Alkatronic

[ssster2020]

I have a code01 error. I have recalibrated my ph probe but the error persists. I want to replace the probe. But I need to know what the head type and size is if the screws holding the back panel on. Does anyone know?

 

[Rocks reef]

I have a code01 error. I have recalibrated my ph probe but the error persists. I want to replace the probe. But I need to know what the head type and size is if the screws holding the back panel on. Does anyone know?

Are you not able to see the screws?