Hello good day! I just purchased an Alkatronic and did the installation yesterday, did all the calibrations and dilution of the reagent as you advise, and the device after the first test run hangs in code 03, check pump C. The hose is attached normally, there is no air in the hoses I even redid the reagent dilution to make sure there was no mistake, and nothing! I wonder if there is anything else I can try to get the device to run. Thank you very much for your attention.