Thank you for getting that...If you remove the drawers from the freezer and look at the interion back panel, you should see that is has screws and clips and comes apart as in the image below:You need to remove this panelling to gain access to the evaporator area...The evaporator has a tray below it as you can see in the image belowIn the center of that tray is a hole... That hole will be blocked with either ice, or with debris.. Clear the hole and re-assemble.
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Please be careful when removing the panels as ice behind them may cause them to break if forced..Use a hair dryer to warm the area from about 12" away if necessary.Please rate the assistance given by me so far & feel free to ask for further advice on your problem and I'll help if I can.
The ice was blocking it...Use the heater, or some hot water from the kettle... just a little, on the hole to ensure there is no more ice in there...Make sure that there is no ice left on the evaporator... Then put the appliance back together.The appliance should now work.. Remove the ice from under the food drawersExplanation: When the appliance goes into a defrost cycle, if the defrost causes a lot of water; when the defrost cycle switches off, freezer starts to work again. If there is still ice melting from the evaporator, dripping into the water collector/drain when the freezer starts to work again, it causes those drips that have collected in the water collector and the drain to freeze, blocking the way out for the water. The next time you have a defrost, the water can not escape as the channel is frozen-up.. so it flows over the edge and collects under the bottom drawer of the freezer.I'm glad you managed to get it done.. Have a look at the clips on that pane to see how they attach to the air channel before you put it back together