Sub-Zero Designer Wine (IW) Code 10 1 10: zone 1 evaporator thermistor open

What 10 1 10 means

On Designer Wine (IW) storage like the IW-18 and IW-30, 10 1 10 says the zone 1 evaporator thermistor is open. That sensor sits on the zone 1 cooling coil, and the control now sees no circuit there. Without a coil reading it cannot judge when zone 1 needs defrost or how cold the coil is running. The usual result is frost collecting on the zone 1 coil, weaker airflow and a zone that gradually loses its chill.

Common causes of 10 1 10

A zone 1 coil sensor plug that separated
A lead broken near the coil, often by ice
An open zone 1 evaporator thermistor
A control input that cannot see the sensor

✓ One safe check you can try

1. Check for frost behind the zone 1 rear vents. 2. Leave any ice alone; do not chip it. 3. Keep the zone 1 door shut and sealed. 4. Restart at the breaker after a minute. 5. Call us if frost spreads or 10 1 10 returns.

! Why to stop there

The coil sensor sits beside refrigerant tubing
Ice must be melted slowly, not broken off
An open circuit requires meter tracing

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

10 1 1010 1 10 questions

How is 10 1 10 different from 10 1 00?

10 1 00 is the zone 1 air sensor in the cabinet. 10 1 10 is the zone 1 coil sensor that guides defrost, so frost on the coil is more likely with this one.

Can I unplug the unit to defrost it?

You can, with towels down, and it may help for a few days. The code and the frost will come back until the coil sensor circuit is repaired.

What does the repair include?

Melting any ice, testing the circuit and replacing what failed, after you approve a written price. We back it with a 30-day workmanship warranty. Set aside a morning.