The short answer
The noise a Cordova refrigerator makes depends entirely on which type it is. An absorption cabinet has no compressor and should be almost silent apart from a soft gurgle and the fan in the vent; a twelve-volt compressor cabinet cycles like a small household refrigerator. A new noise usually means a fan, a loose mounting or something in the vent cavity.
What you are actually seeing
- A buzzing or whirring from the exterior vent rather than from inside the coach — Means: on-page
- A rattle that appears only when the vehicle is parked on a slope — Means: on-page
- A knocking that starts and stops with a compressor cycle — Means: on-page
- A soft gurgle or trickle from behind the cabinet — Means: on-page
- A rattle that started after a journey — Means: on-page
- A hissing at the vent with a sharp irritating smell — Means: different-fault — Go to: cordova-refrigerator-cooling-failure
- A repeated clicking with no ignition — Means: different-fault — Go to: cordova-refrigerator-wont-start
- Body: Match what you see before you change anything. A buzzing or whirring from the exterior vent rather than from inside the coach. A rattle that appears only when the vehicle is parked on a slope. A knocking that starts and stops with a compressor cycle. A soft gurgle or trickle from behind the cabinet. A rattle that started after a journey. Some near-miss symptoms belong on a different page: A hissing at the vent with a sharp irritating smell points at a possible cooling unit failure that means stop using the cabinet, covered on cordova-refrigerator-cooling-failure; A repeated clicking with no ignition points at an ignition fault rather than a noise fault, covered on cordova-refrigerator-wont-start.
Causes, ranked for this machine
- A vent fan with debris in it, or a fan mounting that has come loose — Why this rank: First because the fan is the only fast-moving part in most of these installations and it lives in a cavity open to the outside world
- Something loose in the vent cavity: a nest, packaging, insulation or a cable — Why this rank: The cavity is open to the outside through louvres, so it collects whatever gets in
- A cabinet mounting or trim screw loosened by travel — Why this rank: Everything on this vehicle is shaken for hours, which no household appliance experiences
- Normal absorption gurgle mistaken for a fault — Why this rank: Worth naming, because a soft trickling from behind the cabinet is the cooling fluid doing its job
- A failing compressor or fan motor on a twelve-volt cabinet — Why this rank: Last because it is the only cause needing a part and it is rarer than the four above
- Body: Ranked for a recreational-vehicle and marine refrigerator, which may be an absorption cabinet running on gas or electricity or a compressor cabinet running on twelve volts, and which is fitted into a vented cavity in a moving vehicle. Most likely: A vent fan with debris in it, or a fan mounting that has come loose. First because the fan is the only fast-moving part in most of these installations and it lives in a cavity open to the outside world. Next most likely: Something loose in the vent cavity: a nest, packaging, insulation or a cable. The cavity is open to the outside through louvres, so it collects whatever gets in. Third: A cabinet mounting or trim screw loosened by travel. Everything on this vehicle is shaken for hours, which no household appliance experiences. Fourth: Normal absorption gurgle mistaken for a fault. Worth naming, because a soft trickling from behind the cabinet is the cooling fluid doing its job. Fifth: A failing compressor or fan motor on a twelve-volt cabinet. Last because it is the only cause needing a part and it is rarer than the four above.
What to check, in order
- Establish whether the noise is coming from inside the coach or from the exterior vent
- Open the vent cover and look for debris, a nest or a loose fan
- Check the cabinet trim and mounting screws for anything that has worked loose
- Note whether the noise tracks a compressor cycle or runs continuously
- Body: Each check rules out the causes above it. First, establish whether the noise is coming from inside the coach or from the exterior vent. Second, open the vent cover and look for debris, a nest or a loose fan. Third, check the cabinet trim and mounting screws for anything that has worked loose. Fourth, note whether the noise tracks a compressor cycle or runs continuously.
Checks you can safely make yourself
- Stand outside at the exterior vent while the cabinet runs and decide whether the noise is louder there than inside the coach — Tools: none — Time estimate: a few minutes
- Isolate the cabinet, remove the exterior vent cover and inspect the cavity for a nest, leaves, packaging or a loose cable — Tools: screwdriver, torch — Time estimate: half an hour
- With the cabinet isolated, check that the vent fan turns freely by hand and that its mounting is tight — Tools: screwdriver — Time estimate: a quarter of an hour
- Check the interior trim, the door frame and the visible mounting screws for anything loosened by travel, and tighten by hand — Tools: screwdriver — Time estimate: a quarter of an hour
- Listen through a full cycle and note whether the noise starts and stops with the cabinet or runs constantly — Tools: notepad — Time estimate: an hour
- Body: Checks an owner can make with the cabinet isolated or simply observed. Step one: Stand outside at the exterior vent while the cabinet runs and decide whether the noise is louder there than inside the coach. Tools: none. Time: a few minutes. Step two: Isolate the cabinet, remove the exterior vent cover and inspect the cavity for a nest, leaves, packaging or a loose cable. Tools: screwdriver, torch. Time: half an hour. Step three: With the cabinet isolated, check that the vent fan turns freely by hand and that its mounting is tight. Tools: screwdriver. Time: a quarter of an hour. Step four: Check the interior trim, the door frame and the visible mounting screws for anything loosened by travel, and tighten by hand. Tools: screwdriver. Time: a quarter of an hour. Step five: Listen through a full cycle and note whether the noise starts and stops with the cabinet or runs constantly. Tools: notepad. Time: an hour.
Safety first
Safety
Isolate the cabinet at its breaker and close the propane supply before removing a vent cover, and be aware that surfaces inside the cavity can be hot. Never run a gas appliance with the vent cover removed. 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. fridge-40f unplug-before-service
Where the owner fix ends
Call a technician for any hissing at the vent accompanied by a sharp irritating smell, which on an absorption cabinet means stop using it immediately. Also call when the cavity is clear, the fan is sound, the mountings are tight and a knocking still tracks the cabinet exactly.
Nearest pages of the same kind
Generalized information
This page is generalized across the Cordova refrigerator line. Absorption cabinets and twelve-volt compressor cabinets share the ranking above but almost none of their parts, and this page does not cover a specific model, a specific cooling unit or a particular coach builder's vent installation. Family- and model-specific pages, where they exist, are linked below.
Links: - [Common Cordova Refrigerator Problems](/blog/cordova-refrigerator-problems) - [Cordova Refrigerator: Controls, Display or Error Code](/blog/cordova-refrigerator-control-fault) - [Cordova Refrigerator: Not Cooling or Not Freezing](/blog/cordova-refrigerator-cooling-failure) - [Cordova Refrigerator: Door, Latch or Seal Fault](/blog/cordova-refrigerator-door-seal)
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
