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Sub-Zero EC 06: what it means and what to do

Applies to: Older Sub-Zero 600 and 700 Series·Reviewed by Doug Major, Vantage Appliances
The short answer

EC 06 on an older Sub-Zero 600 or 700 Series is a temperature sensor error: the control is reading one of the temperatures incorrectly. It isn't something you can repair yourself, but most units keep cooling with an EC 06 showing.

EC 06 (the service indicator will also be flashing) is a temperature sensor error. The electronic control has detected that it is reading one of the temperatures incorrectly.

It is not a user-repairable error. The good news is that most units can tolerate an EC 06 and still continue to cool.

What to do if EC 06 is displayed

  1. Clean the condenser, especially if a second code, EC 40 or EC 50, is also showing.
  2. Monitor the fridge and freezer temperatures.
  3. If the condenser is clean and temperatures are at or close to normal, turn the power off to the unit, wait a minute, and restore power.
  4. If EC 06 comes back, contact your factory-certified servicer for diagnosis.

EC 05, EC 06, EC 07 and EC 08 are all sensor (thermistor) errors on the older 600 and 700 Series. Newer Sub-Zero models use completely different codes.