On Sub-Zero Designer refrigerators and columns such as the DET3050CI and DEC3050R, 10-2-12 indicates the zone 2 evaporator thermistor reading is unstable. Instead of steady changes, the value jumps, which the control cannot trust. Defrost decisions…
On Sub-Zero Designer refrigerators and columns such as the DET3050CI and DEC3050R, 10-2-12 indicates the zone 2 evaporator thermistor reading is unstable. Instead of steady changes, the value jumps, which the control cannot trust. Defrost decisions for the zone 2 coil depend on this sensor, so erratic readings can lead to too much or too little defrosting. You may see the code come and go, frost on the rear panel, or zone 2 temperatures that wander.
1) Jot down the times 10-2-12 appears and clears. 2) Look at the zone 2 back panel for a frost layer heavier than a light dusting. 3) Keep zone 2 closed as much as you can. 4) Restart the unit at the breaker once. 5) Arrange service if the code keeps coming back.
The zone 2 coil sensor reading jumps around instead of changing smoothly. The control cannot trust a value like that, so defrost for zone 2 may start too early, too late or not at all.
Yes. A connection that makes contact only part of the time is a common cause, along with a sensor approaching the end of its life or a wire cracked near the coil.
We watch the live reading, test the sensor and its connectors, then repair or replace the part responsible. The written price comes before any work.
A technician diagnoses it on site and gives you the price in writing before any work starts.
