Unox WF26 Error Code
Rotor valve EG2 fault.
Source: Unox/Unox_XACC-0513-EPLM_ServiceManualAll_CommercialKitchen.pdf
What does Unox WF26 mean?
WF26 is a warning related to rotor valve EG2 in the oven's water/steam circuit. The control has detected that valve EG2 is not operating correctly. As a warning the oven continues with restricted function while indicating this valve needs service.
Symptoms
- WF26 warning on the control panel
- Steam or rotor function impaired
- Valve EG2 not actuating on command
- Warning recurs during the affected cycle
Common causes
- Rotor valve EG2 stuck or faulty
- Valve coil failure
- Wiring fault to EG2
- Scale or blockage in the valve
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Diagnostic steps
Power down and locate EG2
Turn off power and identify rotor valve EG2 in the water/steam circuit.
Check valve operation
Verify EG2 actuates when energised and is not blocked by scale.
Test coil and wiring
Measure the valve coil and check the wiring with a multimeter.
Replace the valve
Replace rotor valve EG2 if it does not operate correctly and retest.
When to call a professional
WF26 concerns a steam-circuit solenoid valve. Testing the coil, wiring and replacing the valve is electrical and plumbing work for a qualified Unox technician if a basic 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.