Unox WC07 Error Code
Hood lack of communication warning.
Source: Unox/Unox_XACC-0513-EPLM_ServiceManualAll_CommercialKitchen.pdf
What does Unox WC07 mean?
WC07 is a lack-of-communication warning on the hood accessory. The oven can no longer communicate with the hood. The oven can still be used while the hood is unavailable and the warning flags the lost communication link, usually a cable or hood-board issue.
Symptoms
- WC07 warning referencing the hood
- Hood unresponsive to the oven
- Oven still usable without the hood
- Warning persists across restarts
Common causes
- Loose or faulty communication cable to the hood
- Hood board fault
- Connector problem at the hood or oven
- Hood not powered
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Diagnostic steps
Check hood power
Confirm the hood is powered, since it cannot communicate without power.
Inspect the data cable
With power off, check the communication cable and connectors between oven and hood.
Reseat and test
Reconnect the data cable and measure its continuity with a multimeter.
Service the hood board
Replace the hood board if communication cannot be restored and retest.
When to call a professional
WC07 affects the hood accessory. Diagnosing the communication cable and hood board requires accessing the hood electronics; have a qualified Unox technician investigate if reseating the cable does not restore communication.
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Other Unox Error Codes
Motor thermal protection alarm (permanent error) — the fan motor's thermal protection has tripped.
Safety thermostat alarm — the chamber safety thermostat has tripped above its limit.
Temperature probes alarm — a cooking chamber temperature probe is damaged or disconnected.
Communication error with the power board — the control board lost communication with the power board.
Gas alarm — a fault in the gas burner/ignition system (split into multiple AF23 conditions on later software).
Wrong position of Pollo valve.
Trolley is missing.
Tank missing or safety thermostat fault.
Chamber ceiling temperature too high.
Chamber over-temperature condition (Case 1: T > 150 °C / 302 °F; Case 2: T < 150 °C).
Single-point or multi-point core probe completely damaged.
Chamber temperature probe warning.