The short answer
This page picks up where the first-pass checks end: once the vents are clear, the seal passes a paper test and the condenser is clean, the remaining causes are all inside the cabinet and they separate cleanly by which section is warm and whether the compressor runs. If you have not yet cleared the vents, tested the door seal and cleaned the condenser, start with the general page for this symptom, because everything below assumes those are done.
What you are seeing
- A frost sheet behind the rear panel of the freezer
- Everything in both sections is warm and the compressor runs constantly
- Milk on the top shelf is fine and salad in the drawer is warm
- Items at the back are freezing while the door shelves are warm
- The compressor never starts and the cabinet is completely silent
- A near-miss symptom: water pooling in the bottom of the fridge, which belongs on the leak page
- Body: What is warm, and where, is most of the diagnosis: A frost sheet behind the rear panel of the freezer. Everything in both sections is warm and the compressor runs constantly. Milk on the top shelf is fine and salad in the drawer is warm. Items at the back are freezing while the door shelves are warm. The compressor never starts and the cabinet is completely silent. A near-miss symptom: water pooling in the bottom of the fridge, which belongs on the leak page.
Causes, most likely first
- A frost sheet behind the rear panel of the freezer — Why: the defrost system has fallen behind, and the ice blocks the fan that carries cold air to the fridge section: the freezer stays cold, the fridge does not, and no owner-level correction will change it.
- A failed evaporator fan — Why: the compressor cools the evaporator normally but nothing distributes it, which gives a very cold freezer and a warm fridge with no frost visible at the vents.
- Frost blocking the evaporator — Why: when the defrost system falls behind, the ice sheet behind the rear panel blocks the fan, and the freezer stays cold while the fridge warms.
- A dusty condenser or a blocked ventilation gap — Why: the cabinet has to reject heat somewhere; a felted coil or a cabinet pushed hard against a wall traps it and the compressor runs without effect.
- A temperature setting or a mode left changed — Why: a holiday or eco mode, or a setting nudged while cleaning, changes behaviour in a way that looks exactly like a fault.
- A failed fan, defrost heater or sealed system — Why: genuine and the most expensive, but it ranks last because every cause above mimics it and costs nothing to eliminate first.
- Body: Ranked for a fan-circulated cabinet with the evaporator behind the rear wall: First, A frost sheet behind the rear panel of the freezer: the defrost system has fallen behind, and the ice blocks the fan that carries cold air to the fridge section: the freezer stays cold, the fridge does not, and no owner-level correction will change it. Second, A failed evaporator fan: the compressor cools the evaporator normally but nothing distributes it, which gives a very cold freezer and a warm fridge with no frost visible at the vents. Third, Frost blocking the evaporator: when the defrost system falls behind, the ice sheet behind the rear panel blocks the fan, and the freezer stays cold while the fridge warms. Fourth, A dusty condenser or a blocked ventilation gap: the cabinet has to reject heat somewhere; a felted coil or a cabinet pushed hard against a wall traps it and the compressor runs without effect. Fifth, A temperature setting or a mode left changed: a holiday or eco mode, or a setting nudged while cleaning, changes behaviour in a way that looks exactly like a fault. Sixth, A failed fan, defrost heater or sealed system: genuine and the most expensive, but it ranks last because every cause above mimics it and costs nothing to eliminate first.
What to check, in order
- note whether the compressor is running at all, and whether the freezer is still cold, because those two facts together identify which of the remaining causes you have.
- test the door seal with a paper strip at several points, since air ingress defeats every other correction.
- read the control panel for a mode or a setting that has been changed.
- pull the cabinet out, vacuum the condenser and confirm the ventilation gap, then listen for the compressor and the internal fan.
- Body: Work from the free checks to the expensive ones: First, note whether the compressor is running at all, and whether the freezer is still cold, because those two facts together identify which of the remaining causes you have. Second, test the door seal with a paper strip at several points, since air ingress defeats every other correction. Third, read the control panel for a mode or a setting that has been changed. Fourth, pull the cabinet out, vacuum the condenser and confirm the ventilation gap, then listen for the compressor and the internal fan.
Checks you can do yourself
- Record for the technician: which section is warm, whether the compressor runs, and whether the fan is audible with the door switch held in — Tools: a torch and a pencil — Time estimate: a few minutes
- Close the door on a paper strip at the top, both sides and the bottom and note where it pulls out freely — Tools: paper strip — Time estimate: a few minutes
- Check the control panel for holiday, eco or fast-cool modes and return the setting to normal — Tools: the model manual — Time estimate: a few minutes
- Unplug the cabinet, pull it forward and vacuum the condenser coil and the ventilation gap — Tools: vacuum, soft brush — Time estimate: half an hour or so
- Restore power, put a thermometer on the middle shelf and read it after a full day — Tools: a fridge thermometer — Time estimate: overnight
- Body: None of this requires the cabinet to be emptied: Record for the technician: which section is warm, whether the compressor runs, and whether the fan is audible with the door switch held in (a torch and a pencil; a few minutes). Close the door on a paper strip at the top, both sides and the bottom and note where it pulls out freely (paper strip; a few minutes). Check the control panel for holiday, eco or fast-cool modes and return the setting to normal (the model manual; a few minutes). Unplug the cabinet, pull it forward and vacuum the condenser coil and the ventilation gap (vacuum, soft brush; half an hour or so). Restore power, put a thermometer on the middle shelf and read it after a full day (a fridge thermometer; overnight).
Safety first
Safety
A refrigerator holds food safely at 40 °F (4 °C) or below. Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Compact refrigeration uses a flammable hydrocarbon refrigerant: never puncture the evaporator, never chip ice with a tool, and never use a heat gun or an open flame to clear frost. unplug-before-service fridge-40f
When to stop and call a technician
These are past the owner line: The freezer is cold and the fridge is warm with clear vents, which is airflow inside the cabinet. The freezer is cold and the fridge is warm after the vents and the seal have been cleared. The compressor never starts with power confirmed at the outlet. Frost keeps returning behind the rear panel after a full manual defrost. The freezer is cold and the fridge is warm with clear vents, which is airflow inside the cabinet The freezer is cold and the fridge is warm after the vents and the seal have been cleared The compressor never starts with power confirmed at the outlet Frost keeps returning behind the rear panel after a full manual defrost
Nearest pages of the same kind
What this page does not cover
This page is generalized across every refrigerator sold under the Blomberg name: it separates neither the counter-depth cabinets from the deeper ones and the freestanding models from the integrated ones, and it names no individual model. Where a family- or model-specific page exists it is linked here and it outranks this one for that machine; at present no page beneath this one narrows to a single family, so treat the ranking above as the brand-level pattern rather than a reading of your serial plate. This page assumes the first-pass checks are already done; the general page for this symptom covers those, and the Bloomberg spelling covers the same cabinets in an integrated installation. For the other faults that turn up on this machine, start from Common Blomberg Refrigerator Problems.
Links down: - [Blomberg refrigerator problems — the first-pass checks](/blog/blomberg-refrigerator-problems)
Related pages
- Common Blomberg Refrigerator Problems
- Blomberg Refrigerator: Abnormal Noise or Vibration
- Blomberg Refrigerator: Controls, Display or Error Code
- Blomberg Refrigerator: Door, Latch or Seal Fault
- Blomberg Refrigerator: Ice Maker Fault
- Blomberg Refrigerator: Water Leak
- Blomberg Refrigerator: Will Not Start or No Power
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
