How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Justin Your Own Question
Justin, Appliance Technician
Category: Appliance
Satisfied Customers: 829
Experience:  Owner of Shaffer's Appliance Service
Type Your Appliance Question Here...
Justin is online now
A new question is answered every 9 seconds

My Sub zero Fridge/ side by side has indicator light. EC

Resolved Question:

My Sub zero Fridge/ side by side has indicator light.

"EC Service that fluxes between 40 and 24 and 05.

what's going on? Help!
Submitted: 6 years ago.
Category: Appliance
Expert:  Justin replied 6 years ago.
Let me research. I know what EC 40 and EC 24 are, let me check on the 05.
Expert:  replied 6 years ago.

Ok, 40 is excessive freezer compressor run which means the control basically thinks the unit has been running too long to reach temperature.


24 is a defrost under heat. This means the control didn't see the defrost thermostat open.


05 is a refrigerator cabinet thermistor reading open for 10+ seconds.


All these issues are most likely a fluke, or thermistor errors. Press and hold the alarm button for 15 seconds until the service clears. If the error(s) come back, you'll want to call sub zero to get a servicer to your home. These units are very complex and aren't really meant to be serviced by a novice.

Justin and other Appliance Specialists are ready to help you

Related Appliance Questions