If you're looking for help fixing your SubZero Refrigerator, look no further! Our comprehensive SubZero Refrigerator error code guide will explain common issues, provide tips, and show you how to read your model's error codes.

CODE: EC40 
PROBLEM: Excessive Freezer Compressor Run – This means that the freezer won’t stop running. 
FIX: Depending on the internal temperature of the refrigerator, you will need to do one of two things: 
If the internal temperature is high: If the refrigerator door is not open, but the temperature is still high, it is suggested that you contact a certified appliance repair service. 
If the internal temperature is normal: Clean condenser 

CODE: EC50 
PROBLEM: Excessive Refrigerator Compressor Run – This basically means that your refrigerator runs constantly or too much. Compressor run time is affected by the amount of food in the refrigerator, temperature of that food, external and internal temperature and length of time the door is left open. 
FIX: If you receive error code 50, there are a few different things you can do to fix it: 
Make sure nothing is blocking the door from closing and sealing correctly. 
Clean the condenser if it is dusty or dirty. 
Remove anything blocking the condenser fan blade, or tighten it if it’s loose. 
See if the sealed system is leaking. 

CODE: EC24 
PROBLEM: Defrost Underheat – This means that the defroster is not heating high enough to do its job. 
FIX: An EC24 code fix also depends on the temperature: 
We recommend calling a Sub-Zero appliance repairman if the temperature is high. 
If the temperature is normal: 
Make sure the condenser is clean and clear of any dust or debris. 

CODE: EC06 
PROBLEM: Thermistor Inconsistencies – This means that the evaporator thermistor in the refrigerator read inconsistent temperatures on several occasions. It can also mean that the thermistor shorted for longer than ten seconds or read open. 
FIX: Sub-Zero recommends contacting a Factory Certified Appliance Repair Center to service your refrigerator. 

CODE: EC20 
PROBLEM: Faulty Defrost Bi-Metal Operation – A bi-metal defrost thermostat prevents the refrigerator from overheating while it’s defrosting. 
FIX: Turn of the refrigerator circuit breaker. Wait 30 seconds and turn it on again. If error code EC20 does not resolve itself, contact a Sub-Zero certified repair center.

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