Unox WF34 Error Code
EG1 or EL2 valve fault.
Source: Unox/Unox_XACC-0513-EPLM_ServiceManualAll_CommercialKitchen.pdf
What does Unox WF34 mean?
WF34 is a warning indicating a fault with valve EG1 or EL2 in the oven's water/steam circuit. The control has detected that one of these valves is not operating as expected. As a warning the oven continues with limited function while flagging the affected valve.
Symptoms
- WF34 warning on the control panel
- Steam or water function impaired
- Valve EG1 or EL2 not actuating correctly
- Warning recurs during the affected cycle
Common causes
- Valve EG1 or EL2 stuck or faulty
- Valve coil failure
- Wiring fault to the valve
- Scale or blockage in the valve
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Diagnostic steps
Power down and identify the valves
Turn off power and locate valves EG1 and EL2 in the water/steam circuit.
Check valve operation
Verify each valve actuates when energised and is not blocked by scale.
Test coils and wiring
Measure the valve coils and wiring with a multimeter to find the faulty one.
Replace the faulty valve
Replace whichever of EG1 or EL2 does not operate correctly and retest.
When to call a professional
WF34 points to one of two solenoid valves. Isolating and replacing the faulty valve is electrical and plumbing work for a qualified Unox technician if a basic operation check does not clear the warning.
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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.