The short answer
No heat on an AGD dryer usually comes down to the flame sensor rather than the valve: the sensor has to see the igniter before the control will open the gas, so a failed sensor gives a machine that tries and never lights. The order that follows puts the likeliest and cheapest causes first, and it is the order worth working in rather than starting with the part that sounds most serious.
What you actually observe
- A click at the start of the cycle and then nothing — The control asking for heat and the burner failing to establish.
- The igniter glows and no flame follows — The sensor or the valve, which is the next step after the igniter.
- The drum turns for a full cycle and the air stays cold — The drive side is healthy and the burner never lit.
- Nothing runs at all — NEAR MISS: read the will-not-start page for this machine.
- Body: The AGD listings carry a masked suffix in the spine, so the trailing characters on your rating plate will differ from the table without changing the diagnosis.
What causes it on the AGD platform, in likelihood order
- 1. The flame sensor in the ignition sequence — The control will not open the gas valve until the flame sensor confirms the igniter is hot. A failed sensor gives an igniter that glows, cools and never produces a flame. It ranks first because the letter that separates AGD from its electric counterpart in this roster is the one that marks the fuel, and on the gas build the ignition path is the consumable.
- 2. The igniter — The sequence is diagnostic: no glow at all points here, while a glow with no flame points further down the chain. Second on the AGD ignition path, checked immediately after the part above it because the two present almost identically.
- 3. The coils that open the valve — The coils open the valve once the sensor gives permission. When they weaken, the burner lights late, briefly, or not at all, and the pattern is often intermittent before it is permanent.
- 4. The gas supply to the machine — It is checked early because it is free to check and because it is an installation question rather than an appliance repair.
The order to work in on this platform
- 1. Note whether the igniter glows and then cools with no flame — That exact sequence is the flame sensor's signature.
- 2. Listen and look for the igniter glow at the start of a cycle — No glow at all names the igniter; a glow with no flame does not.
- 3. Note whether it lights when cold and fails when hot — Intermittent lighting that tracks temperature points at the coils.
Before you open anything
Safety
If you smell gas: do not switch anything on or off, leave the building, and call the gas utility or 911 from outside. Do not look for the leak yourself. Otherwise, unplug the dryer or switch off its breaker before any panel comes off, shut the gas valve behind the machine, and remember a capacitor can hold a charge after the power is off. Never bypass a thermal fuse to get heat back.
Models in the AGD family — The listings this family covers; it is a family page, not a model page.
Reference| Model number | Family key |
|---|---|
| AGD4600T** | amana:dryer:agd |
When to call a technician
The line is the burner. Confirming the supply valve, checking other gas appliances and clearing the duct are owner work; everything on the fuel path belongs to a technician, and a machine that smells of gas is an evacuate-and-call situation rather than a diagnostic one. The AGD roster is a single listing, AGD4600T**, so everything here applies to one build rather than to a range.
The other symptoms covered for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
