Sonoff RF bridge cannot control some fans :(

Configuration
1

i have the Sonoff RF bridge (flashed with Tasmota) and it works great with the Sonoff iFan04 via this code:

  - name: "fan kids high"
    command_topic: "cmnd/RF_Bridge/Backlog"
    availability_topic: "tele/RF_Bridge/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
    state_topic: "tele/RF_Bridge/RESULT"
    value_template: '{{value_json.RfCode}}'
    payload_on: "RfSync 12220; RfLow 440; RfHigh 1210; RfCode #765664"
    payload_off: "RfSync 12220; RfLow 440; RfHigh 1210; RfCode #765662"
    state_on: "#765664"
    state_off: "#765662"
    optimistic: true
    retain: false
    qos: 2

strangely, the same code (except hex from another controller) does not work. here is another none-Sonoff 433mhz fan controller i tried.

  - name: "fan bedroom high"
    command_topic: "cmnd/RF_Bridge/Backlog"
    availability_topic: "tele/RF_Bridge/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
    state_topic: "tele/RF_Bridge/RESULT"
    value_template: '{{value_json.RfCode}}'
    payload_on: "RfSync 12220; RfLow 440; RfHigh 1210; RfCode #21D709"
    payload_off: "RfSync 12220; RfLow 440; RfHigh 1210; RfCode #21D706"
    state_on: "#21D709"
    state_off: "#21D706"
    optimistic: true
    retain: false
    qos: 2

i have tried another syntax but this does not work as well:

  - name: "fan bedroom light"
    command_topic: "cmnd/RF_Bridge/rfcode"
    availability_topic: "tele/RF_Bridge/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
    payload_on: "#21D708"
    payload_off: "#21D708"
    optimistic: true