Wolf M Series Wall Oven Code 2D30: Relay board 13.5 VDC supply error

What 2D30 means

Wolf M Series wall ovens, including the SO3050TM/S/T, show 2D30 when the relay board reports an error on its 13.5 VDC supply. The board needs that internal direct-current voltage to run its switching and sensing, so the oven may shut down or refuse to start. Expect the code on the display and a dead or limited oven. A weak supply can also make the display dim, flicker, or restart without warning.

Common causes of 2D30

13.5 VDC supply on the relay board
Power supply section of the relay board
Harness or connector carrying that supply
Control board that draws the supply down

✓ One safe check you can try

1. Confirm other kitchen outlets and lights have normal power. 2. Turn off the circuit breaker feeding the oven, give it two minutes, then reset it. 3. Try a basic Bake setting. 4. If 2D30 returns or the oven goes blank again, leave it off and call us. Never test the supply yourself.

! Why to stop there

Voltage problems need a meter and training to measure safely.
A weak supply can damage other boards if the oven keeps running.
We put the price on paper before starting, and you get 30 days of workmanship coverage afterward.

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.

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Other Wall Oven codes

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 0121Wolf M Series Oven Code 0121: upper right convection relay shorted 0221Wolf M Series Code 0221: Upper Bake Element DLB Shorted 1321Wolf M Series Code 1321: Upper broil element relay open 3031Wolf M Series Code 3031: Upper temperature probe shorted 1421Wolf M Series Code 1421: Upper left convection element relay open

2D302D30 questions

What does 13.5 VDC mean for me?

It is the low-voltage direct-current supply that powers the relay board itself. The oven reports 2D30 when that supply is not where it should be, which can take the switching section offline.

Could my house wiring cause 2D30?

It is possible but not typical. If other appliances and lights behave normally, the supply on the relay board is the likelier cause. We check incoming voltage first so you know the answer.

Is it safe to keep resetting the breaker?

One reset is fine for checking. Repeated resets do not fix a supply problem and can wear the board further, so please stop after the first try and schedule a visit.