Do I need parenthesis here?

[Illusion]

If

       Time is 12:00:00PM

    Or Time is  1:00:00PM

    Or Time is  2:00:00PM

   And Status  'Bathroom Sink Heater' is On



Then

       Set 'Bathroom Sink Heater' Off



Else

  - No Actions - (To add one, press 'Action')

If it is not clear, what I am trying to do is turn off the IR Sink Heater if it has been left on. I have the ISY looking at this three times a day. If it has been left on at any of these times I want the ISY to turn it off. Do I need Parentheses around the 'OR' arguments? I know that it will work with them there, but will it work without them there?

[Chris Jahn]

Illusion,

 

Yes, you need parenthesis, basically 'ANDs' are grouped together

 

A or B or C and D is the same as A or B or (C and D)

 

What I think you want is (A or B or C) and D

[Illusion]

Thanks Chris.

 

That is what I thought after sleeping on it. Thanks for the confirming this.

[brobin]

Hmmm, I had a program that was IF A and B or C or D and it apparently worked as I wanted it to which is IF A and (B or C or D) not (A and or C or D, but after reading this I went back and added the parenthesis around (B or C or D).

I'm wondering why it worked correctly without the parens.

[Chris Jahn]

brobin,

 

Not sure why it would have worked, unless maybe your C and D conditions where never True, or it just so happened that A was always True when C and/or D were True.

[brobin]

I think you're right about that. I didn't exercise it through all conditions.