GE Profile Dishwasher Dry Boost Fan Not Turning On:... | appliancefaults.com

Technical Background:

The dishwasher's main control unit (MCU) sends a signal to a relay on the control board to activate the Dry Boost fan. This relay closes, sending 120V AC to the fan motor. A faulty fan, wiring issue, or relay can interrupt this process.

Symptoms:

The homeowner reports that the dishes are not drying properly, and they do not hear the Dry Boost fan running during the drying cycle. The Dry Boost option may be selected, but there is no change.

Possible Causes:

Faulty Dry Boost fan motor
Defective fan relay on the control board
Wiring harness issue between the control board and the fan motor
Tripped thermal overload switch on the fan motor (if equipped)
Door switch malfunction preventing fan activation during the cycle
Software glitch in the main control unit (MCU)

Solution:

1

Disconnect power to the dishwasher at the breaker panel. Lock Out/Tag Out (LOTO) procedures MUST be followed.
2

Access the Dry Boost fan motor. Typically located near the vent or on the side of the dishwasher tub.
3

Inspect the wiring harness and connections leading to the fan motor for any signs of damage or corrosion. Repair or replace as needed.
4

Using a multimeter, check for 120V AC at the fan motor connector during the Dry Boost cycle. If no voltage is present, proceed to step 5.
5

Locate the main control board. Using a wiring diagram, identify the fan relay.
6

Check the relay for continuity using a multimeter. If the relay is open or shows high resistance, replace the control board.
7

If voltage is present at the fan motor but the fan is still not turning, replace the Dry Boost fan motor.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. High voltage is present inside the appliance, and failure to disconnect power can result in serious injury or death. Lock Out/Tag Out (LOTO) procedures MUST be followed.

Prevention:

Regularly clean the dishwasher filter to prevent food particles from accumulating and potentially affecting the drying performance. Periodically check the spray arms for clogs.

Expert Tip:

Many GE Profile dishwashers have a service mode. To enter service mode, press and hold the 'Start' and 'Select Cycle' buttons simultaneously for 5 seconds. This allows you to manually activate certain components, including the Dry Boost fan, for testing purposes.

Frequently Asked Questions

•Where is the Dry Boost fan located in my specific GE Profile model?

The Dry Boost fan is typically located near the vent on the side or top of the dishwasher tub. Consult the specific model's service manual for the exact location.

•How do I test the door switch to ensure it's not preventing the fan from running?

Use a multimeter to check the continuity of the door switch when the door is open and closed. The switch should be closed (showing continuity) when the door is closed and open (no continuity) when the door is open.

•If the control board needs replacement, does it require programming?

Yes, some GE Profile dishwasher control boards require programming after replacement. Refer to the service manual for specific programming instructions or contact a qualified technician.

GE Profile Dishwasher Dry Boost Fan Not Turning On: Diagnostic Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where is the Dry Boost fan located in my specific GE Profile model?

•How do I test the door switch to ensure it's not preventing the fan from running?

•If the control board needs replacement, does it require programming?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: