opencode/decisions.yaml
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@@ -579,3 +579,25 @@ notes:
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- webrtc
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- webrtc
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pin: true
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pin: true
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status: active
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status: active
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- id: 2026-08-28-filter-plug-is-hardware-faulty-replace
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date: 2026-08-28
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title: Filter plug is hardware-faulty; replace as "Air Purifier"
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decision: 'The Filter plug (0xffffb40e060893d8, switch.filter) is hardware-faulty:
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downlink fails with MAC_CHANNEL_ACCESS_FAILURE (0xe1) despite clean re-pair and
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relocation; uplink/button/other devices work. Do not re-diagnose. Scheduled for
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replacement, to be named "Air Purifier".'
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rationale: Clean re-pair and relocation next to the coordinator both failed to resolve
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identical 0xe1 errors on downlink-only commands; physical button and uplink
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telemetry work, and no other device shares the fault. Diagnosis of a defective
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receive/ack path is final. Replacement gets a new IEEE, so
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zigbee2mqtt/configuration.yaml must be re-pointed to it and the name set to "Air
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Purifier".
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entities:
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- switch.filter
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- sensor.0xffffb40e060893d8_linkquality
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files:
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- zigbee2mqtt/configuration.yaml
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integrations:
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- zigbee2mqtt
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pin: true
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status: active
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