Sonoff SV - control pwm fan

ESPHome
1

I’m trying to get a Sonoff SV to control the speed of a Noctau NF-R8 redux pwm fan. I can get it to turn on and off but i’m not able to control the speed by setting the frequency. I’m pretty sure i got it to work a couple of months ago and i doubt i used setting the frequency. But it has been six months so i’m in doubt

This is my code

esphome:
  name: dbe-ventilator

esp8266:
  board: esp01_1m

# Enable logging
logger:

# Enable Home Assistant API
api:

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

binary_sensor:
  - platform: gpio
    pin: GPIO0
    name: "Aan / Uit"
    on_press:
      - switch.toggle: relay

switch:
# status light
  - platform: gpio
    name: "Status LED"
    pin: GPIO13
    inverted: true
    restore_mode: ALWAYS_ON
# definitie relay
  - platform: gpio
    pin: GPIO12
    id: relay
# definition relay action
  - platform: template
    name: "Ventilator Aan/Uit"
    optimistic: true
    on_turn_on: 
      - switch.turn_on: relay
    on_turn_off: 
      - switch.turn_off: relay

output:
  - platform: esp8266_pwm
    pin: GPIO5
    id: pwm_output
    frequency: 65000Hz
fan:
  - platform: speed
    output: pwm_output
    name: "DBE Ventilator Snelheid"
    id: "DbeVentilator"

When the fan power is connected and i toggle the relay, the fans turn on/off. But as soon as i connect the PWM wire, the fans turn off. So it must have something to do with setting the frequency. I tried everything from 100Hz to 99000Hz. But it doesn’t start the fan.
I’m pretty sure i abandoned the frequecy-path a couple of monts ago because i didn’t get it working but not sure what i used instead

2

use 25kHz as your frequency.

output:
  - platform: ledc
    pin: GPIO12
    frequency: 25000 Hz
    min_power: 0
    max_power: 1
    id: ${prusa_fan}_pwm_output
  - platform: ledc
    pin: GPIO13
    frequency: 25000 Hz
    min_power: 0
    max_power: 1
    id: ${phenix_fan}_pwm_output

fan:
  - platform: speed
    output: ${prusa_fan}_pwm_output
    name: ${prusa_fan}
  - platform: speed
    output: ${phenix_fan}_pwm_output
    name: ${phenix_fan}