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Error 3

Error 3 — Loss of coin mechanism communication

Candy · Vending Machines

What does Error 3 mean?

The controller has lost communication with the coin mechanism. This could be due to a connection issue or a problem with the coin mechanism itself.

Common Causes

  • Loose or damaged coin mechanism harness
  • Coin mechanism malfunction
  • Internal communication error

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the harness connection between the coin mechanism and the controller.

  2. 2

    Ensure the coin mechanism is properly seated.

  3. 3

    If possible, test the coin mechanism for functionality.

  4. 4

    Contact support if the connection appears secure and the issue persists.

Browse all codes in this manual (12)
Verified technical data. Last updated: April 2026

Related Faults

1 flashOne flash (LED) — Bill box is full2 flashesTwo flashes (LED) — Bill box lid not latched3 beepsThree beeps — Unsuccessful test vend
Source: Candy Vending Machines
Open Manual (Page 21)Search more codes in this manual