Vendo Error Codes

Reviewed by vending machine technicians · Last updated July 30, 2026

6 diagnostic codes · Glass-Front Bottle/Can Vendor, Vendo Vue Glass-Front Vending Machine, Vendo Vue/Vendo 511 Glass-Front Vending Machine

F1 — Glass-Front Bottle/Can Vendor WARNING

Vend sensor error — product was not detected falling past the delivery sensor within the expected ti…

F4 — Glass-Front Bottle/Can Vendor CRITICAL

Picker arm jam — the robotic picker mechanism failed to complete its X-Y movement cycle

F7 — Glass-Front Bottle/Can Vendor INFO

Card reader MDB communication lost — cashless payment system not responding to VMC polling

V21 — Vendo Vue Glass-Front Vending Machine WARNING

Door Switch Fault — the main door switch is reporting an open or closed state that does not match th…

E1 — Vendo Vue/Vendo 511 Glass-Front Vending Machine CRITICAL

Evaporator Thermistor Error — the evaporator coil temperature sensor is reading out of range or has …

E3 — Vendo Vue/Vendo 511 Glass-Front Vending Machine WARNING

Condenser Thermistor Error — the condenser coil temperature sensor is reading out of range, which ca…

Vending DTC Hub — Independent vending machine diagnostic reference. Error code data compiled from manufacturer service manuals, field technician reports, and publicly available equipment documentation. Not affiliated with any vending machine manufacturer. All brand names are trademarks of their respective owners.