Started using HA 2mths ago and accumulated about 70 devices, just Zigbee alone.
Everything was well until a few days ago when I started noticing automations and device reaction slowing and somethings not firing at all.
Started troubleshooting and have since noticed a trend. Error starts to appear for some devices. Tried reconfiguring in Z2M, deleting and re-adding but error continues to occur.
|2026-04-01 18:21:46] error: |zh:ember:ezsp: ERROR Transaction failure; status=ERROR_WRONG_DIRECTION. Last Frame: [FRAME: ID=52:SEND_UNICAST Seq=125 Len=29].|
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|[2026-04-01 18:21:46] error: |zh:ember:ezsp: ERROR Transaction failure; status=ERROR_WRONG_DIRECTION. Last Frame: [FRAME: ID=52:SEND_UNICAST Seq=125 Len=29].|
|[2026-04-01 18:21:46] error: |z2m: Publish 'set' 'state' to 'Kitchen_Flood_Light_2' failed: 'Error: ZCL command 0x54ef441000d975f9/1 genLevelCtrl.moveToLevelWithOnOff({level:0,transtime:20,optionsMask:0,optionsOverride:0}, {timeout:10000,disableResponse:false,disableRecovery:false,disableDefaultResponse:false,direction:0,reservedBits:0,writeUndiv:false}) failed (~x~> [ZCL to=0x54ef441000d975f9:51486 apsFrame={profileId:260,clusterId:8,sourceEndpoint:1,destinationEndpoint:1,options:4416,groupId:0,sequence:0}] Failed to send request with status=FAIL.)'|
[2026-04-01 18:21:41] error: z2m: Failed to configure 'Kitchen_Hob_Switch', attempt 3 (Error: Device 0x54ef441000d558f2 has no input cluster genAnalogInput
And it eventually ends with error from adaptor before stopping
|[2026-04-01 18:16:00] error: |zh:ember:uart:ash: Received ERROR from adapter, with code=ERROR_EXCEEDED_MAXIMUM_ACK_TIMEOUT_COUNT.|
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|[2026-04-01 18:16:00] error: |zh:ember:uart:ash: ASH disconnected | Adapter status: ASH_NCP_FATAL_ERROR|
|[2026-04-01 18:16:00] error: |zh:ember:ezsp: Fatal error, status=ASH_NCP_FATAL_ERROR. Last Frame: [FRAME: ID=52:SEND_UNICAST Seq=101 Len=7]|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: ASH COUNTERS since last clear:|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Total frames: RX=2497, TX=2846|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Cancelled : RX=0, TX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: DATA frames : RX=2367, TX=358|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: DATA bytes : RX=70706, TX=9414|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Retry frames: RX=115, TX=6|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: ACK frames : RX=13, TX=2481|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: NAK frames : RX=0, TX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: nRdy frames : RX=0, TX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: CRC errors : RX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Comm errors : RX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Length < minimum: RX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Length > maximum: RX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Bad controls : RX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Bad lengths : RX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Bad ACK numbers : RX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Out of buffers : RX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Retry dupes : RX=115|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: Out of sequence : RX=0|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: ACK timeouts : RX=6|
|[2026-04-01 18:16:00] info: |zh:ember:uart:ash: ======== ASH stopped ========|
|[2026-04-01 18:16:00] info: |zh:ember:ezsp: ======== EZSP stopped ========|
|[2026-04-01 18:16:00] info: |zh:ember: ======== Ember Adapter Stopped ========|
|[2026-04-01 18:16:00] error: |z2m: Adapter disconnected, stopping|
|[2026-04-01 18:16:00] info: |z2m: Stopping Zigbee2MQTT (restart=false, code=2, signal=undefined)|
|[2026-04-01 18:16:00] info: |z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/state', payload '{state:offline}'|
|[2026-04-01 18:16:00] info: |z2m: Disconnecting from MQTT server|
|[2026-04-01 18:16:00] info: |z2m: Stopping zigbee-herdsman...|
|[2026-04-01 18:16:00] info: |z2m: Stopped zigbee-herdsman|
|[2026-04-01 18:16:00] info: |z2m: Stopped Zigbee2MQTT|
And the cycle begins.
I’ve tried all kinds of restarting and power cycle of HA, Z2M, and my Sonoff Dongle M on Zigbee router mode.
I’ve also tried updating the dongle to the latest firmware and re-trying. I’m now on version 10.0.8 beta and the results are still the same. The dongle is connected via TCP and I can see that the Z2M indicator in the web interface greys out, indicating a disconnection. I’ve tried repositioning the the dongle with no help.
I’ve noticed that just before Z2M stops, the WiFi network itself will almost grind to a halt and once Z2M stops, the WiFi works properly again.
Using my Tapo camera app also quickens Z2M from disconnecting.
Does anyone have any suggestions on the things I should try? I am currently waiting for Sonoff to reply about this issue.