Sub-Zero BW-30/UW-24 Wine Code EC-10: upper zone too warm

What EC-10 means

Classic BW-30 and UW-24 wine units show EC-10, displayed as EC 10, as the upper cabinet warm temperature alarm. The upper zone has stayed warmer than its expected range. It is an alarm about temperature, not a sensor or board code, and 400 Series wine units with the 400-2 control use the same meaning. Typical signs are bottles in the upper section feeling warm, the compressor running long, or a door that did not latch.

Common causes of EC-10

An upper door left ajar or a poor seal
A large load of room-temperature bottles
Blocked air openings in the upper zone
A cooling problem affecting the upper section

✓ One safe check you can try

1. Close the upper door firmly. 2. Check the gasket for folds or tears. 3. Leave space between bottles and the back wall. 4. Clear the grille. 5. Wait a few hours; if EC 10 repeats, call us. 6. Keep a log of the times EC 10 shows so we can match it to door use.

! Why to stop there

Finding the cause of weak cooling needs testing of fans and the sealed system
Panels hide live wiring
Wine can lose quality if the upper zone stays warm for days

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

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 13Sub-Zero 400 Series Wine Code EC 13: lower cabinet cold alarm EC 15Sub-Zero 400 Series Wine Code EC 15: unit not cooling Service flashingSub-Zero 400 Series Wine "Service" Flashing: compressor ran too long 45-2-00Sub-Zero Designer Wine (IW) Code 45-2-00: zone 2 lights not drawing power 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

EC-10EC-10 questions

Does EC-10 mean my unit is failing?

Not always. After loading warm bottles or leaving the door open, the upper zone can trigger EC 10 and clear on its own once it recovers.

Is EC 10 the same on the 400 Series?

Yes. 400 Series wine units with the 400-2 control use EC 10 as the upper cabinet warm temperature alarm too. Owners of a 424 or 430 can follow the same steps listed on this page before calling.

What do you check during the visit?

Door seal, airflow, fans and cooling performance. You get a written price first and a 30-day workmanship warranty on our repair. Most upper zone warm alarms trace back to the door seal or blocked air openings.