Browse by device type
Medical Devices Light Meanings
Browse general home medical device indicator lights, including CPAP warning lights, battery lights, and power indicators.
Medical Devices guides
Medical Device Battery Light
A battery light on a home medical device usually means the device battery is low, charging, missing, not detected, or needs replacement depending on the device.
Medical Device Lights · General
CPAP Red Light
A red light on a CPAP machine usually means the device needs attention, such as power, humidifier, filter, mask leak, service, or a model-specific fault.
Medical Device Lights · General
How to troubleshoot medical devices lights
Start with the exact device type, then narrow the signal by color and pattern. A solid light can mean something very different from a blinking, flashing, pulsing, or alternating light. If the device has a screen, mobile app, error code, alarm sound, or label beside the light, use that information too.
For safety-sensitive devices, do not rely on color alone. Smoke alarms, carbon monoxide detectors, vehicle warnings, batteries, chargers, medical equipment, and electrical devices should always be checked against official guidance.
Good first checks
- Check power and cables before changing settings.
- Write down the exact color and blink pattern.
- Check the app, display, or error message if one exists.
- Look for the exact model number.
- Avoid factory resets until simpler checks fail.