The cabinet has produced too much ice for the tray to collect and cope with (at the back is a heated tray to evaporate the water when it defrosts 'normally').
In normal operation, the cabinet defrosts itself several times in 24 hours, producing small amounts of water each time. Yours is either not defrosting automatically, or there is a reason why the system is unable to cope.
The most likely cause of the problem, is a failed defrost timer, or a failed evaporator circulating fan, ar a failed defrost heater. These are in order of likelihood.
However, is it possible that the cabinet is producing too much ice for another reason ? It is a domestic fridge, Are you using it commercially? Are you opening the door far more times than might be considered 'normal'? Is it in the same room as, or next to a continuous heat source, Is the door seal effective? Do you have a small child who loves opening the door?
Trevor, June 2007
