AND funtion on multiple triggers, or a work-around for it?

Configuration
#1

Hi,

I want to create an automation to switch off the heating furnace (switch.verwarming_brander) when ALL of the radiators (also switches because they all have a solenoid valve) are OFF

I can’t use the triggers because then it will switch off when 1 of the radiators switches off, it should wait untill the LAST one switches off

The multiple triggers use “OR” function, but I need “AND”

It should only switch off the heater when the last radiator switches off.

How should I do this ?

I already have an automation for switching ON the burner, but that’s easy because there does need the “OR” function on the triggers : If any radiator switches on, the burner should switch on … easy peasy … but for switching OFF … ???

I thought of putting all the radiators as trigger going from “on” to “off” and then adding all the radiators again as condition being “off” … but I think that would create a problem on the last one, because at the moment of the trigger the condition is still “on”, so it won’t pass the condition at that moment … but because of it switching off there won’t be any other trigger to turn the furnace off … hmmmmmm

Greetings
Pascal
Belgium

#2

No there won’t be an issue.
Do as you said, all being triggers and all being condition and it will work.

1 Like
#3

I’ll try …

#4

Create a group containing all the radiator switches. Use the group in a State Trigger because the group will report off only when all radiators are off.

1 Like
#5

You can use a group. A group’s value is “on” as long as one entity within the group is “on”, and turns “off” only when all the entities are “off”.

trigger:
  - platform: state
    entity_id: group.all_radiators
    to: "off"
1 Like
#6

I think this simple automation should do the trick.

alias: example
trigger:
- platform: state
  entity_id: group.radiators
action:
- service: 'switch.turn_{{ trigger.to_state.state }}'
  target:
    entity_id: switch.boiler
1 Like
#7

edit: all of the other posts have covered it, my post is essentially superfluous. :slight_smile: I especially like 123’s idea.

This is easy. Just put all radiators as a trigger and all radiators as a condition. It will only fire once the last one goes off.
like this: (bad syntax as I am doing this by hand)

trigger:
- entity: heater.heater1
  to_state: off
- entity: heater.heater2
  to_state: off
conditions:
- entity: heater.heater1
  state: off
- entity: heater.heater2
  state: off
#8

I made the group and it works !

thanks a lot for the help !

#9

Glad to hear using a group solved the problem.

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