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Error code · Wine Storage

Sub-Zero Designer Wine (IW) Code 15-1-00: zone 1 compressor relay will not close

On legacy Sub-Zero Designer Wine (IW) units such as the IW-30 and IW-18, 15-1-00 tells you the zone 1 compressor relay is stuck open. The relay on the control board switches the compressor for zone 1;…

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Code
15-1-00
Appliance
Wine Storage
Brand
Sub-Zero
Warranty
30-day workmanship

What 15-1-00 means

On legacy Sub-Zero Designer Wine (IW) units such as the IW-30 and IW-18, 15-1-00 tells you the zone 1 compressor relay is stuck open. The relay on the control board switches the compressor for zone 1; stuck open means the board asks for cooling but the contacts never close, so the compressor serving that zone does not start. Expect zone 1 to warm slowly while the code sits on the display as 15 1 00.

Common causes of 15-1-00

  • A zone 1 compressor relay on the control board with contacts that will not close
  • A control board that no longer drives the relay
  • Wiring between the board and the compressor circuit
✓ One safe check you can try

1. Note the time the code appeared and the zone 1 temperature. 2. Move your most valuable bottles from zone 1 to another zone if there is room. 3. Try one breaker reset of about a minute. 4. If 15-1-00 returns, keep the door closed and call us.

! Why to stop there
  • The relay sits on a board that switches line voltage to the compressor
  • Testing it means working on live circuits inside the unit
  • A wrong diagnosis can stress the compressor
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

45-2-00Sub-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 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
15-1-0015-1-00 questions
Will zone 1 stop cooling completely?

It can. With the relay stuck open, the compressor for zone 1 does not get power, so that zone warms toward room temperature over time. Move valuable bottles if you can and book service promptly.

What is the difference between 15-1-00 and 15-1-01?

15-1-00 means the zone 1 compressor relay will not close, so the compressor stays off. 15-1-01 is the opposite: the relay will not open, so the compressor keeps running. The relay is the same, the result is different.

Is this a sealed system repair?

Not usually. The code points to the relay and its control, not the refrigerant circuit. We test the relay and board, quote the repair in writing first, and back the work with a 30-day warranty.

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Still seeing 15-1-00?

A technician diagnoses it on site and gives you the price in writing before any work starts.

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