Wolf CSO Steam Oven Code E61 / U2: supply voltage too low

What E61 / U2 means

On Wolf CSO convection steam ovens, including the CSO30 series, E61 with U2 means under voltage in the mains power supply, or a main calibration error. The oven shows the pair when it sees a supply lower than it needs, and it will not run until the supply is right.

Common causes of E61 / U2

Under voltage in the mains power supply
Main calibration error

✓ One safe check you can try

1. Kill power at the panel. 2. See if other large appliances were running at the same moment, and turn them off. 3. Restore power. 4. When E61 / U2 returns, keep the oven off and phone us.

! Why to stop there

Low voltage can come from the house or the oven's measurement.
We separate the two so you do not pay for the wrong repair.
You get a written estimate first and a 30-day 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

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 E87Wolf Convection Steam Oven Code E87: Exhaust slide valve stuck

E61 / U2E61 / U2 questions

Can other appliances cause E61?

Heavy loads on a weak supply can pull voltage down. Try the oven with them off.

How does E61 differ from E62?

E61 pairs with U2 and E62 pairs with U3. Both list under voltage and a calibration error.

Should I call an electrician?

If low voltage is present on other appliances, yes. Otherwise we can check the oven.