On this webpage
There are 2 automation triggers, the second one switches off a heater after a power cut. This works great if I manually run the automation but it does not automatically run.
What do I need to do other than just add this automation to make it constantly monitor the heater and act on it’s own?
Take a look at the climate entity’s history and see how it changes during and after a power cut. Does it change to unavailable during the power cut?
If so, you can use a state trigger with from: unavailable so that the automation fires whenever it comes back online
A (numeric) state trigger only fires when the state changes. In this case, it will only fire once when the temperature goes above 36, and the trigger does not care whether the conditions evaluate to true or which actions are performed. The trigger will never fire again until the temperature has gone below 36 and then back above the threshold again.
Thanks both of you, I will check out your suggestions.