Hey tsar !!!
Both functions are from the same flow switch and I'll guess yours is defective. @Jimrahbe is the Pentair whisperer and knows how to troubleshoot further, but until he stops by, reset the power and see of that helps. If the unit gets a low salt reading it won't try again for 24 hours. You can force the next test by resetting it.
Thats weird because the red/green is the unit trying to read the salt and it will either like the salt and go green in a minute, or not like the salt and go red in a minute. And it shouldn't be doing the salt test if there is no flow.The flow LED in status is still red. And the lights for salt level continue flashing red/green
Both functions are from the same flow switch and I'll guess yours is defective. @Jimrahbe is the Pentair whisperer and knows how to troubleshoot further, but until he stops by, reset the power and see of that helps. If the unit gets a low salt reading it won't try again for 24 hours. You can force the next test by resetting it.