ALARM issue

[MAXreefer]

Just installed and configured the controller yesterday and I have constantly the "ALARM" text blinking on the display.
I didn't activate any of the alarm settings for the probes, temp etc.
Any hints what else could cause the alarm?

Thanks for any help
Michael

[wesheltonj]

Do you have an ORP connection? If so, is the null plug attached? If not, try that and see if it goes away.

[MAXreefer]

Yep..That was it. Alarm is gone now
Thanks for your help
Michael

[Matthias]

Maybe better: Deactivate all unused inputs.