Unox WC05 Error Code
Hood fumes temperature warning.
Source: Unox/Unox_XACC-0513-EPLM_ServiceManualAll_CommercialKitchen.pdf
What does Unox WC05 mean?
WC05 is a fumes temperature warning on the hood accessory. The temperature of the fumes handled by the hood is outside the expected range. The oven can still be used while the hood function is impaired and the warning flags the abnormal fumes temperature.
Symptoms
- WC05 warning referencing the hood
- Abnormal hood fumes temperature
- Reduced extraction or condensation performance
- Warning recurs during operation
Common causes
- Restricted hood exhaust or airflow
- Hood fumes temperature probe out of range
- Hood not operating at correct speed
- Wiring fault to the fumes probe
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Diagnostic steps
Check hood airflow
Inspect the hood exhaust path for restriction or blockage.
Verify the fumes probe
Confirm the hood fumes temperature probe is connected and reading plausibly.
Check hood operation
Verify the hood fan runs at the correct speed during extraction.
Service the probe
Replace the fumes probe or repair the wiring if the temperature reading is wrong.
When to call a professional
WC05 affects the hood accessory and the oven can still be used. Verifying the fumes probe and hood operation requires accessing the hood; have a qualified Unox technician investigate if basic airflow checks do not clear it.
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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.