Sub-Zero reference · Denver, CO
EC 05 is the control reporting that the refrigerator compartment sensor went open, shorted, or swung about until it stopped being usable. Sub-Zero Pro Repair Denver meters the circuit back to the board first — (720) 704-2791.
Sub-Zero Pro Repair Denver — (720) 704-2791
Built-In 600-3 Series control, where the numbered codes are stored
Sub-Zero prints two actions against this code and then stops. Connections and continuity to J1 first. Resistance at the sensor second, and the part replaced only where the figure falls outside the window.
We keep that sequence because this is the sensor whose reading the panel puts on the door. On a cabinet that is not cooling, working out which of the thermometer and the refrigeration is lying has to come first.
Both temperatures reading sensibly, and the entry sitting in memory regardless
A dropout the control caught and wrote down. Ten seconds of open or short is enough, and the record stays on after the circuit has recovered.
No band covers this one — quoted after the diagnosis
A fresh-food side running colder than the number on the door admits
The display cannot audit the part it depends on. This is the sensor the panel prints, so a separate thermometer is the only second opinion available in the kitchen.
Defrost circuit: heater, terminator, thermistor $280–$690
EC 06 stored beside it on the same cabinet
Both fresh-food sensors land on one connector at the board. A matching pair gets read at that end before two parts are ordered.
No band covers this one — quoted after the diagnosis
Generally yes. Cooling has not stopped; only the control's view of it has, and a compartment will hold its set point for a long while on an unreliable reading. What you lose is the right to trust the door. Keep a thermometer on the middle shelf until the circuit has been metered.
Where this sits
Bench notes from
Tobias Reinhardt
Checked against
Sub-Zero Built-In (600-3) service manual #7003192 Rev C: Error Code Table p. 8-2, Error Code Troubleshooting Guide p. 8-3, General Troubleshooting item M
Reading it with you
Tell us what the panel is showing and we will tell you what we would measure first. Sub-Zero Pro Repair Denver — (720) 704-2791. On the road 8:00 am – 8:00 pm, seven days.
Describe the symptom on the phone and you will usually hear what it probably is before anyone drives out. A $89 service call covers the visit and the full diagnosis in Denver, and comes off the repair once you approve it.