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Error 4

Error 4 — NOVRAM checksum error

Candy · Vending Machines

What does Error 4 mean?

This error indicates a problem with the non-volatile RAM (NOVRAM) checksum. This suggests a potential issue with the control board.

Common Causes

  • Control board malfunction
  • Data corruption in memory
  • Power surge affecting memory

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset vend prices as instructed in the manual.

  2. 2

    Perform a Test Vend to see if the issue resolves.

  3. 3

    If the error persists, the control board may need to be replaced.

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