Why does my vending machine show 'Exact Change Only' and how to fix it

Overview

When a vending machine displays 'Exact Change Only', it typically indicates an issue with the coin mechanism or coin inventory. This guide will help you understand the common causes and provide steps to resolve the issue.

Common Causes

• Low Coin Inventory: The machine does not have enough change to return to customers.
• Coin Mechanism Jam: Coins may be stuck, preventing proper operation.
• Faulty Coin Mechanism: Malfunctions in the coin mechanism can trigger the message.

Solutions

Replenish Coin Inventory

1. Check Coin Levels: Open the machine and inspect the coin tubes.
2. Refill Coins: Add the necessary coins to ensure adequate change is available.
3. Test Vend: Perform a test vend to confirm the message is cleared.

Clear Coin Mechanism Jams

1. Inspect for Jams: Open the coin mechanism and look for any stuck coins.
2. Remove Obstructions: Carefully remove any jammed coins.
3. Reassemble and Test: Reassemble the mechanism and perform a test vend.

Replace or Repair Coin Mechanism

1. Check for Errors: Refer to the machine's manual for error codes related to the coin mechanism.
2. Swap Mechanism: If available, replace with a known-good coin mechanism to test.
3. Contact Support: If issues persist, contact the manufacturer for repair or replacement options.

Preventive Measures

• Regular Maintenance: Schedule routine checks and refills of the coin inventory.
• Keep Spare Parts: Maintain spare coin mechanisms and parts for quick replacements.

When to Seek Professional Help

• You are unable to resolve the issue after following the steps.
• The machine displays error codes that require technical support.
• You suspect a hardware fault beyond simple repairs.