GE Profile Dishwasher Dry Boost Fan Motor Replacement... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) sends a 120V AC signal to the Dry Boost fan motor during the drying cycle. A thermistor monitors the temperature near the fan, providing feedback to the MCU. If the MCU detects a fault, it may shut down the fan and display an error code. The door switch must be engaged for the dry cycle to initiate.

Symptoms:

The GE Profile dishwasher does not dry dishes effectively, and the Dry Boost feature is not working. You may hear no fan noise during the dry cycle or receive an error code related to the drying system.

Possible Causes:

Faulty Dry Boost fan motor
Damaged wiring harness to the fan motor
Defective control board/MCU
Obstructed fan blade
Failed thermistor near the fan
Door switch malfunction

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Open the dishwasher door and remove the lower rack.
3

Locate the Dry Boost fan assembly, typically near the top or side of the dishwasher cavity.
4

Using a 1/4-inch nut driver, remove the screws securing the fan assembly cover.
5

Disconnect the wiring harness from the fan motor. Test voltage at the harness with a multimeter; you should see approximately 120V AC when the dry cycle is active.
6

Remove the fan motor from the assembly. Install the new fan motor and reconnect the wiring harness.
7

Reassemble the fan assembly cover and reinstall the lower rack. Restore power at the breaker panel and test the Dry Boost function.

Safety Warning:

Disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental re-energizing of the circuit. Be cautious of high voltage when testing electrical components.

Prevention:

Periodically inspect the fan area for obstructions. Ensure the dishwasher is properly leveled to prevent water from pooling near the fan motor. Run a dishwasher cleaner cycle monthly to prevent buildup.

Expert Tip:

Access the dishwasher's service mode by pressing and holding the Start button for 5 seconds then immediately pressing the Heated Dry button, then the Start button again. This can provide diagnostic codes related to the Dry Boost system for enhanced troubleshooting.

Frequently Asked Questions

•What is the resistance of a working Dry Boost fan motor?

A working Dry Boost fan motor typically has a resistance between 50 and 150 ohms. Use a multimeter to measure the resistance across the motor terminals.

•How do I test the thermistor near the Dry Boost fan?

The thermistor's resistance changes with temperature. You can test it with a multimeter. Check the service manual for the specific resistance values at different temperatures. If the resistance is significantly off or the thermistor is open/shorted, it needs replacement.

•Where can I find the correct replacement Dry Boost fan motor for my GE Profile dishwasher model?

You can find the correct replacement part by searching online at appliance parts retailers using your full model number. Also check the GE appliance parts website and confirm that the part is compatible with your exact model number.

GE Profile Dishwasher Dry Boost Fan Motor Replacement Cost Guide 2025

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the resistance of a working Dry Boost fan motor?

•How do I test the thermistor near the Dry Boost fan?

•Where can I find the correct replacement Dry Boost fan motor for my GE Profile dishwasher model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: