I've a Amana ARB1917 and I want to know where is timer defrost ??

OK, you can open the cover. Here is the part if you need it.
Here is a diagram if you should also need it. It is number 12 on the diagram. Let me know if you need anything further. I forgot what the original question was.

See other post.

If the fans are not coming on that would tell me the defrost timer=> R0131577 Defrost Timer is worn out and or stuck in defrost. Turn that red dial clockwise slowly until you hear compressor and fan restart.. If this solves turning on the refrigerator then you will need to replace the timer with the red dial because the clock inside is stuck and will contine to cause problems until replaced. Let me know if you have questions, Thanks Sea Breeze

R0131577 Defrost Timer

Good Afternoon, My name is Houston and thank you for using FixYa! Your defrost system is made up of three components: defrost heater, defrost thermostat and defrost timer/control board. Since you have the ABB2223DES Amana the defrost timer is incorporated into the electronic control board (P/N: 12868513) which is located behind the control panel in the refregerator section. Unfortunately, it is in the $100 range, so let's hope that it is either the defrost heater (P/N: 67001794) - approximately $30 - and is located on the right side of the evaporator (the coils in your freezer section). If you have access to an ohm meter, you can test it by disconnecting and doing an ohm check - anything but an open or infinity reading usually means it is good. The last item is the defrost thermostat which is located near the evaporator (P/N: 12001937). It can also be checked with an ohm meter and the normal readings are 28-48 ohms.

The way to check that everything is clear pour some water over the evaperator coil in the freezer and see that the water drains very quickly. Also you could use a can of compressed air that you would use to clean the keyboadr and what not on your computer and blow it in drain and clear anything remaining

Gene

Relax, some people exagerate was all I was saying.
Anyhow, go to a good parts store and ask for a Supco EDT (Electronic Defrost Timer) replacement as they are more reliable and not much difference in price.

rotate defrost timer till compressor off
does it defrost if no then
jump out defrost t-stat (round disc)
if starts to defrost Replace defrost t-stat
if yes replace defrost timer if not turning

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!

Below bottom grate is a defrost timer. Turn slowly clockwise until you hear compressor start. If this works, replace defrost timer.
Let me know, Thanks, Sea Breeze

could be thermostat or defrost heater or defrost timer.you can check the heater with meters that check continuity.the thermostatis located on top coil and sometimes they will seperate.so look for those 2 things.most likely it will be one of the 2.the defrost timer is most likely good,if you hear your machine turn off and back on then the timer is good.