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REFRIGERATION

Troubleshooting

Door gasket torn or loose

The magnetic gasket around a refrigerator door is a wear part. It flexes thousands of times a week, gets hit by trays, stained by food and cleaned with whatever is to hand. Over time it splits at the corners, hardens, loses its magnetic grip or pulls out of its channel. A damaged gasket lets cold air out and warm, humid air in, causing longer compressor run times, frost, condensation, and warm spots near the door. Replacing a gasket is one of the cheapest maintenance jobs on a commercial refrigerator, and on many models it can be done by the owner without tools.

First, check these

  1. Run your fingers along the whole gasket, especially corners and the hinge side, looking for splits, flattened sections or hard spots.
  2. Do the paper test: close the door on a strip of paper at several points. It should resist when pulled.
  3. Check whether the gasket is fully seated in its channel or pulling out in places.
  4. Check that the gasket is clean and not sticky with grease or food residue.
  5. Check the door hangs straight; a sagging door tears gaskets at the same corner.

Likely causes

  1. 1. Dirty or sticky gasket

    You can check this

    Signs: Grease or food residue, gasket sticks and peels, mould in folds.

    Fix: Clean with warm water and mild detergent, rinse and dry thoroughly. Avoid solvents, strong chemicals and scouring pads that harden or tear the rubber.

  2. 2. Gasket pulled out of its channel

    You can check this

    Signs: Section of gasket hanging loose or rippled, often at corners.

    Fix: Press a push-in gasket firmly back into its channel along its length. Screw-fixed gaskets may need a technician.

  3. 3. Torn or split gasket

    You can check this

    Signs: Visible splits, missing pieces, magnet strip exposed or broken.

    Fix: Replace with the correct gasket for the model. Many are push-in and can be fitted by the owner; warming a new gasket in warm water helps it lose packing creases.

  4. 4. Hardened or flattened gasket

    You can check this

    Signs: Gasket stiff, no longer springs back, light leaks along long stretches.

    Fix: Replace the gasket. Hardened rubber cannot be restored reliably.

  5. 5. Sagging door or worn hinges

    Technician job

    Signs: Repeated tearing at the same corner, door rubs the frame, gap larger at the top or bottom.

    Fix: A technician should adjust or replace hinges before fitting a new gasket, or the new one will tear too.

  6. 6. Frame heater fault freezing the gasket

    Technician job

    Signs: Gasket sticks to an icy frame on freezers and tears when the door is pulled.

    Fix: A technician should test the frame heater.

When to call a technician

Call a technician if the door is sagging, the gasket tears repeatedly at the same spot, the gasket is screw-fixed or you cannot source the right part. Ask your supplier for the correct gasket using the model and serial number from the rating plate; a near-match rarely seals properly. Inspect gaskets as part of your weekly cleaning; catching a small split early stops it spreading along the corner.

Isolate power before working on doors with heater wires or lighting. Get help with heavy doors. Do not drill or cut into door frames; heater wires and refrigerant lines may run nearby, and hydrocarbon (R290 or R600a) systems are for trained technicians only.

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