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The inside back wall of an empty upright freezer with its cover panel removed, a small sensor clipped beside the frosted coil and its thin wire leading to a plug.

Sub-Zero EC08: the sensor on the freezer coil has stopped reporting

EC08 (07’s neighbor, printed as 08 on IC-27 and UC models) refers to the freezer evaporator thermistor, the sensor clipped to the cooling coil that lets the control judge when defrost is complete.

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  • Temperature sensors
  • Freezer thermostat and temperature control repair
  • Source: Sub-Zero

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Three short steps, about a minute.

or call (844) 456-4651

What EC08
actually means.

EC08 (07’s neighbor, printed as 08 on IC-27 and UC models) refers to the freezer evaporator thermistor, the sensor clipped to the cooling coil that lets the control judge when defrost is complete. When it reads open or shorted for 10 seconds or more, or keeps giving erratic values, the control logs this code.

Sub-Zero freezer display · also shown as EC 08, 08

What to do when EC08 shows on the freezer

Kind of codeTemperature sensors

The control lost its reading of how cold the cabinet, the coil or the air around the freezer is, because a thermistor reports nonsense or its wire came loose. Without that number the control either runs the compressor without stopping or lets the cabinet drift warm. A sensor packed in frost and a connector loosened by a move are checked before the sensor itself is replaced.

Usually leads toFreezer thermostat and temperature control repair

Repairing the dial thermostat or the sensor and control that decide when a freezer cools, so it stops running without end or quitting too early.

Shows up asFreezer Error Code

A freezer error code appears on the display: letters and digits, a flashing temperature, or a warning symbol, sometimes with an alarm and sometimes with the freezer still running.

MakeSub-Zero

Sub-Zero freezers repaired in the home, with the food kept shut in while the cause is found.

SourceSub-Zero answer: 600 or 700 Series EC07 or EC08

600 and 700 Series (EC08 or EC 08), IC-27 integrated columns and UC undercounter models (08).

Before you book,
in this order.

Each step comes from Sub-Zero's own guidance for EC08 on its freezers. Follow it to the end: the last card says whether this is a visit.

01

Look through the vents at the back of the freezer for a thick white frost coat, which suggests defrost has stopped ending properly.

02

On IC-27 and UC models, turn the breaker off for 30 seconds and on again, then check whether 08 returns.

03

Book a visit if the code stays, and give the technician the code and the freezer temperature from the display.

Still there?

It usually turns into freezer thermostat and temperature control repair. Book with the code and the model number.

What not to do

EC08 does not mean the cabinet sensor has failed; that is EC07. It also does not by itself mean the defrost heater is broken, which the 20-series codes report.

What you may
notice with it.

The freezer problems EC08 tends to arrive with. Answer these at the freezer before anyone is booked.

All problems

Before you call

Freezer Error Code

All 7 causes, cheapest first

It also comes with

The glowing control panel on the front of a stainless undercounter freezer drawer in a home bar, a blurred, unreadable code beside a flashing warning light, an owner's manual lying open with out-of-focus pages on the counter above. Problem

Freezer Error Code

7 causes, cheapest first

Where EC08 usually leads

Freezer thermostat and temperature control repair.

Thermostat, temperature sensor or garage kit · low to moderate.
Book a visit What the job involves

Sub-Zero
freezers.

Sub-Zero freezers repaired in the home, with the food kept shut in while the cause is found.

Sub-Zero freezer repair

More Sub-Zero codes

EC07EC4021222420 4 5095 1 0035 C 0090 5 80

Temperature sensors on other makes

Fisher & Paykel F3Frigidaire E2Marvel ELPerlick P1FU-Line E1Viking oPn
All 12 codes of this kind
A tall stainless steel built-in freezer column stands flush in white kitchen cabinetry in a US home, its door open on lit glass shelves and pull-out bins of frozen food. Sub-Zero builds this

Freezer column

A built-in, full-height freezer that stands alone in the cabinetry, often beside a matching fresh-food column, with a stainless or panel-ready door and an electronic control.

 Two stainless undercounter freezer drawers built into a US home bar island, the top drawer pulled out to show frost-free bins of ice cream pints and frozen fruit bags. Sub-Zero builds this

Undercounter freezer

A 15- to 24-inch freezer or a pair of freezer drawers built in under a counter, in a kitchen island, a home bar, a basement or a pool house, venting from the front.

In Sub-Zero's own words

Freezer evaporator thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temperatures
Sub-Zero answer: 600 or 700 Series EC07 or EC08 Sub-Zero answer: IC-27 integrated columns error code 08 Sub-Zero answer: Undercounter (UC) error code 08

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. 600 and 700 Series (EC08 or EC 08), IC-27 integrated columns and UC undercounter models (08).

Sub-Zero EC08 freezer repair,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas

Tampa BayFL · 31 areas

OrlandoFL · 30 areas

Miami / South FloridaFL · 47 areas

New York MetroNY · 75 areas

HoustonTX · 36 areas

ChicagoIL · 50 areas

Los AngelesCA · 95 areas

San DiegoCA · 31 areas

San Francisco Bay AreaCA · 74 areas

A parent and a child packing summer berries into bags beside an open upright freezer in a tidy garage
For the heart of your home.

Questions
about EC08.

Can I clear EC08 myself?
Look through the vents at the back of the freezer for a thick white frost coat, which suggests defrost has stopped ending properly. If it comes back, it needs a visit.
Why would a bad coil sensor on a Sub-Zero cause frost?
The evaporator thermistor tells the control when the coil is clear during defrost. Without a sound reading, defrost may not end at the right time, and frost can build on the coil and choke the airflow.
Is it safe to keep food in a Sub-Zero freezer showing EC08?
Usually yes for the short term, since the compressor still runs. Check the food temperature daily until the sensor is replaced, because a coil that frosts over will slowly lose cooling.
What is the difference between EC07 and EC08 on Sub-Zero?
EC07 is the sensor that reads the air in the freezer compartment; EC08 is the one clipped to the freezer evaporator coil. They are different parts in different places.

Back to your everyday

Still showing EC08?

Book with the code or the alarm pattern written exactly as the freezer shows it, the full model number, and whether the food is still frozen hard — when there is a code, that is where the diagnosis starts.

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(844) 456-4651 Schedule a repair