20 Most Recent Maytag 15 cu. ft. / 425 liter Upright Freezer MQU1556A - Page 2 Questions & Answers

the draining pipe is block with something, you can melt the ice with a hear drier or hot water, then put a wire true the pipe and after that, test the pipe again.

feel the sides or the coils on back if it has any see if they are hot or cold

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its the fan

thermostats are usually a "on/off" switch just as a simple light switch. Ohms on a defrost timer is not very specific. It is basically a switch that turns heaters on and off while keeping the compressor off during the defrost cycle. Your thermostat may be sticking/hanging up.

I have had a few of these, and others of the same ilk. Your problem should be air leakage into the machine. Take a thicker piece of paper, not cardboard, and try to slide it around the gasket where the door gasket contacts the front of the freezer. The gasket should be firm enough to prevent the paper from sliding. Wherever you can move the paper, you could have a air leak. Most of these have no adjustment in the latch to tighten the door. Sometimes a new gasket will solve the problem, sometime a new door will. P.S. Twice I have tied a new freezer to a refrigerator dolly to move it and have accidentally warped the door, and they cannot be straightened. :-( God bless your efforts.

Here are some short videos on how to fix your problem... Frigidaire Upright Freezer Not Freezing Repair Help 297250000 Fix freezer not freezing but still cold

repairs should be performed by a qualified technician. if there isn't ice in the ice bucket located in the freezer you have a water flow problem. if there is water going to the filter and nothing out of the freezer then you have a clogged freezer replace it. if these things are ok then yes it could be the electronic control. filter failure is a common problem.

thermostat

if you are talking about the bucket the cubes go into, most likely you do not use a lot of ice. the ice isn't melting, it's evaporating. usually winds up in a big clump at the bottom.