Thetford C400 Cassette Level Storage Prep

Use this C400 support router to prepare model, cassette, level, cleaning, and storage details.

Owner-safe checklist

• Record the C400, C402C, or C403L model, serial, cassette status, level indicator state, flush behavior, and storage condition.
• Save photos of the model label, cassette label, controls, and visible indicators from normal owner access.
• Stop using the toilet for leak, odor, overflow, or freeze risk and contact Thetford support or qualified RV sanitation service.

Official sources

• Thetford C400 Series Support Router