CellarPro P3: the condenser probe has failed
P3 is CellarPro's condenser probe, the sensor behind the HA2 and LA2 alarms and behind the shutdown that stops the compressor when the condenser runs over 140°F (standard on VS units, optional on the 1800).
Mon–Sat, 8am–8pm
- Sensors and probes
- Cellar controller and sensor repair
- Source: CellarPro
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What P3
actually means.
P3 is CellarPro's condenser probe, the sensor behind the HA2 and LA2 alarms and behind the shutdown that stops the compressor when the condenser runs over 140°F (standard on VS units, optional on the 1800). When the probe fails, the panel flashes P3 and the unit loses those protections, though it keeps cooling the cellar on probe 1.
CellarPro wine cellar cooling unit display
What to do when P3 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.
MakeCellarPro
CellarPro cooling units looked at in place, from a controller that has gone quiet to water where it should not be.
SourceCellarPro 1800 Series owner's manual
CellarPro self-contained 1800 and VS units list it by name; the split and air-handler manuals name only P1.
Before you book,
in this order.
Each step comes from CellarPro's own guidance for P3 on its wine cellar cooling units. Follow it to the end: the last card says whether this is a visit.
Confirm the cellar is holding its setpoint.
Keep the exhaust side clear and the room behind the unit as cool as you can, since the unit can no longer warn you about a hot condenser.
Book a visit to replace the condenser probe.
Still there?
It usually turns into cellar controller and sensor repair. Book with the code and the model number.
What not to do
P3 does not mean the condenser is overheating; that would be HA2. It means the reading itself is missing.
What you may
notice with it.
The wine cellar cooling unit problems P3 tends to arrive with. Answer these at the wine cellar cooling unit before anyone is booked.
All problems
Where P3 usually leads
Cellar controller and sensor repair.
CellarPro
wine cellar cooling units.
CellarPro cooling units looked at in place, from a controller that has gone quiet to water where it should not be.
CellarPro 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 CellarPro's own words
P1, P3 Probe Failure
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. CellarPro self-contained 1800 and VS units list it by name; the split and air-handler manuals name only P1.
CellarPro P3 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 P3.
Can I clear P3 myself?
Is P3 on a CellarPro urgent?
Where is the P3 probe on a CellarPro?
Can P3 cause HA2 on a CellarPro?
Back to your everyday
Still showing P3?
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.