"Ink Tank Error" or "Unknown ink cartridge" message on the SendPro C Auto

Ensure you install the correct ink cartridge if the Ink Tank Error or Unknown ink cartridge messages appear.
Products affected: SendPro® C Auto (9H00)

Issue

An Ink Tank Error or Unknown ink cartridge message appears when you install an ink cartridge.

Cause

You have installed the ink cartridge for a smaller postage meter.

Resolution

Ensure you install the correct ink cartridge. The correct ink cartridge for the SendPro Auto is: 765-9. The smaller ink cartridges 795-5 or SSl-798-0 will fit into the carriage but will not work.

Visit our supplies site to order the correct cartridge.

UPDATED: April 07, 2025