Rule with Timer

Setup, Configuration and Use Scripts & Rules
1

Hi, i want to create an openhab rule with a timer event.

I want to have a button on my visu to start making warmwater with my heatingpump. My time-program for warmwater is one time on noon, rest of the day warm water program is disabled.

But sometimes it would be nice to have warm water by pressing a button. I want to make a rule which enables warmwater on my hatingpump for about 60 minutes and after the time is over or the temperature is reached, the warmwater-settings in the heatingpump should be set to the old variables.

How can i do this? Can someone help me a little bit?

2

Use a timer. You don’t provide enough detail (Items, variables, etc) so this code is notional.

var Timer hotWaterTimer = null

rule "Manual hot water"
when
    Item ManualHotWaterSwitch received command
then
    // save current states into vals

    if(hotWaterTimer == null) {
        hotWaterTimer = createTimer(now.plusHours(1), [|
            // turn off the hot water
            // postUpdates with saved states in the vals saved above
            hotWaterTimer = null
        ]
    }
    else {
       hotWaterTimer.resechedule(now.plusHours(1))
    }
end
3

Thank you.

But there is another problem:

I want to end the warmwater programm after 60 minutes or if the water-temperature reached a temp. But i want to stop warmwater on reaching the temp only when the timer is active.

The automatic warmwater program of the heatingpump should run without any changes through the rule.

4

Create another rule in the same rules file that triggers on the temp sensor. Have this rule:

if(hotWaterTimer != null) {
    hotWaterTimer.reschedule(now.plusSeconds(1))
}

This will cause the timer to go off one second after the temp is reached and requires the least amount of code.