How to Fix Inovelli Switch Not Restoring State After Power Return
- Power-restore state parameter not set to 'previous'
- Set to always-off (or always-on) on restore
- Default power-on behavior
Problem Description
Your Inovelli switch does not return to its previous state after a power outage — the light either stays off, comes on at full brightness, or comes back to the wrong dim level. The Power Restore parameter controls this behavior, but firmware bugs in early versions and Smart Bulb Mode interactions can complicate the expected behavior.
Why This Happens in Real Homes
An Inovelli switch not returning to its previous state after a power outage is a power-restore-state setting — the switch has a parameter controlling what the load does when power comes back: always on, always off, or restore the previous state. If it's not resuming as you expect, that parameter isn't set to "restore previous."
Set the power-restore (power-on) state parameter to your preference — "restore previous state" to resume whatever it was, or "on" if you want it always powered (important for smart bulbs in Smart Bulb Mode, so the bulbs come back on). Make sure the parameter is actually written to the device, update firmware, and re-sync the hub after power returns so its state matches. Configuring that one parameter controls the post-outage behavior.
Symptoms
- Doesn't restore state after power returns
- Load off after an outage
- State not restored on power return
- Comes back off (or on) unexpectedly
- Power-restore behavior wrong
- Doesn't resume previous state
- Load defaults after outage
- State not remembered
Recognize these? Here's what usually causes it.
Common Causes
- Power-restore state parameter not set to 'previous'
- Set to always-off (or always-on) on restore
- Default power-on behavior
- Smart Bulb Mode expectations
- Firmware issue
- Parameter not applied
- Load-state config wrong
- Hub not re-syncing state
Most fixes happen in the first 3 steps.
Do not leave restore behavior at default without site requirements review.
Tools & Requirements
Step-by-Step Solution
Set the Power Restore parameter
The Power Restore parameter controls what happens when power returns after an outage. Blue Series VZM31-SN: Parameter 256 — set to 0 (off), 1 (on), or 2 (previous state). Red Series LZW31-SN: Parameter 11 — check the Inovelli docs for your firmware version's value mapping (some firmware versions use 0=off, 1=on at 100%, 2=previous state; others use different values). Set to 2 (previous state) if you want the light to return to exactly the brightness and on/off state it was in before the outage.
Check if Smart Bulb Mode affects power restore
If Smart Bulb Mode is active: the relay is always on, so power restore behavior is simple — the relay closes on power return and the smart bulb powers up. The smart bulb then restores its own state based on its own power-on behavior setting (set in the bulb's app — Hue, LIFX, etc.). If the Inovelli switch restores to ON but the smart bulb comes back to a different color or brightness than expected: the issue is the bulb's power restore setting, not the Inovelli switch.
Test with a breaker toggle
Turn off the breaker feeding the Inovelli switch. Wait 10 seconds. Turn it back on. Check: does the light return to the expected state? If the switch is set to 'previous state' but the light does not restore: the switch may not be saving the current dim level to NVM frequently enough. Some firmware versions save dim level to NVM only when the level changes, not continuously. If the power was cut during a transition (dimming up/down): the saved state may not match the last visible level.
Update firmware for improved state retention
Blue Series firmware 2.11+ improved state retention during unexpected power loss. Earlier versions had a race condition where a power cut during a dim transition could save an incorrect level to NVM. Update firmware via Zigbee2MQTT OTA or ZHA. After updating, test the power restore behavior by setting the light to 50% brightness, waiting 30 seconds (allowing the switch to save to NVM), then toggling the breaker. The light should return to 50%.
Use a Home Assistant automation as a backup restore
If the switch's built-in power restore is unreliable: create a Home Assistant automation that fires when the switch changes from 'unavailable' to 'available' (indicating it just rebooted after a power loss). The automation sets the light to your preferred default state. This is more reliable than the switch's internal power restore because Home Assistant can set any brightness level and even trigger a scene (e.g., 'restore evening lighting' based on time of day).
Quick Solutions
Still having issues? This is usually the deeper cause below.
If drain continues after replacing batteries, check the event history — a stuck-open sensor or rapid polling loop burns through batteries in days.
Power-restore policy is critical for safety and occupancy logic.
Battery-related failures are almost always flagged too late — the device degrades silently for days before the app catches up to what's actually happening.
- Power-restore state parameter not set to 'previous'
- Set to always-off (or always-on) on restore
- Default power-on behavior
- Smart Bulb Mode expectations
- Firmware issue
Before you go — try one of these (they fix most cases).
Official Manufacturer Manual
Inovelli provides official product documentation through their online manual rather than downloadable PDF. Access setup guides, troubleshooting steps, and product specifications for your Inovelli Power Restore Behavior.
Source: help.inovelli.com
Need More Help? Inovelli Support
Note: The contact information below connects you directly to Inovelli's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.