WhisperKOOL E3: the condenser probe is disconnected or defective
E3 appears on SC PRO and Slimline LS through-wall units, whose controller also measures the condenser coil.
Mon–Sat, 8am–8pm
- Sensors and probes
- Cellar controller and sensor repair
- Source: WhisperKOOL
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What E3
actually means.
E3 appears on SC PRO and Slimline LS through-wall units, whose controller also measures the condenser coil. That reading drives the COH protection that stops the compressor when the coil runs hot. With E3 showing, the controller can no longer see the condenser temperature, so that protection is blind.
WhisperKOOL wine cellar cooling unit display · also shown as “E3”
What to do when E3 shows on the wine cellar cooling unitKind 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 Exhaust Overheating
A cellar cooling unit exhaust overheating makes the room on the other side of the wall uncomfortably warm, blows hot air hard enough to feel from across the room, and often makes the unit stop and restart in the afternoon.
MakeWhisperKOOL
WhisperKOOL systems serviced where they are installed, whether the cellar is warming, the coil is frosting or the unit never rests.
SourceWhisperKOOL SC PRO Series owner's manual (12/2022)
SC PRO and Slimline LS through-the-wall controllers.
Before you book,
in this order.
Each step comes from WhisperKOOL's own guidance for E3 on its wine cellar cooling units. Follow it to the end: the last card says whether this is a visit.
Make sure the exhaust side of the unit is clear and the room behind it is not hot, since the unit cannot warn you about it now.
Check that the unit is still cooling the cellar.
Book a visit to check the condenser probe connection at the back of the controller and replace the probe if it has failed.
Still there?
It usually turns into cellar controller and sensor repair. Book with the code and the model number.
What not to do
E3 is not a sign that the condenser is overheating; that is COH. On WhisperKOOL split and ducted models the digital controller does not use E3 at all.
What you may
notice with it.
The wine cellar cooling unit problems E3 tends to arrive with. Answer these at the wine cellar cooling unit before anyone is booked.
All problems
Where E3 usually leads
Cellar controller and sensor repair.
WhisperKOOL
wine cellar cooling units.
WhisperKOOL systems serviced where they are installed, whether the cellar is warming, the coil is frosting or the unit never rests.
WhisperKOOL wine cellar cooling unit repair
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.
Ducted cellar cooling unit
A self-contained cooling unit placed outside the cellar, in a mechanical room, attic or basement, that sends chilled air in and takes return air back through insulated ducts.
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 WhisperKOOL's own words
Faulty condenser probe connection
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. SC PRO and Slimline LS through-the-wall controllers.
WhisperKOOL E3 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 E3.
Can I clear E3 myself?
Which WhisperKOOL models show E3?
Is E3 on a WhisperKOOL urgent?
Can I see the WhisperKOOL condenser temperature myself?
Back to your everyday
Still showing E3?
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.