Zigbee2MQTT Ping Spam From an Absent Device? The Backoff Bug
Zigbee2MQTT pinging a long-gone device every 12 seconds? A setTimeout overflow in the availability backoff. How 2.14.0 fixes it, and a workaround.
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troubleshooting
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Zigbee2MQTT OTA Failing on Multiple Devices? A Rogue Server
OTA checks failing on several unrelated Zigbee2MQTT devices at once? One misbehaving device can hijack OTA server discovery. How to spot and remove it.
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Zigbee2MQTT ASH_ERROR_TIMEOUTS After a Node.js Update: Fixed
Zigbee2MQTT won't start with ASH_ERROR_TIMEOUTS after a Node.js update? The cause is a serialport bug on Node 26.3+, and Zigbee2MQTT 2.14.0 patched it.
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Zigbee2MQTT keep_config: Remove a Device, Keep Its Settings
Zigbee2MQTT's remove request just gained keep_config and clear_cache. What each preserves before you re-pair a device, and what neither one touches.
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Zigbee2MQTT Device Removed, Still Shows in Home Assistant
Removed a device in Zigbee2MQTT but Home Assistant still shows it? How the automatic discovery cleanup works, why it misses, and the current fix.
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Zigbee2MQTT Binding Not Working? A Diagnostic Checklist
Zigbee2MQTT bind reports success but nothing happens? Read the failed array in the response first, then work five documented causes ranked by likelihood.
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Zigbee2MQTT Onboarding Stuck or Looping: How to Fix It
Diagnose Zigbee2MQTT onboarding loops, hangs and 404 errors using startup logs, saved settings, data paths and version-specific fixes.
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Tuya TS0201 Humidity Wrong in Zigbee2MQTT: What Helps
A Tuya TS0201 reporting humidity about ten times too low in Zigbee2MQTT has a scale bug, not a calibration problem. Here is what actually helps.
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Zigbee2MQTT: Replace a Dead Device Without Losing History
Swapping a dead Zigbee2MQTT device without losing your Home Assistant history: the entity_id step that makes it work, and what it still won't carry.
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Change Zigbee2MQTT base_topic Without Breaking HA
Changing Zigbee2MQTT's base_topic rewrites every Home Assistant unique_id, so entities duplicate and the originals strand. What breaks and how to recover.