Refrigerated cabinet temperature, leaking water and freezing up issues !
A refrigerated cabinet is a general term used for either a fridge, fridge-freezer or freezer. The most common faults are, fluctuating temperature, icing up and producing puddles. The door seal on a refrigerated cabinet is very important and is usually the cause of such problems.
As seals age they become less supple and their magnetic grip weakens. This allows warm, humid air to pass into the cabinet, which in turn condenses and turns into water or ice. Air can also pass into a refrigerated cabinet on a new appliance, when the door hinging is altered. This happens because, when the cabinet leaves the factory, the hinged side of the door is always pulled more firmly against the cabinet body, leaving it in a crushed state. When the hinging is swapped, the crushed seal section often fails to make proper contact with the cabinet body. This can usually be resolved by using a hair-dryer on the crushed seal and weakening it, until it's supple again. Always make certain your cabinet seal is making good contact all the way round, especially along the bottom where it is difficult to view. The older your cabinet, the more likely you are to have a seal related fault.
Cabinet temperature fluctuation and icing up can also be caused by doors being left accidentally ajar or open for prolonged periods of time during loading & unloading. A frost free freezer cabinet is particularly susceptible to failure when its door is left open. Huge quantities of ambient temperature air can be sucked in. The extraction fan can only cope with a limited amount of ambient air before it condenses and freezes. The ventilation ducts within the frost free system can actually accumulate condensed water and freeze up before the fan has time to extract. This can result in unstable cabinet temperatures and in the worst case a cabinet can actually revert to room temperature. The very inconvenient solution to this, is to empty the cabinet or cabinets and switch the appliance off for 48 hours which facilitates a full defrost of the inaccessible ventilations ducts. This works is many cases, but not all.