What Does Monogram Dryer Error Code E3 Mean?
Error code E3 on a Monogram dryer indicates a shorted outlet thermistor. The outlet thermistor monitors the temperature of exhaust air leaving the drum. When it short-circuits, it reads near-zero resistance, sending an artificially high temperature signal to the control board — triggering E3 to prevent the dryer from operating unsafely.
Common Causes of E3
- Failed outlet thermistor with internal short circuit
- Wiring harness short between the thermistor leads
- Thermistor connector corroded or moisture-contaminated
- Defective control board
How to Troubleshoot E3
- Power reset: Unplug the dryer for 60 seconds and restart to clear any transient fault.
- Locate the outlet thermistor: The outlet thermistor is mounted on the exhaust duct near the blower or lint screen housing.
- Inspect wiring and connector: With power off, check for pinched wires, bare wire contacts, or a corroded connector at the thermistor. Reseat the connector firmly.
- Test thermistor resistance: Disconnect the thermistor and measure resistance with a multimeter. A reading near 0 ohms confirms a short circuit — the thermistor must be replaced.
- Replace the outlet thermistor: Install a genuine Monogram replacement part. Aftermarket thermistors may not meet the calibration tolerances required for accurate temperature management.
If E3 persists after thermistor replacement, the control board may require testing. Call 844-752-7887 for expert Monogram dryer diagnosis.