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Dishwasher completes its cycle but dishes remain wet or damp — the vent blower is not expelling moist air from the tub during the drying phase.
Control board displays ER:UO or UO fault because the optical sensor in the vent assembly cannot confirm the plunger is in the closed position after 5 consecutive attempts.
Unit stops or refuses to initiate a new wash cycle due to a latched vent fault — replacing the assembly clears the error and restores normal operation.
A stuck, limescale-clogged, or electrically failed blower motor produces clicking or buzzing sounds from the right rear top corner of the tub during operation.
Steam and moisture cannot escape the tub when the vent flapper is stuck open or the fan motor has failed, resulting in heavy condensation on interior walls and door.
💡 Pro Tip: Diagnosing Your Frigidaire Dishwasher Vent Blower Failure
Your part is likely the culprit if you notice any of the following:
⚠️ Dishes come out soaking wet after a full wash-and-dry cycle
⚠️ ER: UO or UO error code flashes on the control panel within the first minute of operation
⚠️ Clicking or buzzing noise from the upper-right rear area of the dishwasher tub
⚠️ Visible limescale buildup or debris jamming the vent flapper open or stuck closed
🔍 Diagnostic shortcut: Enter service test mode via the tech sheet found behind the toe-kick or inner door panel. The mode toggles each component individually — if the vent assembly fails to actuate, fault code ER/UO will appear, confirming this is the part to replace before ordering a control board.
📦 What's in the Box
✅ 1× Dishwasher Vent Blower Assembly (12V, white, with wiring harness connector — fits 5304523304 / AP6977370 / 154861101 applications)
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Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.
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