What Does The Power DN Error Code On You Tuttnauer Autoclave Mean?

Once you place your equipment into your autoclave and turn it on, it’s important that the cycle be allowed to run until it’s complete, without interruption. Depending on the size of the load, the cycle time can vary from 15 to 45 minutes. If something should happen with you Tuttnauer autoclave’s power source you’ll get a Power DN error code which means, for some reason, the power was off and the cycle was interrupted.

There’s certainly no cause for panic, power can go down for any number of reasons. Somebody tripped over a cord or Mother Nature knocked out a power line. The Power DN error code simply lets you know there was a disruption in the cycle and you may have to start the cycle over again when the power resumes. Here’s what you can expect when you see that error code:

When the power is reconnected your autoclave will automatically attempt to resume the cycle where it left off.

If the power went down while the machine was in the Heat Up phase then heating will resume. However, if the power was off long enough there may not be enough water left in the chamber. If that’s the case, the cycle will be aborted and you’ll have to start over again.

If the powers failure happened during the sterilization phase of the cycle the machine will automatically check to make sure the temperature in the chamber hasn’t dropped more than 4.5º F. If it has, the cycle will be aborted and you’ll have to start over with a new cycle.

Once the power is turned on again the exhaust and dry cycles will automatically resume.

If you have liquids in your autoclave when the power goes down, you’ll have to start a new cycle. The system won’t allow a fast exhaust after a power failure.

It’s important to understand that when your Tuttnauer autoclave displays a Power DN error code that means the cycle was interrupted. Even if it only had a minute to go, it’s still not a complete cycle and your equipment may not be properly sterilized. If the power was only off for a short period of time your machine will automatically complete the cycle. However, if it doesn’t, because of one of the reasons listed above, you’ll have to start a new cycle, regardless of how little time was left when the power went down. Otherwise your tools and equipment won’t be properly sterilized.

It’s also important to note that your autoclave tape may indicate that the proper temperature levels were met. However, this does not mean your equipment has been sterilized. If the cycle was interrupted and doesn’t automatically pick up where it left off, then you’ll have to repeat it from the very beginning to ensure proper sterilization of your equipment.