GE Profile UltraFast Combo: "Check Vent" Light Stays On... | appliancefaults.com

Technical Background:

The MCU (Main Control Unit) monitors airflow through the vent duct using a sensor. The sensor sends a voltage signal back to the MCU. If the airflow is restricted or the sensor is faulty, the MCU will trigger the 'Check Vent' light. The voltage signal can be disrupted by wiring faults.

Symptoms:

The 'Check Vent' light on the GE Profile UltraFast Combo remains illuminated even after cleaning the lint filter and vent duct. This indicates a potential issue with airflow or the venting system.

Possible Causes:

Lint buildup in the vent duct restricting airflow.
Faulty vent duct sensor.
Blocked or kinked vent hose.
Software glitch in the main control board (MCU).
Loose or corroded wiring connections to the vent sensor or blower motor.

Solution:

1

Unplug the Combo unit from the 120V AC outlet.
2

Disconnect the vent hose from the back of the unit and inspect it for kinks or blockages. Clear any obstructions.
3

Locate the vent duct sensor (usually near the blower housing). Use a multimeter to check the sensor's resistance. Refer to the service manual for the expected resistance range.
4

Inspect the wiring harness connected to the vent sensor and the blower motor for any loose or corroded connections. Clean and re-secure as needed.
5

If the sensor resistance is out of range, replace the vent duct sensor.
6

After replacing the vent sensor or clearing blockages, plug the unit back in and run a test cycle to see if the 'Check Vent' light turns off.
7

If the light remains on, the MCU may need to be reset or replaced. Contact a qualified technician.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental energization. Be aware of potential high voltage (120V AC) when working on electrical components.

Prevention:

Clean the lint filter after every load. Inspect the vent hose at least every 6 months for kinks or blockages. Annually, disconnect and thoroughly clean the vent duct.

Expert Tip:

Some GE models have a diagnostic mode that can be accessed by pressing and holding specific buttons simultaneously. Refer to the service manual for the exact sequence for this model. This mode may provide more detailed error codes.

Frequently Asked Questions

•Where is the vent duct sensor located exactly?

The vent duct sensor is typically located on the blower housing or near the exhaust outlet of the dryer section. Refer to the appliance's service manual for the exact location.

•What is the acceptable resistance range for the vent duct sensor?

The acceptable resistance range varies depending on the specific sensor. Consult the service manual for your GE Profile UltraFast Combo model for the correct values. It is typically measured in ohms.

•If the vent hose is clear, but the light is still on, could it be the blower motor itself?

Yes, a failing blower motor can also cause the 'Check Vent' light to illuminate. The motor might not be providing sufficient airflow, triggering the sensor. Check the blower motor windings for continuity and the blower wheel for obstructions.

GE Profile UltraFast Combo: "Check Vent" Light Stays On After Clean - Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where is the vent duct sensor located exactly?

•What is the acceptable resistance range for the vent duct sensor?

•If the vent hose is clear, but the light is still on, could it be the blower motor itself?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: