What to do if my Testomat 808 Analytical Instruments show error E2?
- JJesse LyonsAug 3, 2025
If the Testomat Analytical Instruments show error E2, indicating a measuring fault, begin by checking if the indicator bottle is empty and ensure the indicator matches the quantity in the bottle. Only use approved indicators for the Testomat 808, as others can cause errors. Also, verify the stirring bar is present and turns, the pump supplies indicator, and the dosing needle isn't blocked or has a damaged O-ring. Make sure suction and pressure hoses aren't drawing secondary air, and check the suction lance for air bubbles escaping from the dosing needle.