Brightness | 750 Lumens |
| Color Temperature | 5000K (Daylight) |
| Dimmable | Yes |
| Lifespan | Up to 15,000 hours |
| Indoor/Outdoor Usage | Indoor |
| Product Dimensions | 2.2 x 4 x 5.05 inches |
| Material | Glass |
| UPC | 046677573409 |
8. Warranty and Support
For detailed warranty information, product registration, or technical assistance, please visit the official Philips website or contact their customer service department. It is recommended to retain your purchase receipt as proof of purchase for any warranty claims.