• Take the refrigeration unit out of the vending machine.
• Determine what the possible problem is by checking for the following:

1. Low Freon R134A
2. Broken Relay
3. Broken Temp Relay
4. Broken Evaporator or condensor fans
5. Block in Cappilary line

• Repair the problem
• Vacuum the system from moisture
• Refill with appropriate R134A amount
• Re-install system back in machine