Sub‑Zero Pro Denver, CO

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Reference · Denver, CO

Sub-Zero error codes and display states

A Sub-Zero built-in does not print sentences. It stores a number, lights a word, or puts letters where a temperature belongs. Each of those means one specific thing, and none of them names the part that failed.

Everything below is written against Sub-Zero's own service documentation for the generation named on each page, and nothing is published that those documents do not support. Codes live in the control's memory and are read in Diagnostic Mode; indicators live on the panel and mean something different again. Start from what you can actually see, and the page will tell you what the control is watching, what we put a meter or a thermometer on first, and what that reading usually turns out to be.

The two pages this section is built around are the run-time readings, EC 40 and EC 50, because a compressor that will not stop is what most Denver cabinets are really reporting. If the answer turns out to be the sealed system, the arithmetic continues at repair or replace.

Read it out to us and we will tell you what we would measure first. Sub-Zero Pro Repair Denver — (720) 704-2791

Meter probes held on a green control board behind the removed lower panel of a stainless refrigerator, seen from overhead with the loom alongside

Numbered codes

What the control stores in memory and shows before the temperatures in Diagnostic Mode.

  1. 01 EC 40 EC 40 is a run-time reading, not a verdict on the compressor
  2. 02 EC 05 EC 05: the refrigerator compartment sensor stopped answering
  3. 03 EC 06 EC 06 is the coil sensor, not the one on the display
  4. 04 EC 07 EC 07 is the freezer compartment sensor, and the run-time list starts here
  5. 05 EC 08 EC 08 watches the freezer coil, and defrost depends on it
  6. 06 EC 20 EC 20 stacks an under-heat on a silent feedback wire
  7. 07 EC 21 EC 21 records heat where its neighbours record cold
  8. 08 EC 22 EC 22 is one wire, and the freezer is usually fine
  9. 09 EC 23 EC 23 pairs an overheat with a silent feedback wire
  10. 10 EC 24 EC 24: heat was called for and did not arrive
  11. 11 EC 30 EC 30 counts how long the fill valve stayed open
  12. 12 EC 50 EC 50 is the same run-time reading on the fresh-food side
  13. 13 F · r · FE · rE F, r, FE and rE: the letters before the temperatures

Display states

Words, letters and lit symbols on the panel. None of these is a numbered code.

  1. 01 SERVICE The SERVICE word is flashing on the panel
  2. 02 VACUUM CONDENSER The VACUUM CONDENSER indicator is lit
  3. 03 EE EE where a temperature should be
  4. 04 Chime The door alarm sounds with the door shut
  5. 05 Blank The display is dark and the lights still work
  6. 06 OFF OFF in the display, and the two ways it gets there
  7. 07 Bell The bell icon is lit, and it is not a fault
  8. 08 Sr Lights on, nothing cooling: showroom mode

Procedures

How a reading is taken, cleared, and taken again once something has been changed.

  1. 01 Recheck Clean the condenser, then read it again
  2. 02 Diagnostic How a Sub-Zero gives up what it has stored
  3. 03 15 seconds Clearing the indicator, and why it comes back
  4. 04 After a cut What a power interruption leaves on the panel
  5. 05 No codes No code display: what we measure on an older cabinet instead
An undercounter wine cabinet set into dark walnut, its glass door swung fully open on six empty light-wood bottle shelves above a stainless vent grille

Tell us what the panel says

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.

(720) 704-2791 Book a slot

On the road 8:00 am – 8:00 pm, seven days · the phone never goes quiet

  • Read before quoted

    Stored codes first, then air and coil temperatures, then amp draw at start-up, then pressures only if everything in front of them has been ruled out. The readings decide the quote, not the other way round.

  • Refrigeration only

    Built-ins, panel-ready columns, undercounter units, ice makers and wine cabinets. No ranges, no dishwashers, no split attention.

  • We will say do not

    A sealed-system repair runs $1,480–$3,420. On some cabinets that is money well spent and on some it is not, and you get told which before anything is opened up.

  • Reachable hours

    Technicians are out 8:00 am – 8:00 pm, seven days. Someone picks up at any hour, so a failure overnight does not have to wait for an office to open before it is on the list.