hiran
August 24, 2026, 10:01pm
1
I already found out Combine two switches into one fan with high/low/off on dashboard and my problem is similar yet not equal.
My two switches control the fan differently as in the given example, but also I do not yet understand how to go from two switch entities towards the fan-mode-button-row. Do I have to create a template or can I do without?
Here is how my two switches work, and I have three of these fans (and six relais of course):
Switch 1
Switch 2
Fan Mode
Off
Off
Off
Off
On
Slow
On
Off
Fast
On
On
Fast
hiran
August 26, 2026, 8:29pm
3
I decided to go via a template in configuration.yaml. As a start I simply copied the code for the state based fan from Template - Home Assistant
The UI for the helper looks exactly what I was striving for. Now I need to customize this for only two speeds and make it actually switch my switches.
hiran
August 26, 2026, 9:56pm
4
I seem to fail managing state and connecting my switches. Here is the code I have:
template:
- fan:
- name: "fan_arbeitszimmer"
state: "{{ states('fan.fan_arbeitszimmer') }}"
turn_on:
- action: fan.turn_on
target:
entity_id: fan.fan_arbeitszimmer
turn_off:
- action: fan.turn_off
target:
entity_id: fan.fan_arbeitszimmer
percentage: >
{{ state_attr('fan.fan_arbeitszimmer', 'percentage') }}
speed_count: 2
set_percentage:
- action: fan.set_percentage
target:
entity_id: fan.fan_arbeitszimmer
data:
percentage: "{{ percentage }}"
- choose:
- conditions:
- condition: template
value_template: "{{ is_state('fan.fan_arbeitszimmer', 'on') and state_attr('fan.fan_arbeitszimmer', 'percentage') == 100 }}"
sequence:
- service: switch.turn_on
target:
entity_id: switch.treppenhaus_hmip_drsi4_0025a409a1fbd1_lufter_manisha_schnell
- conditions:
- condition: template
value_template: "{{ is_state('fan.fan_arbeitszimmer', 'on') and state_attr('fan.fan_arbeitszimmer', 'percentage') == 50 }}"
sequence:
- service: switch.turn_off
target:
entity_id: switch.treppenhaus_hmip_drsi4_0025a409a1fbd1_lufter_manisha_schnell
- service: switch.turn_on
target:
entity_id: switch.treppenhaus_hmip_drsi4_0025a409a1fbd1_lufter_manisha_langsam
- conditions:
- condition: template
value_template: "{{ not is_state('fan.fan_arbeitszimmer', 'on') or state_attr('fan.fan_arbeitszimmer', 'percentage') == 0 }}"
sequence:
- service: switch.turn_off
target:
entity_id:
- switch.treppenhaus_hmip_drsi4_0025a409a1fbd1_lufter_manisha_schnell
- switch.treppenhaus_hmip_drsi4_0025a409a1fbd1_lufter_manisha_langsam
preset_modes:
- "off"
- "low"
- "high"
preset_mode: >
{% if is_state('fan.fan_arbeitszimmer', 'on') %}
{% if state_attr('fan.fan_arbeitszimmer', 'percentage') == 100 %}
high
{% else %}
low
{% endif %}
{% else %}
off
{% endif %}
set_preset_mode:
- action: fan.set_percentage
target:
entity_id: fan.fan_arbeitszimmer
data:
percentage: >-
{% if preset_mode == 'high' %}
100
{% elif preset_mode == 'low' %}
50
{% else %}
0
{% endif %}
In a dashboard I have a card with three buttons, and I can click it and even see the presets in the popup. The UI reacts by hilighting the correct button, but the switches only get turned off.
When looking at Settings/Tools/States, it is ‘unknown’ and the attributes are
preset_modes:
- 'off'
- low
- high
percentage: 0
percentage_step: 50
preset_mode: 'off'
friendly_name: fan_arbeitszimmer
supported_features: 57
These values never change when I click the UI. What may be missing?
hiran
August 28, 2026, 7:54pm
5
Finally I found out what needs to be done. Maybe this post helps others, or the future me.
I installed a fresh HomeAssistant and simulated the switches I have. This alone took some effort, as just creating switches did not really work out. I failed setting their state. So I created to drop down lists that manage their state. Then I connected two switches to control the drop down lists to show it in the dashboard like my current switches.
After that I created the fan template to also manage the drop down lists, and all of a sudden everything clicked into place. So here is my final result on a clean HomeAssistant, which means anyone should be able to reproduce the result.
# Loads default set of integrations. Do not remove.
default_config:
# Load frontend themes from the themes folder
frontend:
themes: !include_dir_merge_named themes
automation: !include automations.yaml
script: !include scripts.yaml
scene: !include scenes.yaml
template:
- fan:
- name: "two-power-fan"
state: "{{ is_state('input_select.relais_low', 'on') or is_state('input_select.relais_high', 'on') }}"
speed_count: 2
percentage: >
{% if is_state('input_select.relais_high', 'on') %}
100
{% else %}
{% if is_state('input_select.relais_low', 'on') %}
50
{% else %}
0
{% endif %}
{% endif %}
turn_on:
- action: input_select.select_option
target:
entity_id: input_select.relais_low
data:
option: "on"
turn_off:
- action: input_select.select_option
target:
entity_id:
- input_select.relais_low
- input_select.relais_high
data:
option: "off"
set_percentage:
- choose:
- conditions:
- condition: template
value_template: "{{ percentage > 75 }}"
sequence:
- action: notify.notify
data:
message: "Set fan to high"
- action: input_select.select_option
target:
entity_id:
- input_select.relais_low
- input_select.relais_high
data:
option: "on"
- conditions:
- condition: template
value_template: "{{ percentage > 25 and percentage <= 75 }}"
sequence:
- action: input_select.select_option
target:
entity_id:
- input_select.relais_low
data:
option: "on"
- action: input_select.select_option
target:
entity_id:
- input_select.relais_high
data:
option: "off"
- conditions:
- condition: template
value_template: "{{ percentage <= 25 }}"
sequence:
- action: input_select.select_option
target:
entity_id:
- input_select.relais_low
- input_select.relais_high
data:
option: "off"
- switch:
- name: switch_low
state: "{{ is_state('input_select.relais_low', 'on') }}"
turn_on:
- action: input_select.select_option
target:
entity_id: input_select.relais_low
data:
option: "on"
turn_off:
- action: input_select.select_option
target:
entity_id: input_select.relais_low
data:
option: "off"
- name: switch_high
state: "{{ is_state('input_select.relais_high', 'on') }}"
turn_on:
- action: input_select.select_option
target:
entity_id: input_select.relais_high
data:
option: "on"
turn_off:
- action: input_select.select_option
target:
entity_id: input_select.relais_high
data:
option: "off"
input_select:
relais_high:
name: "relais_high"
options:
- "on"
- "off"
initial: "off"
icon: mdi:fan-speed-2
relais_low:
name: "relais_low"
options:
- "on"
- "off"
initial: "off"
icon: mdi:fan-speed-1
I created a dashboard to visualize all these helpers:
