WineCellarRepair.center (844) 398-5977Mon–Sat, 8am–8pm Book a visit
A thin temperature probe lead taped along the side of a wooden wine rack in a cellar, its small metal tip hanging among unlabeled bottles, the wire running up toward the cooling unit's grille.

Breezaire Er: the Sentry III has lost its temperature sensor

Er means the Sentry III can no longer trust the sensor it regulates from, the intake air sensor or a bottle probe if one is plugged in, so it stops cooling.

(844) 398-5977

Mon–Sat, 8am–8pm

  • Sensors and probes
  • Cellar controller and sensor repair
  • Source: Breezaire

Book a visit

Three short steps, about a minute.

or call (844) 398-5977

What Er
actually means.

Er means the Sentry III can no longer trust the sensor it regulates from, the intake air sensor or a bottle probe if one is plugged in, so it stops cooling. Breezaire lets the owner run the unit by hand in the meantime: COOLER turns it on and WARMER turns it off, each with the 5-minute compressor delay.

Breezaire wine cellar cooling unit display · also shown as ER

What to do when Er shows on the wine cellar cooling unit

Kind of codeSensors and probes

The controller has lost a sensible reading from one of its probes: the one sampling the cellar air, the one on the evaporator coil, or on a remote probe the lead that runs out to a rack. With no number it can trust, the unit may chill the room well below 55°F, stop and start every few minutes, or run on without end. A probe unplugged during a rack install, pinched behind a board or sitting in a draft from the door is ruled out before a new one is ordered.

Usually leads toCellar controller and sensor repair

Getting the controller, its display and its probes to read the cellar truthfully and call for cooling at the right time.

Shows up asCellar Cooling Unit Error Code

A cellar cooling unit error code appears as letters or digits on the controller, a flashing reading, a blinking light on the unit, or an alarm tone, sometimes while the cellar still holds its temperature.

MakeBreezaire

Visits to cellars cooled by a Breezaire unit, starting with a thermometer among the racks and a hand at the exhaust grille.

SourceBreezaire Sentry III Plus Controller owner's manual

Sentry III and Sentry III Plus controllers on WKL through-the-wall units and WKSL split systems. Older WKS splits built before mid-2010 used a manual thermostat and show none of these codes.

Before you book,
in this order.

Each step comes from Breezaire's own guidance for Er on its wine cellar cooling units. Follow it to the end: the last card says whether this is a visit.

01

If a bottle probe is fitted, check that its plug is fully seated, because the controller reads the probe in place of the air sensor.

02

To keep the cellar cool until the repair, press COOLER to start the unit by hand and WARMER to stop it, allowing for the 5-minute delay each time.

03

Watch the room on a separate thermometer while running by hand, since nothing is regulating the temperature.

04

Book a visit to test the sensor and its wiring.

Still there?

It usually turns into cellar controller and sensor repair. Book with the code and the model number.

What not to do

Er does not say the cellar is warm or cold; it says the controller cannot tell. LO and HI appear when the sensor still answers but reads below 32°F or above 99°F.

What you may
notice with it.

The wine cellar cooling unit problems Er tends to arrive with. Answer these at the wine cellar cooling unit before anyone is booked.

All problems

Before you call

Cellar Cooling Unit Error Code

All 8 causes, cheapest first

It also comes with

The small controller panel on the cellar side of a through-the-wall cooling unit, its display glowing with abstract amber segments beside the slotted supply grille, the top row of a wooden wine rack with unlabeled bottles just below. Problem

Cellar Cooling Unit Error Code

8 causes, cheapest first

Where Er usually leads

Cellar controller and sensor repair.

Air or coil probe, display, transformer or control board · moderate.
Book a visit What the job involves

Breezaire
wine cellar cooling units.

Visits to cellars cooled by a Breezaire unit, starting with a thermometer among the racks and a hand at the exhaust grille.

Breezaire wine cellar cooling unit repair

More Breezaire codes

E1ALOHLOHI

Sensors and probes on other makes

CellarCool E1CellarPro P1WhisperKOOL E1Wine Guardian !3Wine-Mate P1
All 10 codes of this kind
A wine cellar cooling unit set into the upper part of a stone wall in a US home wine cellar, its cellar-side grille flush with the wall above dark wood racks full of wine bottles, cool soft lighting. Breezaire builds this

Through-the-wall cellar cooling unit

A self-contained box set into an opening in the cellar wall: its cold face blows into the wine room, and its warm face breathes out into the room next door.

 A slim white split-system wine cellar evaporator unit mounted high on a plastered wall of a US home wine cellar above curved wooden racks of wine bottles without labels, insulated copper lines entering the wall beside it, warm low lighting. Breezaire builds this

Split-system cellar cooling

An evaporator inside or beside the cellar and a condensing unit outside or in another room, joined by an insulated copper line set and charged on site.

In Breezaire's own words

A faulty sensor will be indicated by a display of “Er”.
Breezaire Sentry III Plus Controller owner's manual Breezaire Sentry III Plus Controller owner's manual Breezaire WKL Series installation instructions

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Sentry III and Sentry III Plus controllers on WKL through-the-wall units and WKSL split systems. Older WKS splits built before mid-2010 used a manual thermostat and show none of these codes.

Breezaire Er wine cellar cooling unit 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 lifting a bottle from a lit stone-walled wine cellar, the cooling unit's grille high on the far wall
For the heart of your home.

Questions
about Er.

Can I clear Er myself?
If a bottle probe is fitted, check that its plug is fully seated, because the controller reads the probe in place of the air sensor. If it comes back, it needs a visit.
Can I leave a Breezaire running by hand after Er?
Only as a stopgap. In manual operation the controller is not switching the unit off at your setpoint, so check the temperature often and stop the unit with WARMER if the room gets too cold.
Could a bottle probe be behind Er on my Breezaire?
It is worth checking. Once a probe is plugged in, the Sentry III reads it instead of the intake air sensor, so the probe and its plug become the first suspects.
Will a reset clear Er on a Breezaire?
A manual reset, holding WARMER for at least 5 seconds, restarts the controller and keeps your settings. If the sensor itself has failed, Er comes straight back and the sensor or its connection has to be replaced.

Back to your everyday

Still showing Er?

When you book, type the code or the blink count as the controller shows it, add the full model number, and say what the thermometer in the cellar reads now — that gives the technician a head start.

Schedule a repair Call (844) 398-5977
(844) 398-5977 Schedule a repair