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The inside rear wall of an empty wine cooler with the racks pulled out, a small temperature probe clipped to the wall and its thin lead running into a grommet.

U-Line Amb Thrm Open: the room temperature sensor is not reading

U-Line 3000 Series units also measure the air in the room with an ambient thermistor.

(844) 709-0727

Mon–Sat, 8am–8pm

  • Temperature sensors
  • Wine cooler thermostat and sensor repair
  • Source: U-Line

Book a visit

Three short steps, about a minute.

or call (844) 709-0727

What Amb Thrm Open
actually means.

U-Line 3000 Series units also measure the air in the room with an ambient thermistor. Amb Thrm Open and Amb Thrm Short mean that circuit has failed. The wine zones can keep cooling, but the control loses the room reading it uses to adjust its behavior.

U-Line wine cooler display · also shown as Amb Thrm Short

What to do when Amb Thrm Open shows on the wine cooler

Kind of codeTemperature sensors

The control has lost a believable reading from one of its thermistors: the probe in a zone, the one on the cold plate or coil, or on some models the one watching the room. With no trustworthy number, the cabinet either chills the bottles far below cellar temperature or lets a zone drift warm. A sensor sitting in frost, pinched behind a rack or unplugged during a move is ruled out before a new one is ordered.

Usually leads toWine cooler thermostat and sensor repair

Testing and replacing the thermostat or the temperature sensors that tell a wine cooler when to cool, when the cabinet runs too cold, too warm or back and forth.

Shows up asWine Cooler Error Code

A wine cooler error code appears as letters and digits on the display, a flashing temperature, dashes where a number should be or a blinking symbol, sometimes with an alarm tone and sometimes while the cabinet stays perfectly cool.

MakeU-Line

U-Line wine cooler repair for undercounter cabinets that leak, frost up or stop holding a steady temperature.

SourceU-Line 3036WCWC User Guide & Service Manual (3000 Series)

U-Line 3000 Series with the text display, such as the 3036WCWC 36-inch dual-zone wine unit. On dual-zone models the code is preceded by L or R for the left or right side; single-zone models show it without a letter.

Before you book,
in this order.

Each step comes from U-Line's own guidance for Amb Thrm Open on its wine coolers. Follow it to the end: the last card says whether this is a visit.

01

Check that both zones are still near their settings with a thermometer.

02

Note whether the display says Open or Short.

03

Book a visit; U-Line gives no owner fix beyond contacting service.

Still there?

It usually turns into wine cooler thermostat and sensor repair. Book with the code and the model number.

What not to do

Amb Thrm is not a zone sensor, so it does not by itself mean the wine is warm or cold. Zone sensors report as Zone T Open or Zone T Short.

What you may
notice with it.

The wine cooler problems Amb Thrm Open tends to arrive with. Answer these at the wine cooler before anyone is booked.

All problems

Before you call

Wine Cooler Error Code

All 7 causes, cheapest first

It also comes with

The control panel of a built-in wine column in a kitchen, its small display glowing with abstract amber segments beside the top of the glass door, unlabeled bottles lying on wooden racks behind the glass below. Problem

Wine Cooler Error Code

7 causes, cheapest first

Where Amb Thrm Open usually leads

Wine cooler thermostat and sensor repair.

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

U-Line
wine coolers.

U-Line wine cooler repair for undercounter cabinets that leak, frost up or stop holding a steady temperature.

U-Line wine cooler repair

More U-Line codes

drDoor Open 5MTemp Hi 6H+Temp Hi 12H+Temp Lo 6H+Zone T OpenZone T ShortNo CommShowroom mode

Temperature sensors on other makes

ASKO H1Fisher & Paykel F3Marvel EuPerlick P1FSub-Zero EC05Vinotemp E1
All 19 codes of this kind
A stainless undercounter wine cooler with a tinted glass door built into white shaker cabinetry beneath a marble counter in a US home kitchen, rows of dark wine bottles lying on beech wood racks inside, softly lit. U-Line builds this

Undercounter wine cooler

A wine cooler about the height of a base cabinet, built in under the counter of a kitchen, a bar or a butler's pantry, with a glass door, sliding racks and a vented toe grille at the floor.

 A black freestanding wine cooler with a tinted glass door stands against a painted wall in a US home dining room, dark wine bottles lying on wooden shelves inside, a soft interior light. U-Line builds this

Freestanding wine cooler

A wine cooler that stands on its own in a dining room, a den or a basement, cooled either by a compressor or by a thermoelectric module, and vented at the back or the sides.

 A stainless dual-zone wine cooler with a glass door in a US home bar, a slim divider shelf separating an upper compartment of dark red wine bottles and a lower compartment of pale green bottles, all, lying on oak racks under two soft lights. U-Line builds this

Dual-zone wine cooler

A wine cooler with two separately set compartments, upper and lower or side by side, so reds and whites or a storage zone and a serving zone each keep their own temperature.

In U-Line's own words

Ambient thermistor circuit open.
U-Line 3036WCWC User Guide & Service Manual (3000 Series) U-Line 3036WCWC User Guide & Service Manual (3000 Series) U-Line 3036WCWC User Guide & Service Manual (3000 Series)

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. U-Line 3000 Series with the text display, such as the 3036WCWC 36-inch dual-zone wine unit. On dual-zone models the code is preceded by L or R for the left or right side; single-zone models show it without a letter.

U-Line Amb Thrm Open wine cooler 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 couple choosing a bottle together from an undercounter wine cooler in a warm kitchen at dusk
For the heart of your home.

Questions
about Amb Thrm Open.

Can I clear Amb Thrm Open myself?
Check that both zones are still near their settings with a thermometer. If it comes back, it needs a visit.
What does the ambient sensor do on a U-Line wine unit?
It measures the room so the control knows what the unit is working against. It does not control a wine zone directly.
Is it safe to keep using the unit with Amb Thrm Open?
Generally yes, as long as the zones stay at temperature. Keep an eye on them until the sensor is replaced.
Why would the room sensor fail?
Most often a loose or damaged connection, and sometimes the probe itself. U-Line’s service steps check both.

Back to your everyday

Still showing Amb Thrm Open?

When you book, copy the code or the blink pattern as the display shows it, add the whole model number, and say whether the bottles still feel cool — a code gives the technician a head start.

Schedule a repair Call (844) 709-0727
(844) 709-0727 Schedule a repair