Quote Originally Posted by Vinny View Post
Hi Ryan,

It sounds like the Doser is unresponsive to the manual override buttons and the GHL logo light may be OFF.

If that's the case, you can recover the device by following the steps found in our Knowledge Base:

Doser 2.1 Standalone: Follow these steps if you have a native SA doser
https://www.aquariumcomputer.com/kno...rgency-update/

Doser 2.1 Slave: Follow these steps if you have a native slave doser
https://www.aquariumcomputer.com/kno...r-pab-devices/

If the plan is to have the P4 control the doser and KHD AND you have a Standalone doser, make sure you set that doser to slave mode BEFORE assigning it to the P4.
https://www.aquariumcomputer.com/kno...to-slave-mode/


Vinny!

Thank you so much for those links. You are 100%, the top logo is not illuminated. I will go through and reset the doser. I appreciate your knowledge and help!!!

Thank you!