GE Profile Combo Dryer Taking Too Long After Power... | appliancefaults.com

Technical Background:

The GE Profile Combo relies on a main control unit (MCU) to manage the drying cycle. The MCU monitors sensors like the moisture sensor and thermistor, and controls the heating element and motor based on pre-programmed logic. A power surge can disrupt the MCU's program or damage components on the control board, leading to incorrect drying times. Voltage spikes can also damage the heating element directly, though this is less common.

Symptoms:

The GE Profile Combo dryer is taking significantly longer to dry clothes than usual after a recent power surge. The unit seems to be running, but the clothes remain damp even after multiple cycles.

Possible Causes:

Damaged moisture sensor
Faulty heating element
Blocked exhaust duct
Malfunctioning control board
Defective thermistor

Solution:

1

Unplug the combo unit from the outlet or turn off the breaker.
2

Inspect the exhaust duct for lint buildup using a 1/4-inch nut driver to remove vent clamps. Clean thoroughly.
3

Test the heating element for continuity using a multimeter. It should read between 9 and 13 ohms. Replace if open.
4

Check the thermistor resistance at room temperature (approximately 75°F). Refer to the service manual for the correct value. Replace if out of spec.
5

Inspect the moisture sensor bars in the drum for damage or buildup. Clean with a non-abrasive pad.
6

Check the voltage to the heating element during a drying cycle using a multimeter. You should see 240V AC.
7

If all components test good, the control board may be damaged. Replace the control board.

Safety Warning:

Disconnect power to the appliance before performing any diagnostics or repairs. Electrical shock hazard exists when working with live circuits. Always verify the appliance is de-energized using a multimeter before touching any internal components. Use Lock Out Tag Out (LOTO) procedures to ensure the breaker remains off during repairs. The heating element operates at 240V AC.

Prevention:

Install a surge protector on the outlet used by the GE Profile Combo. Clean the lint filter after every drying cycle and inspect the exhaust duct regularly for blockages. Consider a whole-house surge protector for added protection.

Expert Tip:

After replacing the control board, you may need to perform a calibration cycle. Refer to the service manual for the specific procedure for the GE Profile Combo. This often involves entering a service mode by pressing a specific sequence of buttons. The sequence will vary but often involves buttons like Power, Start, or Delay Start pressed in quick succession.

Frequently Asked Questions

•What is the resistance range for the thermistor at different temperatures?

The thermistor resistance varies with temperature. Consult the GE Profile Combo service manual for a resistance chart. At room temperature (75°F), it's typically around 10k ohms, but refer to the manual for exact specifications and tolerances.

•How do I access the service mode on this GE Profile Combo model?

The service mode access varies. One common method involves pressing and holding the 'Start' and 'Temperature' buttons simultaneously for 3-5 seconds. Another is 'Power' -> 'Delay Start' -> 'Power' -> 'Delay Start'. Refer to the specific service manual for your model's access procedure.

•What are the common failure modes of the control board after a surge?

After a surge, the control board can exhibit several failure modes, including blown capacitors, damaged microcontrollers, or corrupted firmware. Visually inspect the board for any burned or bulging components. If you suspect firmware corruption, a technician with specialized programming tools may be needed.

GE Profile Combo Dryer Taking Too Long After Power Surge: Reset Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the resistance range for the thermistor at different temperatures?

•How do I access the service mode on this GE Profile Combo model?

•What are the common failure modes of the control board after a surge?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: