Hi and welcome to FixYa. I am Kelly.
You did not mention if the dryer was even warm to the touch during operation.
The generic service manual can be found here:
I would follow the troubleshooting process in step 9 of page 21.
To gain access to the unit you will need to remove the service access panel Pg 28 of manual
Gas burner circuits steps are on page 32
A little about heat control circuits. They are series circuits and any one of the following can prevent the dryer from heating.
1. Motor switch
2. heat control
3. cycle thermostat
4. high limit thermostat
6. heating element
in addition to the above
For gas burners
1. Gas valve
2. Gas safety valve
4. Flame sensor
Most dryers have at least 5 of the 6 components listed in the first set of components above. The high limit thermostat is replaced by the thermistor in newer models. Thermistors are a one time fail item and if it has opened it must be replaced.
The warranty for this dryer is as follows:
1 year full coverage
After one year from the date of original retail purchase, Amana will provide a replacement part, f.o.b. Amana, Iowa, as listed below, for any part that fails due to a defect in materials or workmanship. The owner will be responsible for paying all other costs including labor, mileage, and transportation.
Second through Third Year
Amana will provide any part.
Third through Fifth Year
Amana will provide the drive motor or timer.
Third through Tenth Year
Amana will provide the cabinet assembly should the part rust through.
Amana will provide the Stainless Steel inner drum if so equipped.
Thanks for using FixYa.