Wolf CSO Steam Oven Code E62 / U3: supply too low, shown with U3

What E62 / U3 means

On Wolf CSO convection steam ovens such as the CSO24 and CSO30 series, E62 with U3 also means under voltage in the mains power supply or a mains calibration error. The oven shows the pair when the supply it measures falls below what it needs, and it stops cooking until that is resolved.

Common causes of E62 / U3

Under voltage in the mains power supply
Mains calibration error

✓ One safe check you can try

1. Turn the oven off at the breaker. 2. Switch off other heavy appliances sharing the circuit. 3. Restore power and try a short cycle. 4. If E62 / U3 returns, stop and call us.

! Why to stop there

The oven may be reading correctly or may need calibration, which needs testing.
We tell you whether the house supply or the oven is at issue.
You see the price in writing first, and repairs have 30 days of warranty.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Steam Oven codes

U0Wolf CSO Steam Oven Code U0: neutral or overvoltage problem U1Wolf CSO Steam Oven Code U1: L2 supply problem U2Wolf CSO Steam Oven Code U2: mains undervoltage Boiler scaled upWolf Convection Steam Oven Message Boiler scaled up: Descale required E26Wolf Convection Steam Oven Code E26: Climate sensor problem E87Wolf 24-Inch E Series Code E87: Exhaust slide valve jammed or shorted E42Wolf Convection Steam Oven Code E42: Water temperature sensor error E26Wolf 24-inch E Series Code E26: Break or loose contact in climate sensor, or blocked duct

E62 / U3E62 / U3 questions

Is E62 the same as E61?

They are close. E61 pairs with U2 and E62 with U3, and both list under voltage and calibration.

Will the oven recover when the supply is fine?

Often, yes. If E62 / U3 stays with a good supply, calibration or electronics may need service.

Can I ask my utility to check?

If lights dim or other items misbehave, it is worth a call. We can check the oven side.