That burning smell coming from your ice maker could be along the lines of what's described above by Scott D, but it could be more serious. My 1 year old Whirlpool had a catastrophic meltdown of the ice maker, which caused it to actually catch fire briefly. Most of the ice maker modules in typical refrigerators have similar construction. On mine, the high-current contacts from the heating coil had a poorly designed set of mating contacts on the control module. There isn't enough mating surface contact between the two for that kind of current. This eventually caused a thermal/currrent runaway situation that caused the failure. There is an overload protection device of some kind in line with the power to the ice maker (no markings on it), but it doesn't have the proper rating to do its job because it allowed combustion before it opened. Luckily my wife was home at the time and was able to unplug the fridge before our house burned down. I have a complete set of detailed photos I took when I disassembled the unit to investigate the cause. I will share them with anyone who is interested. The fridge was under warranty, so I'm getting a new one. I will be doing a safety inspection on the ice maker module every 6 months or so, because the design on these things is deeply flawed.