Sub-Zero Designer Wine (IW) Code 15-2-01: zone 2 compressor will not shut off

What 15-2-01 means

Sub-Zero lists 15-2-01 for the legacy Designer Wine (IW) series, models like the IW-18 and IW-24, as a zone 2 compressor relay stuck closed. Instead of opening when zone 2 reaches its setting, the relay keeps the compressor powered. In practice zone 2 keeps cooling past the set point, the compressor runs without a break, and 15 2 01 appears on the display.

Common causes of 15-2-01

Stuck-closed contacts on the zone 2 compressor relay
Control board output that holds the relay on
A wiring short that bypasses the relay

✓ One safe check you can try

1. Watch the zone 2 reading for a drop below the setting. 2. If wine starts getting too cold, cut power at the breaker until service. 3. A single restart is fine to see if the code was a one-off. 4. Call us when 15-2-01 comes back.

! Why to stop there

A compressor that never rests wears out faster
Relay and board testing is done with power applied
Ordering the wrong board for an IW unit delays the repair

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

15-2-0115-2-01 questions

Can a stuck relay damage the compressor?

Running without breaks raises temperature and wear on the compressor. One day is unlikely to ruin it, but leaving the code for weeks is a risk worth avoiding.

Will turning the unit off fix 15-2-01?

It stops the compressor and protects the wine, but a welded relay usually stays stuck once power returns. The relay or board needs replacing. Expect to see the code again soon after restart.

What do you charge to diagnose it?

We quote the diagnosis and any repair in writing before work begins, so there are no surprises. Once fixed, our workmanship carries a 30-day warranty.