VD Help - 2 devices second with delay

[rgiddey 6]

Hoping someone can assist.

 

With my pool I have 3 devices on a Fibaro dual switch, they are:

Pool Filter

Pool Heater

Pool Cleaner

 

Both the pool cleaner and heater require the Pool filter to be turned on for them to work or the pumps will run dry, I have some failsafe scenes that protects them.

 

However in regards to the Pool Heater, I need the Pool Filter to be on for 120s prior to the Pool Heater powering on otherwise it will get a low pressure fault and I will have to manually reset heater.

 

So can someone help me with a VD switch for the Pool Heater so that it wont turn on until the pool filter has been on for 120s.

 

Any other ideas would be appreciated.
Thanks

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[kunoch 27]

I would use the standard block scene time delay in the IF condition.

IF filter is on 120s, THEN switch on the heater. Scene triggered by the ON of the filter

Can also be called form a VD.