Breezaire OH: the unit shut itself off because the cellar overheated
OH is the Sentry III's overheat protection.
Mon–Sat, 8am–8pm
- Temperature and alarms
- Cellar cooling load and room check
- Source: Breezaire
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Three short steps, about a minute.
or call (844) 398-5977
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What OH
actually means.
OH is the Sentry III's overheat protection. When the storage temperature goes above 75°F after the first cooling cycle, the controller stops the unit, flashes OH in turn with the temperature and holds it off for at least 30 minutes. Breezaire ties it to blocked airflow at the warm side, which can make a unit heat the cellar instead of cooling it.
Breezaire wine cellar cooling unit display
What to do when OH shows on the wine cellar cooling unitKind of codeTemperature and alarms
The controller saw the cellar go past a high or low limit and raised an alarm, sometimes holding the worst reading it logged while the house was empty. The reason can be as small as the cellar door left ajar after a tasting or a long outage, a room gaining heat from new lights or a sunny glass wall, or as serious as cooling that has stopped. Keep the door shut and read a thermometer on a middle rack before touching anything; the alarm is a warning about the collection, not yet a diagnosis.
Usually leads toCellar cooling load and room check
Measuring the cellar as the cooling unit sees it: insulation, vapor barrier, door, glass and the heat load, to show whether the unit can ever keep up.
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 OH on its wine cellar cooling units. Follow it to the end: the last card says whether this is a visit.
Keep the cellar door shut, and move the most valuable bottles if the room is above about 70°F.
With the unit unplugged, clear anything within 3 feet of the exhaust grille and vacuum the condenser coil with a brush attachment.
After the 30-minute hold, restart with a manual reset by holding WARMER for at least 5 seconds; it only restarts below 75°F.
If OH returns, book a visit, since Breezaire's own advice for a repeat shutdown is to get help.
Still there?
It usually turns into cellar cooling load and room check. Book with the code and the model number.
What not to do
OH is not a sensor problem; the sensor is reading a cellar that really is hot. A broken sensor shows Er, and a reading beyond what the sensor can measure shows HI.
What you may
notice with it.
The wine cellar cooling unit problems OH tends to arrive with. Answer these at the wine cellar cooling unit before anyone is booked.
All problems
Where OH usually leads
Cellar cooling load and room check.
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 repairMore Breezaire codes
Temperature and alarms on other makes
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.
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
the unit will automatically shut off after 20 minutes, and the display will alternately flash “OH” and the temperature.
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 OH 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 areasTampa BayFL · 31 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
Questions
about OH.
Can I clear OH myself?
What usually sets off OH on a Breezaire?
How long before a Breezaire restarts after OH?
Why did my Breezaire show OH during a heat wave?
Back to your everyday
Still showing OH?
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.