The most frequently used posts on this blog site are for error 35. Last week after running for 15 minutes I expected to get the first machine stop/check. As soon as it started, I got an error 35, that recurred numerous times.

Unable to clear the error by rinsing the effluent drain line with a syringe, and insuring there were no pinches or kinks in the line, I called NxStage Technical Support. They walked me through multiple procedures in an attempt to diagnose the problem.  

One of those was to clamp the two yellow clamps on the effluent line and disconnect the line. Next we put the short line coming from the Pureflow into a bucket and restarted the cycler. This immediately caused another error 35, with the pumps not starting, and nothing coming out of the short effluent line. This proved there was no blockage in the long effluent line that runs to the bathroom and that the problem was in the cycler or the cartridge. If the pump restarted without an error 35 and drained into the bucket, it means there is a blockage in the long line that goes to the drain.

The technician advised that I had a bad cartridge, and that I should do a manual rinse back. We did the manual rinse back, and I would simply set-up again and start over.

After using a new cartridge and setting up, I started treatment and ran normally for three machine stop/checks. Then, just like my previous run I immediately got an error 35, that recurred multiple times, without the pump starting. I called NxStage again, and was walked through numerous steps to determine the problem, and it resulted in needing a replacement cycler.

The final determination of whether an error 35 means you need a replacement cycler is if you get the error 35 immediately after a cycler stop/check, and the errors persists, and the pump never actually starts.