Appendix A: Troubleshooting
During setup and use of the Digital Dosing Additive Feeder, personnel may experience difficulties. Some of the problems encountered may be resolved using the following techniques.
A.1 General Troubleshooting - Unit Will Not Operate
•Check all connections and process wiring. Note that the process machine input MUST be wired to a DRY contact for Injection Molding (Section 3.1) and Extruder - Constant Applications (Section 3.1). For Extrusion - Proportional Applications (Extruder Follower OPTION) see Section 3.5.
•Ensure the correct Configuration Codes have been entered to configure the Digital Dosing unit for the process and installation, see Section 2.
A.2 Malfunctions - Error Codes
When a malfunction or error occurs, the controller displays the Alarm symbol 
and an error code. The code consists of an “A,” followed by an error number. The control unit will not operate until the malfunction or error has been corrected. To acknowledge and clear the
alarm, press the Stop key (
). Once the malfunction is corrected, press 
to begin dosing operations.
NOTE: Stop 
will not correct a malfunction or error.
Following is a table with the error codes, possible reasons for each code, and solutions to the problems presented.
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