Sub-Zero Freezer Error Code --

The -- display on a Sub-Zero freezer means the unit is in shutdown mode. All cooling functions, including the compressor and fans, are suspended while the lights and door alarm remain active. This is a commanded state, not a fault code, and the unit has not detected a component failure. Pressing the COLDER key on the control panel will exit shutdown mode and restore normal operation.

Because shutdown mode disables all cooling, the freezer interior will gradually warm up while the unit is in this state. Food safety depends on how long the unit has been in shutdown mode and how full the freezer is. If the unit has been in shutdown mode for more than a couple of hours, check internal temperatures before assuming food is still safe. Exit shutdown mode immediately to restore cooling.

If the issue is simply an accidental activation of shutdown mode, there is no repair cost since pressing the COLDER key resolves it. If the cause is a faulty keypad, replacement parts and labor typically range from $150 to $400 depending on the model and service provider. A failed control board is a more significant repair, generally ranging from $400 to $900 or more including parts and labor for a Sub-Zero unit.

Press the COLDER key on the control panel to end shutdown mode and restart all unit functions. The display should return to a temperature reading and the compressor should begin operating within a short time. If the COLDER key does not respond, inspect the keypad for damage or contact a technician to evaluate the control board.

The correct way to clear the -- display is to press the COLDER key, which is the designated control to exit shutdown mode. A full power reset by unplugging the unit or cycling the breaker may also work, but the unit could return in shutdown mode depending on the cause. The COLDER key press is the first and simplest step to try.