Wolf M Series Code 1421: Upper left convection element relay open

What 1421 means

Wolf M Series wall ovens report 1421 when the relay feeding the upper oven's left convection element is read as open. The lower oven shows 1422. The element is not receiving power when the control asks for convection heat, so you see the code and convection cooking runs cooler or uneven. Owners typically notice slow preheating or a mode that no longer heats the way it used to.

Common causes of 1421

The upper left convection element relay is open
Damaged wiring or a connector on the left convection element
The left convection element has failed

✓ One safe check you can try

1. Cancel cooking and wait until the cavity is cool to the touch. 2. Check that the oven's circuit breaker is fully on. 3. Restore power after a one-minute reset and try again. 4. A repeat code means the circuit needs testing, which we do.

! Why to stop there

An element relay and the element behave identically when they fail, so only a meter test tells them apart.
On this code the cause may also be damaged wiring or a connector on the left convection element, or the left convection element has failed, so we rule each out before we quote.

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 Wall Oven codes

0121Wolf M Series Oven Code 0121: upper right convection relay shorted 0221Wolf M Series Code 0221: Upper Bake Element DLB Shorted 0321Wolf M Series Oven Code 0321: Broil Relay Shorted on the Upper Element 0421Wolf M Series Code 0421: upper left convection relay shorted 0630Wolf M Series Oven Code 0630: Auxiliary DLB Shorted 2A30Wolf M Series Code 2A30: Microprocessor communication failure 2C20Wolf M Series Code 2C20: Relay board network failure 1231Wolf M Series Code 1231: Upper bake element DLB open

14211421 questions

Is convection cooking safe while 1421 shows?

The oven will not overheat from this code, since the left convection element simply is not powered. Cooking will be uneven, though. Standard bake may still work. We test the relay and element before replacing anything.

Can I cook with other modes meanwhile?

Often, yes, because only one heating circuit is affected. You may see uneven results. We recommend short use only and a prompt visit, since one weak circuit can stress the others.

How do I know I am not paying for the wrong part?

We test the relay output and the element with a meter, tell you which one failed, and put the price in writing for your approval. The 30-day workmanship warranty covers what we install.