How an Amana dryer reports a fault
An Amana dryer is split in two. Electronic-display NED and NGD models report letter codes and an F#E# set, so a sensor or airflow fault shows a code. The many mechanical-timer Amana dryers — the bulk of the budget line — have no display and are diagnosed entirely by symptom. Knowing which kind you own is the first step, because a timer-model fault is read from behaviour, not a number.
The letter and F#E# codes
On electronic models, PF means a power failure mid-cycle, AF (also F4E3) means restricted airflow — most often a lint-clogged exhaust duct rather than a part — and L2 means low or no line voltage reaching the heat circuit, which on an electric dryer often points at a tripped half of the 240V supply. F2E1 is a stuck key and F2E2 a user-interface fault. F3E1 (exhaust thermistor) and F3E2 (moisture sensor) mean a sensor reads out of range, so the Automatic Dryness Control and AutoDry System cannot judge the load. Older numeric F## codes (such as F22/F23 thermistor or F30 airflow) appear on some boards.
Timer-model symptoms
On a mechanical-timer dryer there is no code, so faults are read by symptom: no heat (a failed element, thermal fuse or thermostat on electric; the igniter, gas valve coils or flame sensor on gas), will not start (the door switch, start switch or thermal fuse), will not tumble (a broken belt, seized idler or worn rollers), takes too long or overheats (almost always a restricted vent), or makes noise (worn rollers, bearings or glides).
What to check, and when to call
Clean the full vent path and lint screen first — restricted airflow causes most no-heat, long-cycle and overheating complaints. Check the breaker for an L2 and the door switch for a no-start. If the dryer still will not heat, will not start, will not tumble, or you smell burning, take it out of service and call an experienced, independent technician to diagnose the heat circuit, sensors, belt and rollers with the correct genuine OEM part. See the dryer error codes page or the error codes library, then book dryer repair. Confirm your model at amana.com.