Touch Sensors - GE DCVH480EK Technical Service Manual

Touch Sensors

The touch sensor consists of 2 sensors permanently
attached to the fi lter inlet.
Note: The 2 touch sensors in the fi lter inlet are not
replaceable. To replace the sensors, replace the fi lter
inlet.
The sensors are connected to the main control
board. The sensors are spaced approximately ½-in.
apart, which creates an open circuit to the control.
• The control board utilizes a low-voltage
capacitor that charges to approximately 5 VDC
when the circuit is open and discharges to less
than 1 VDC when the circuit is shorted.
• When wet clothes tumble across the two
sensors, the clothes create a very low resistance
between the sensors, which discharges the
capacitor.
• As the clothes become dry, their resistance
value increases and the charge across the
capacitor builds to approximately 5 VDC.
• Operation of the touch sensors can be checked
by using the service test mode. (See
.)
Mode
• Proper leveling of the dryer is vital for accurate
sensor drying. If the front of the dryer is raised
too high, clothes will tumble toward the rear of
the drum, preventing contact with the sensors.
This could produce a false dryness reading.
To remove the touch sensor assembly:
1. Open the door and remove the lint fi lter.
2. Remove the 2 Phillips-head screws that attach
the duct outlet to the drum support.
3. Lower and remove the duct outlet.
3. Disconnect the sensor wires.
Note: The lower fi lter cover is attached to the fi lter
guide with 2 tabs, 1 on each side.
4. Using a fl at blade screwdriver, pry out each side
of the lower fi lter cover and release it from the
tabs on the fi lter guide.
Service Test
5. Remove the 3 Phillips-head screws from the
inside of the fi lter inlet.
– 26 –
Duct Outlet
Disconnect
Disconnect
Lower Filter Cover
Tab
(Continued Next Page)