Maytag dryer MGDB766FW0 F3E2 error flashing and dryer won't start

Hi, I’m Mike, your home appliance troubleshooting expert. Thanks for the model and error details—on this dryer the flashing “Check Lint Screen” is usually just a reminder, but the code F3E2 matters here. When you try a plain Timed Dry cycle (not a sensor/automatic cycle) and press Start, does it run at all or does it immediately flash the same code and stop?

When you press Start on a simple Timed Dry cycle, does F3E2 pop up immediately without the drum moving, or does it start tumbling and then stop?

When you press Start, do you hear a click or hum from the dryer even though the drum doesn’t move, or is there no sound at all?

Thanks—that helps. Here’s what your dryer is telling you:

• The flashing “Check Lint Screen” is just a reminder and isn’t the cause of the no‑start.
• Code F3E2 on this Maytag model points to a fault in the moisture sensing circuit (the two metal moisture sensor bars) being read as open or shorted. When the control sees this fault, it can block the Start command—hence no relay click and no tumble.
• Most likely causes: • Loose/unplugged wiring at the moisture sensor bars (inside the drum, usually just in front of the lint screen grill).
  • Broken/shorted harness from the sensor to the main control.
  • Contamination on the sensor bars from fabric‑softener sheets (less likely to cause a no‑start, but possible).
  • Less common: a failed main control misreading the sensor.
  • Note: On a few Whirlpool/Maytag variants, F3E2 can also map to a shorted inlet thermistor on the blower housing; that would also prevent starting.

What this means functionally:

• If only the moisture sensor is at fault, Timed Dry should usually run, while Sensor/Automatic cycles may be blocked or behave oddly. Since you get no click at all, the control likely thinks the sensor (or thermistor, if applicable) is in a hard fault.

Safety note: If you decide to inspect anything, unplug the dryer first and turn off gas supply; sharp sheet‑metal edges inside can cut.

Would you like me to walk you through simple checks to confirm whether it’s the moisture sensor circuit, the thermistor, or the control—no special tools required?

Great—here’s a clear plan to pinpoint F3E2 and the no‑start.

Safety first

• Unplug the dryer before any inspection; turn off gas supply at the shutoff valve. Sheet‑metal edges are sharp.

What F3E2 means on this model

• It’s a sensor circuit fault that can block the Start relay—commonly the moisture sensor circuit, and on some variants the inlet thermistor on the blower housing. That’s why you hear no click.

Quick checks (no tools)

1. Power reset: Unplug 1 minute, plug back in. Try a simple Timed Dry (20 min) and press Start. If it still flashes F3E2 immediately with no click, continue.
2. Clean the moisture sensor bars: Open the door—look for two parallel metal bars on the inside of the front bulkhead (just in front of the lint screen area). Scrub both bars with rubbing alcohol or vinegar on a cloth to remove dryer‑sheet residue. Try Timed Dry again.

Harness inspections (basic access) 3) Reseat the moisture‑sensor connector:

• Unplug dryer. Remove the lower front toe panel (two screws along the very bottom edge; panel drops down and off).
• Behind it, look up at the inside of the front bulkhead beneath the lint chute: find the small two‑wire plug going to the moisture sensor bars. Reseat the connector on both ends and look for a pinched or broken wire.

4. Reseat/check the inlet thermistor connector:
   • In the same area, locate the round blower housing behind the lint screen duct. The small two‑wire sensor mounted to that housing is the inlet thermistor (near a one‑shot thermal fuse).
   • Reseat its plug; make sure the wires aren’t rubbed through.

If you have a multimeter (optional, but definitive)

• Inlet thermistor (room temp ~70–80°F): should read roughly 10kΩ. A reading near 0Ω = shorted; OL/infinite = open. Either fault can trigger F3E2 and a no‑start—replace the thermistor if readings are bad.
• Moisture sensor harness: Each bar to chassis should be open (OL), and the two bars should not be shorted together. A direct short or an open in the harness can set F3E2.

What to expect after checks

• If cleaning/reseating the moisture‑sensor wiring fixes it: Timed and Sensor cycles will start normally.
• If the thermistor is shorted/open: replace the thermistor. It’s a simple swap on the blower housing once the panel is off.
• If wiring and sensors check good but F3E2 persists with no relay click: the main control is likely misreading the circuit and may need replacement.

Optional: built‑in diagnostic

• With power restored, you can enter Service Diagnostics (three‑button sequence repeated 3× within 8 seconds on most Maytag consoles). If it displays only F3E2 and won’t run tests, that reinforces a hard sensor fault.

If you want, I can tailor exact disassembly steps for MGDB766FW0 with diagrams and where each connector sits, or walk you through the thermistor meter test step by step.