Hanna checker DKH error

[jamo130788]

so I went to do my usual all test tonight and it looks like my Hannah checker went on the blink. Does anyone know what the below error message means and how to fix it ?
Thanks

 

[Idoc]

I can't find that error message anywhere. But the ".lo" usually means low light. This could mean the cuvettes are dirty or the light source inside is somehow blocked.

 

[DesertReefT4r]

Have you tried a fresh battery? I can check my alk checker manual to see if there is any info on that error message if u need me too.

 

[jamo130788]

Thanks guys- it just started working again - so I guess that solves that . Would be nice to know what that error was, I’ll reach out to Hanna and update here