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Troubleshooting - Grillo One

This guide covers common issues and solutions for the Grillo One sensor.

LED status reference​

The Grillo One has three status LEDs. Here's what each indicates:

Network LED​

ColorMeaningAction
Blue pulseConnecting or provisioning modeWait, or configure WiFi
GreenConnected to networkNormal operation
YellowConnection warningCheck network stability
RedConnection errorCheck network setup

Sensor LED​

ColorMeaningAction
Blue pulseInitializingWait for startup to complete
GreenRunning normallyNormal operation
RedSensor errorContact support

Data LED​

BehaviorMeaning
FlashingTransmitting data
OffNo transmission

Quick reference​

SymptomLikely CauseSolution
Blue pulsing (stuck)No network foundConnect Ethernet OR join GrilloOne-XXXX WiFi to provision
Network LED redWiFi credentials invalidDevice will auto-reset and re-enter provisioning
Sensor LED redAccelerometer not respondingContact support (hardware issue)
No data reaching serverInternet connectivity issueCheck firewall allows outbound UDP 5683/5684
Time not synchronizedNTP blockedCheck firewall allows outbound UDP 123

Common issues​

Sensor won't power on​

Symptoms: No LED activity, device appears dead

Solutions:

  1. Verify power adapter is connected to both sensor and outlet
  2. Try a different power outlet
  3. Check power adapter cable for damage
  4. If available, test with a known-working adapter
  5. Contact support if issue persists

Can't connect to WiFi​

Symptoms: Sensor won't connect to your wireless network

Solutions:

  1. Verify 2.4 GHz network

    • Grillo One only supports 2.4 GHz
    • 5 GHz networks will not appear in the list

  2. Check password

    • Re-enter WiFi password carefully
    • Watch for special characters

  3. Signal strength

    • Move sensor closer to router temporarily
    • Consider a WiFi extender for permanent solution

  4. Network capacity

    • Some routers limit connected devices
    • Check router settings

  5. Factory reset and retry

    • Power cycle via USB-C cable
    • Reconfigure WiFi from scratch

Sensor shows "Offline" in dashboard​

Symptoms: Sensor was working but now shows offline

Solutions:

  1. Check physical setup

    • Verify power connection
    • Check LED status on device
    • Verify network cable (if using Ethernet)

  2. Check network

    • Verify your internet connection is working
    • Check if WiFi password changed
    • Look for network outages

  3. Restart sensor

    • Unplug power for 30 seconds
    • Reconnect and wait 2-3 minutes

  4. Check firewall/network changes

    • Ensure UDP ports 5683, 5684, and 123 are not blocked
    • Verify no new network restrictions

Sensor not appearing after provisioning​

Symptoms: Added sensor to dashboard but it won't appear

Solutions:

  1. Wait longer

    • Initial connection can take up to 5 minutes
    • Refresh the dashboard page

  2. Verify network setup

    • Ensure sensor completed WiFi/Ethernet setup
    • Check LED indicates network connection

  3. Check Device ID

    • Verify correct Device ID was entered
    • Watch for typos (0 vs O, 1 vs l)

  4. Check network selection

    • Ensure sensor was added to the correct network
    • Verify you're viewing the right network in dashboard

Poor data quality​

Symptoms: Noisy waveforms, excessive false triggers

Solutions:

  1. Check mounting

    • Ensure sensor is level
    • Verify sensor is stable and not moving
    • Tighten mounting hardware

  2. Evaluate location

    • Move away from HVAC equipment
    • Distance from roads with heavy traffic
    • Avoid upper floors if possible

  3. Check for local vibration sources

    • Washing machines, dryers
    • Compressors, pumps
    • Construction activity

  4. Environmental factors

    • Strong wind can affect buildings
    • Temperature changes can cause noise

WiFi keeps disconnecting​

Symptoms: Sensor frequently goes offline and reconnects

Solutions:

  1. Signal strength

    • Check distance to router
    • Look for interference sources
    • Consider WiFi extender

  2. Router issues

    • Restart your router
    • Check for firmware updates
    • Verify router isn't overloaded

  3. Use Ethernet instead

    • More reliable than WiFi
    • Eliminates wireless interference

  4. Channel congestion

    • Change WiFi channel on router
    • Use a WiFi analyzer app to find best channel

Factory reset​

To completely reset your Grillo One:

  1. Disconnect the power adapter
  2. Connect a USB-C cable to the sensor
  3. Power cycle by disconnecting and reconnecting the USB-C cable
  4. Sensor will restart in setup mode
  5. Reconfigure WiFi and re-provision
warning

Factory reset clears all settings including WiFi configuration. You'll need to set up the sensor from scratch.

Automatic recovery​

The Grillo One has built-in recovery mechanisms:

SituationAutomatic Response
Invalid WiFi credentialsAuto-clears credentials, restarts into provisioning mode
Network dropoutRetries connection (3 attempts with 1-second delay)
Bad firmware updateAuto-rollback to previous working version
Sensor timeoutHealth check every second, LED indicates error

Diagnostic information​

The device automatically reports diagnostics to Grillo Cloud every 60 seconds, including:

  • Connection type (WiFi or Ethernet)
  • WiFi signal strength (if applicable)
  • Memory usage
  • Time synchronization status
  • Uptime
  • Data buffer usage
  • Temperature

When contacting support, gather this information:

  1. Device ID - Found on sticker on device or packaging
  2. LED status - Current color/pattern of all three LEDs
  3. Network type - WiFi or Ethernet
  4. Dashboard status - What the dashboard shows
  5. Recent changes - Any changes to network or setup
  6. Error messages - Screenshots if available

Contact support​

If you've tried the above solutions without success:

  1. Visit Support Contact
  2. Include diagnostic information listed above
  3. Describe the issue and steps already tried