What this usually is
When a Café refrigerator runs continuously and still reads warm, the fault is normally on the heat-rejection side or the air path, not inside the sealed system. That puts a temperature sensor reading wrong at the top of the list here and a defrost cycle that has stopped clearing the evaporator at the bottom.
How this presents
- Frost or a solid sheet of ice on the back wall — Light dusting is normal; a sheet that hides the vents means air has stopped moving through the evaporator.
- Cold at the bottom, warm at the top — or the reverse — A temperature split inside one compartment is an air-distribution symptom rather than a refrigeration one.
- NEAR MISS — the unit is completely silent and nothing is cold — That is a power or a start-component fault and it belongs on the no-power page, not this one.
Likely causes on this kind of machine
- A temperature sensor reading wrong — A sensor that has drifted rather than failed tells the control the cabinet is already cold, so the unit stops cooling while insisting nothing is wrong. Ranked next because the boards act on what the sensors report: a sensor reading wrongly produces behaviour that looks like a failed component somewhere else entirely.
- Blocked return air or a stalled evaporator fan — Cold air has to circulate. Air distribution decides what the owner feels, so a blocked path outranks the components behind it.
- A damper or diffuser stuck shut — The flap that meters cold air into the fresh-food compartment can stick, leaving one side cold and the other warm with nothing else wrong. It sits at this point because an air-path fault mimics a refrigeration fault exactly, and it is visible without tools.
- A defrost cycle that has stopped clearing the evaporator — Ice builds on the coil, air can no longer pass through it and the cabinet warms while the compressor runs harder than ever.
Check in this order, and why
- Listen for the internal fan with the door open and the switch held in — A running evaporator fan separates an air-path fault from a refrigeration one in seconds and costs nothing.
- Look at the freezer rear panel for frost — Frost hiding the vents confirms the air path is blocked and tells you the defrost side is where to look.
- Close the door on a strip of paper and pull it out — If it slides out without drag the gasket is not sealing at that point, and you have found a cause before opening anything.
What to try yourself
- Clear the condenser and the air path around the unit — Vacuum the coil and the grille, then restore the clearance the unit needs on its sides and back.
Tools: vacuum, soft brush
- Empty the cabinet of anything blocking a vent — Leave a clear path in front of every opening on the rear and side walls.
- STOP at the point where a panel or a meter is needed — Testing a fan motor, a defrost heater or a sensor means live terminals behind a panel.
Before you open anything
Safety
Unplug the unit or switch off its breaker before any panel comes off — a capacitor can hold a charge after the power is gone. Nothing on this page needs you to bypass a door switch, and a door switch that is defeated leaves a fan running against your hand.
When to stop and call
Call when the cheap checks are exhausted or when the unit runs without ever cycling off. A compressor that never rests is doing damage to itself, and the repair gets more expensive the longer that continues.
Related pages of the same kind
What this page does not cover
Generalized information: this describes the refrigerator class, not your serial number. Anything tied to a chassis — pinouts, part numbers, diagnostic key sequences — is absent by design. A family- or model-level page, where one exists, is linked below and takes precedence. The brand overview page linked below covers the other problems on this machine.
Links: - [Common Café Refrigerator Problems](/blog/caf-refrigerator-problems) - [Common Café Refrigerator Problems](/blog/caf-refrigerator-problems-2) - [Café Refrigerator: Abnormal Noise or Vibration](/blog/caf-refrigerator-abnormal-noise)
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
