Skip to main contentSkip to accessibility statement
Back to ShopSimpliSafe® Account Login
SimpliSafe Support Logo
  • SimpliSafe Support Logo
  • Product Support
  • Getting Started
  • Using Your System
  • Account & Billing
Smoke & CO Detector
  1. Product SupportProduct Support
  2. Smoke & CO DetectorsSmoke & CO Detectors
  3. Smoke & CO DetectorSmoke & CO Detector
  4. Malfunction ErrorMalfunction Error
Smoke & CO Detector

Malfunction Error

Updated June 23, 2026

If you see a “Malfunctioned” error for your Smoke Detector, Carbon Monoxide Detector, or Smoke & Carbon Monoxide Detector, that means that the device should be replaced as soon as possible. 

If your device is still within warranty (opens in new tab), our Support team (opens in new tab)can send you a replacement.

  • Product Support
  • Getting Started
  • Using Your System
  • Alarm & Monitoring
  • Wi-Fi Troubleshooting
  • Account & Billing
  • Moving Support
  • Orders & Warranty
  • App Support
  • Business Security
  • Shop
  • Contact Us

© 2026 SimpliSafe, Inc.

California Residents - Do Not Sell My Personal Information

  • Legal
  • Privacy
  • Blog
  • Accessibility Statement