Code No. 12: Prevacuum / Depressurizing OR Drainage Fault
Problem Description:
Vacuum time exceeded – The device is having trouble generating vacuum at the right level in the required time.
Possible causes include:
- Worn or contaminated chamber door gasket
- A blocked or kinked red drain hose
- A full wastewater container (red cap)
• A vacuum pump malfunction - Problems with the safety valve, solenoid valves, or heat exchanger
- More severe failures involving the steam generator, sterilization chamber, or mainboard
Remember about the proper maintenance:
- Clean the tray weekly with a mild, chlorine-free detergent safe for aluminum. Rinse and dry thoroughly before reinstalling.
- Clean the door gasket every 100 cycles using warm water and a microfiber cloth. Do not use sharp tools or chemicals. Dry with the device open.
- Clean the inside of the chamber weekly using a mild, chlorine-free detergent. Dry with a soft cloth.
- Check the water tank monthly. If dirty, or empty, clean, and refill with proper water.
Remember!
- Use the proper water. Only demineralized or distilled water should be used. The total mineral content must be below 10 ppm, or in terms of conductivity, below 15 μS/cm.
- Replace the Magic Filter every 1,000 cycles, or 6 months, or when change color to amber is noticed.
How to solve it:
- Check and empty the used water from the bottle with the red cap.
- Ensure the red drain hose is not submerged, kinked, or pointing upward at any point — it must run downward along its entire length
- Clean the chamber door gasket to ensure proper sealing.
- Verify the autoclave has sufficient airflow around it for cooling.
If the issue persists, please contact Enbio Service by clicking the button below to fill out the service form.

