Pentair 400 nt

lclayto

New member
Jul 14, 2019
3
california
When I turn filter pump on the heater comes on also without command. The pool filter pump comes on at 6 am to circulate the heater comes on without being programed too.
Any suggestions?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
9,876
Northern NJ
Welcome to TFP.

What type of automation or pool controls do you have?

What heater do you have?

Where do you control heater and pool temperature?

This new to you?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
9,876
Northern NJ
I still don’t understand your problem.

What pool temperature is set on the Aqualink?

What is the actual pool temperature?

What temperature is set on the Pentair 400 heater panel?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
9,876
Northern NJ
Check that the heater control relay that the firemans switch is wired to has not failed closed. Use a multimeter to see if provides an open circuit when water temp is greater then pool temp set.