The evaportor fan in Amana TH21TW top-bottom Frig (14 yrs old) does not work.
The defrost thermostat seems fine (0 Ohm when cold, 40 killo Ohm at room temp). When the thermostat is by-passed, the fan still does not run.
The fan receives three wire inputs: blue, white and green (ground). When unplugged from the fan and when the compressor is running, the voltage beween the blue and white wires is 120V AC, and 120V between blue and green as well (0 between white and green). When the wires are plugged onto the fan, the voltage between the blue and whie wires became 0, and between blue (or white) and green became 120V, and the fan does not run.
When removed from the frig, the fan has 40 Ohm resistance between the two connectors for the blue and white wires, and the fan runs fine when these two connectors are supplied with 110 V AC from an electric outlet in the house (using only two wire, without the ground).
The colling and defrost of the coils in the freezer seem fine.
Could you help diagnose the problem? Will appreciate it!
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