Exploded parts diagram for your fridge:
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5167592
I understand your frustration. Below are some diagrams and troublshooting aids. If you look at the exploded parts diagram link and select the Wiring Information page, you'll see the defrost timer is on the FF harness, which is the "Fresh Food" compartment.
Next, click in the "Controls" page. Item #12 is the defrost timer. It looks like it is in light assembly / cover in the fresh food compartment as it has 2 light bulbs shown - and the freezer has only 1.
Generic service manual for Amana bottom mount freezer / fridges:
http://www.servicematters.com/maytag_library/docs/S120_0R0.pdf
http://www.servicematters.com/maytag_library/docs/T120_0R0.pdf
I hope this helps!
If there is no cooling
at all on the fridge section but the freezer works then it is confirmed that
the compressor and gas pressure is OK. Now shut off the fridge and leave it
powered off while you clean and check the evaporator for frost. If frost is
seen it is a good indication as the compressor is working with sufficient gas
within.
Now after about 6 hours plug in the fridge to start. Observe cooling to happen
in about one hour and ice to from under three hours.
Earlier make sure that the thermostat was set to normal mode for freezer and
fridge.
However if ice forms in the freezer then observe the fridge for about 24 hours
for cooling to continue and the fridge to cut off . If not the auto defrost
timer, or the thermostat must be checked. Frost formation without defrosting
could block the air flow and so shut the air passage to the fridge. Also the
blower fan must work and if this is not working then the fan can be faulty.
Also a fault on the control unit is a suspect to non functioning of any one of
these components.
If defrost timer works but frost keeps forming check while the compressor shuts
if the heaters are working, check continuity of the heaters.
So try this test using a multi-meter on the defrost timer and the thermostat and
make your observations so that we come to the solution.
Please check the link below for tips to remove the panels/parts: http://www.espares.co.uk/advice/fridges-and-freezers/a/2
If there is no cooling at all on the fridge section but the freezer works then it is confirmed that the compressor and gas pressure is OK. But if the freezer also gets warmer it can be failure of the auto defrost making the vents choked. Now shut off the fridge and leave it powered off while you clean and check the evaporator for frost. If frost is seen it is a good indication as the compressor is working with sufficient gas within.
Now after about 6 hours plug in the fridge to start. Observe cooling to happen in about one hour and ice to from under three hours.
Earlier make sure that the thermostat was set to normal mode for freezer and fridge.
However if ice forms in the freezer then observe the fridge for about 24 hours for cooling to continue and the fridge to cut off . If not the auto defrost timer, or the thermostat must be checked. Frost formation without defrosting could block the air flow and so shut the air passage to the fridge. Also the blower fan must work and if this is not working then the fan can be faulty. Also a fault on the control unit is a suspect to non functioning of any one of these components.
If defrost timer works but frost keeps forming check while the compressor shuts if the heaters are working, check continuity of the heaters.
So try this test using a multi-meter on the defrost timer and the thermostat and make your observations so that we come to the solution.
Please check the link below for tips to remove the panels/parts:
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