Amana furnace is completely dead; no LED lights, no blower or inducer operation.

Safety: Use caution when working around live electrical circuits. Turn off the breaker before opening junction boxes.

• Check breaker: Locate the furnace breaker in the electrical panel. Reset if tripped. If it trips again immediately, call a technician.
• Verify service switch: Ensure the furnace service switch (often on or near the unit) is ON.
• Check blower door switch: Make sure the blower door is properly installed and depressing the door safety switch.
• Inspect control board fuse: With power off, remove the low-voltage fuse (usually 3–5A automotive style) on the control board. Replace if blown, but investigate for shorts in thermostat wiring.
• Test transformer: With power on and doors in place, measure primary voltage to the transformer (120V) and secondary (24V). Replace transformer if primary is present but no secondary output.