Sub-Zero UW-24 Wine Code 2: factory programming error

What 2 means

On Undercounter Wine Storage models such as the UW-24, UW-24/S and UW-24/O, this code appears on the display as EC 02 and means a factory programming error. The control has found that its stored setup data does not match what it needs to run the unit. Because the problem sits in the control itself, it will not clear with a door check. The BW-30 can also show EC 2. Expect a unit that may not cool, ignores settings, or keeps restarting.

Common causes of 2

Corrupted setup data in the control
A control board that was not programmed correctly
A power surge that disturbed the stored data
A replacement board that does not match the model

✓ One safe check you can try

1. Write down the code exactly as shown. 2. Turn the breaker off for two minutes, then back on. 3. If the code clears, watch the unit for a day. 4. If EC 02 stays, keep the door closed and move valuable bottles. 5. Have the model and serial number from the rating plate ready when you call.

! Why to stop there

Reprogramming or replacing the control needs the correct model data
The board sits on a live circuit
A mismatched board can cause new problems

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 Wine Storage codes

22 questions

Can a power outage cause code 2 on my UW-24?

Sometimes. A surge or brownout can disturb the stored setup. A single breaker reset is worth trying; if EC 02 stays, the control needs service.

Is the BW-30 version the same?

The BW-30 can also show EC 2. The repair path is similar: we confirm the control and the model setup before deciding on a board.

How much does a control repair cost?

We confirm the problem, then give a written price before any work. Board work carries our 30-day workmanship warranty. If the board only needs its model data restored, the cost is lower than a full board replacement.