Sub-Zero BW-30/UW-24 Wine Code EC-13: lower section too cold

What EC-13 means

On BW-30 and UW-24 wine storage, EC-13 appears as EC 13 and is the lower cabinet cold temperature alarm. The lower zone has fallen below its expected range. A wine zone that is too cold can be as much of a concern as one that is too warm. You might see frost or condensation on lower bottles, a display reading under the set point, or a lower zone that feels much colder than the upper.

Common causes of EC-13

A low set point entered by mistake
A damper or airflow issue sending too much cold to the lower zone
A lower cabinet sensor that reads warmer than reality
A control that keeps cooling running

✓ One safe check you can try

1. Confirm the lower set point. 2. Use a thermometer to check the real temperature. 3. Clear air openings at the back. 4. Reset at the breaker once. 5. If EC 13 comes back, call us. 6. Move bottles that feel icy to the upper zone until the visit.

! Why to stop there

Damper and sensor checks need panel removal
The control and its outputs are on live circuits
Bottles near freezing are at risk

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 Wine Storage codes

45-2-01Sub-Zero Designer Wine (IW) Code 45-2-01: zone 2 light short circuit 90-5-80Sub-Zero Designer Wine (IW) Code 90-5-80: keypad module not talking to the control 90-H-80Sub-Zero Designer Wine (IW) Code 90-H-80: no communication with the high-voltage micro 90-H-82Sub-Zero Designer Wine (IW) Code 90-H-82: partial communication with the CCM 90-H-83Sub-Zero Designer Wine (IW) Code 90-H-83: bad data from the high voltage micro 90-H-84Sub-Zero Designer Wine (IW) Code 90-H-84: high voltage micro failed to initialize 95-1-00Sub-Zero Designer Wine (IW) Code 95-1-00: zone 1 door open too long EC 11Sub-Zero 400 Series Wine Code EC 11: upper cabinet too cold

EC-13EC-13 questions

Is a cold alarm worse than a warm one?

Both matter. Extreme cold can push corks and affect taste, so treat EC 13 as seriously as EC 12. Watch the lower zone with a thermometer until we arrive.

Could my lower sensor cause EC 13?

Yes. If the lower cabinet sensor reads warmer than the real temperature, the control keeps cooling. We test it along with the damper. The damper is checked because it can stick open and flood the lower zone with cold air.

How is the price set?

We test first and give a written price, with a 30-day workmanship warranty on our repair. Most lower zone cold alarms are settled by a damper or sensor repair completed during the first visit.