Troubleshoot an ADC-VDB770 video doorbell
Interpret the ADC-VDB770’s button LED and recover from common problems such as a lost connection, a silent indoor chime, or Cool-Down mode.
Category: Doorbell cameras
Does this apply to my device?
For an installed ADC-VDB770 on your E2 Technologies Alarm.com account that has power. The LED patterns and button timings here are specific to the ADC-VDB770; other Alarm.com doorbell models differ. If the doorbell went offline after a router or Wi-Fi change, use the reconnect article in this category, which runs the app’s device-aware troubleshooting wizard.
Identify your device
Confirm the model from your installation records or the reference card supplied with the doorbell. The button LED is on the doorbell itself; do not remove a wired doorbell from the wall to look for a label.
Before you begin
You need the Alarm.com app and a login allowed to view video devices, plus physical access to the doorbell button. Note that pressing the button rings the indoor chime once; if you will be holding the button for a recovery procedure and want to avoid this, the chime can be disabled in the Alarm.com customer website first.
Steps
- Read the button LED: solid red means no local or internet connection, blinking green means a local network connection only, solid yellow means Cool-Down mode is active (the unit is warm and managing its temperature), and double-blinking blue means the doorbell cannot ring the indoor chime.
- In the Alarm.com app, open Video and check whether the doorbell shows as offline. If it does, select Troubleshoot and Get Started and follow the wizard’s device-specific instructions first.
- If the doorbell will not reconnect or enroll after the wizard, power-cycle it: hold the doorbell button for 40–45 seconds, release when the LED blinks yellow, let it reboot, then recheck live view.
- If the indoor chime stays silent or the LED double-blinks blue, confirm the doorbell has power and note the LED pattern. Chime behavior also depends on account settings and wiring, so do not open the chime box.
- Use a factory reset — hold the button 45–50 seconds until the LED blinks red and green — only when support directs it. A device that was previously enrolled must be deleted from that Alarm.com account before it can be installed again.
Expected result
After a power-cycle or reboot the LED should settle to solid green and live view should return in the app. Cool-Down mode clears by itself once the doorbell cools; a persistent solid red or double-blinking blue LED means something still needs attention.
If you still need help
Contact E2 Technologies with the LED pattern you saw, when the problem started, and whether your chime, router, or Wi-Fi recently changed. Avoid factory resets without support guidance: the doorbell must be deleted from its previous Alarm.com account before it can re-enroll, and a reset will not fix chime or wiring faults.
Last reviewed: . Instructions checked against Alarm.com: ADC-VDB770 LED status and troubleshooting.