If your Repeater Plus is showing a C-4 Error, you may be using incompatible tips with the sensor in your pipette. The two types of Combitips are shown below, Combitip Advanced and Combitip-Plus.
The older, rubber style sensor (see far right below), it not fully compatible with Eppendorf’s Advanced Combitip Syringes, especially if the rubber portion of the sensor is worn. This could be the cause of the Repeater Plus C-4 Error.
Recommendations:
To enable your pipette to use Combitip Advanced syringes, there are multiple recommendations to consider based on cost and time.
• Option 1: Order part number EP 4981802000 and install yourself. NOTE: There is always the possibility of other hidden internal damage. The pipette may need to be sent to an accredited service provider. It is harder to properly diagnosis hidden damage without seeing it first-hand.
• Option 2: Eppendorf NA Service can likely install the Combitip sensors and calibrate it for you. Eppendorf Service: https://serviceportal.eppendorf.com/en-US/login or call 800-645-3050.
• Option 3: Upgrade or trade-in your units for the Eppendorf Repeater M4
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