Freezer warning rule

Setup, Configuration and Use Scripts & Rules
1

hi all,i am trying to create a warning rule for my freezer.My goal is if the freezer temperature is over -10 C to warn me and check again in 30 mins.

var Timer sfreezer_timer = null
rule "small_freezer"
when
    Item SmallFreezer_Temperature changed
then
    if (SmallFreezer_Temperature.state > -10) {
	    deskhall.sendCommand(ON)
	    say("the big freezer temperature is"+SmallFreezer_Temperature.state.format("%.1f")+"degrees , something is wrong")
		val mailActions = getActions("mail","mail:smtp:mailserver")
        mailActions.sendMail("xxxxxxxxxx@gmail.com, xxxxxxxxx@yahoo.co.uk", "Small Freezer", "check the small freezer,the temperature is over -10C")
		sfreezer_timer = createTimer(now.plusMinutes(30)) [|
		    if (SmallFreezer_Temperature.state > -10) {
			    say("the big freezer temperature is"+SmallFreezer_Temperature.state.format("%.1f")+"degrees , something is wrong")
		        val mailActions = getActions("mail","mail:smtp:mailserver")
                mailActions.sendMail("costascontis@gmail.com, oxlagogi@yahoo.co.uk", "Small Freezer", "check the small freezer,the temperature is over -10C")
				sfreezer_timer.reschedule(now.plusMinutes(30))
			}
			else {
                if (sfreezer_timer !== null) {
	             sfreezer_timer.cancel
		         sfreezer_timer = null				 
                }
            }
		]	
	}
end

after 2 hours i cant make it work…my temp sensor is reporting temps as a Number for example:

2021-04-22 10:44:49.937 [vent.ItemStateChangedEvent] - SmallFreezer_Temperature changed from -19.42 °C to -19.6 °C

but i thing the problem is at the

if (SmallFreezer_Temperature.state > -10)

tried to reverce the > symbol ,but nothing works…Any idea?

2

It’s got units.

That hasn’t got units. Is -19°C more than -10°F, or 10 bananas, or?
You need to compare like with like.

The rule ha other problems, it runs every time the temperature changes and creates a new timer, as well as any existing.

1 Like
3

thanx i solved it :slight_smile: you re right…the quarantine has make me slow !!!

4

just one question,i am trying to make my Google home say the current freezer temperature.It does but only the number and the unit ignoring the minus (-) symbol at the begining.

say("the small freezer temperature is"+SmallFreezer_Temperature.state+"something is wrong")

it just says for example “16 °C” but not “-16 °C”

5

Add an if statement to add the word minus ?

6

found the solution here https://community.openhab.org/t/solved-text-to-speech-tts-output-of-negative-numbers-in-german/116727

1 Like
7

I suspect it was being skipped due to its many ises

hyphen - ignored or a slight pause
negative
minus

Perhaps others in our imprecise language.