Unox WF37 Error Code
Lack of water, or EL1 or EG1/EG2 valve fault.
Source: Unox/Unox_XACC-0513-EPLM_ServiceManualAll_CommercialKitchen.pdf
What does Unox WF37 mean?
WF37 is a warning for lack of water or a fault in valve EL1 or EG1/EG2, closely related to WF36. The oven is not receiving the water it expects through these valves. As a warning it continues with limited water-dependent function while flagging the supply or valve problem.
Symptoms
- WF37 warning on the control panel
- Insufficient or no water/steam
- Affected valve not delivering water
- Warning recurs when water is requested
Common causes
- Water supply off or low pressure
- Clogged filter or inlet
- Valve EL1 or EG1/EG2 stuck or faulty
- Wiring fault to a valve
- Scale or blockage in a valve
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Diagnostic steps
Check the water supply
Confirm the water tap is open and at adequate pressure.
Inspect filter and line
Check the inlet filter and water line for blockage or kinks.
Test the valves
With power off, verify EL1 and EG1/EG2 actuate and are not stuck or scaled.
Repair or replace
Restore faulty wiring and replace any valve that does not operate, then retest.
When to call a professional
WF37 starts with operator checks of supply and filter. If water is present and a valve still fails, testing and replacing the solenoid valve is electrical and plumbing work for a qualified Unox technician.
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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.
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