Dacor Wine Cooler Error Codes: TEMP-HI, FAN-FAIL, COMP-ERR and PF

A wine cabinet fails quietly. There is no warm milk to warn you and no puddle on the floor — just a few degrees of drift that a collection will tolerate for a week and resent for a year. That is why the Dacor wine cooler error codes matter more than the equivalent codes on a refrigerator: they are often the only notice you get. The five below apply to HWC242 and the Heritage and Modernist wine cabinets.

Code	What the cabinet is reporting	What it means for the bottles
TEMP-HI	Cabinet is warmer than its setpoint	Act now — sustained warmth is what ages wine badly
TEMP-LO	Cabinet is colder than its setpoint	Risk of chilling past the point corks tolerate
FAN-FAIL	Circulation fan has failed	Zones stratify: top shelf warm, bottom shelf cold
COMP-ERR	Compressor fault	No cooling at all — treat as urgent
PF	Power failure notification	Check how long it was off before judging anything else

TEMP-HI and TEMP-LO Describe the Cabinet, Not the Cause

Both temperature codes report a measured condition rather than a broken part. The cabinet is telling you it has failed to hold the setpoint, and the reason can be anything from a door that did not latch to a compressor that has stopped. That makes them the codes most worth investigating rather than clearing. Start with what you control. A cabinet loaded warm — a case brought in from a hot trunk — will read high for hours and that is normal. A door propped by a bottle that sits slightly proud of the shelf will read high forever. Direct sun on the glass, or a cabinet installed with no breathing room at the plinth, will do the same. TEMP-HI that persists with the door properly shut and the load settled is a genuine fault. TEMP-LO is rarer and usually points at control rather than capacity: a setpoint someone changed, a dual-zone cabinet with its zones confused, or a thermistor reading low. It matters more than owners assume, because wine held too cold dries corks and pushes sediment out of solution.

FAN-FAIL Is Why One Shelf Is Wrong and the Others Are Fine

The circulation fan is what makes a wine cabinet a wine cabinet rather than a small refrigerator. It moves air evenly so that every shelf sits within a degree or two of the same temperature, and in a dual-zone unit it is what keeps the two zones honest. When FAN-FAIL appears, the compressor usually keeps running and the cabinet keeps cooling — it simply stops distributing that cold.

The symptom owners describe is a cabinet that reads correctly on the display while the top shelf feels warm to the hand. Before calling it a motor failure, look for the mundane causes: a bottle or a shelf pushed back against the fan grille, a label that has come loose and lodged in the airway, or dust on the rear grille. Restricted airflow can trip the same code as a failed motor.

COMP-ERR Is the One That Cannot Wait

A compressor fault means no cooling is happening at all. Depending on the ambient temperature of the room, a well-insulated cabinet will hold acceptable temperatures for a matter of hours, not days. If COMP-ERR appears and the interior is climbing, move the bottles you care about into a cool, dark place — a basement or an interior closet beats an improvised ice chest — and deal with the cabinet afterward. Do not run a cabinet in and out of power trying to make the code clear. Short-cycling a compressor that is already struggling is how a repairable fault becomes a sealed-system replacement, which is the point at which the decision stops being about parts. Our guide on whether to repair or replace a wine cabinet walks through that fork honestly.

PF Tells You About an Outage You May Have Slept Through

PF is a notification that power was lost. On a wine cabinet this is more useful than it sounds: a four-hour outage in summer can put a full cabinet well above its setpoint, and the display will show a normal reading again long before the bottles have recovered. Treat PF as a prompt to check how long the interruption lasted, then give the cabinet time to pull back down before judging its performance.

• Clear the code and watch, don't clear the code and forget. Note the temperature when you clear it, and again two hours later.
• Repeated PF without neighborhood outages points at the circuit, not the cabinet — a shared breaker or a loose connection.
• Check the door seal after any long outage. Condensation that formed during the warm spell can leave a seal sitting proud.
• Do not stack the recovery. Adding a warm case while the cabinet is still catching up will produce TEMP-HI on top of it.

The full archive of wine refrigeration codes carries the diagnosis for each one, along with the symptoms that usually arrive before the code does. Owners who log the reading once a week notice a drifting cabinet long before the control decides to say anything about it, and that note is the most useful thing you can hand a technician.

Getting a Wine Cabinet Looked At

Circulation fans, thermistors, and control boards in a built-in wine cabinet sit behind interior panels that have to come out without disturbing the shelving or the glass. Sealed-system work is a different job again. Our wine refrigeration repair service covers both, with a diagnostic from $95 that is credited toward authorized repair work; the final price is confirmed after the on-site diagnosis and a written estimate is provided before anything starts. If the cabinet has stopped cooling outright, protect the collection first and book the visit second.