Proctor Silex coffee maker displays CLEAN or a clean icon and may beep repeatedly, but still brews.

Safety first: Unplug the coffee maker before filling with cleaning solution.

• Prepare descaling solution: Mix equal parts white vinegar and water. Fill the reservoir to the maximum level.
• Run cleaning cycle: If your Proctor Silex model has a dedicated CLEAN button, press and hold it as directed in the manual to start the cleaning program. If not, start a regular brew cycle.
• Soak phase: Allow the unit to brew about halfway, then press the power button to pause. Let the solution sit in the system for 20–30 minutes to dissolve scale.
• Complete and rinse: Resume the cycle to finish. Then run 2–3 full cycles with fresh water to remove vinegar taste and loosened debris.
• Reset indicator: On some models, the CLEAN light will turn off automatically after a full cleaning cycle. Others may require pressing and holding the CLEAN button for several seconds to reset.