GE Profile DPVH890EJ Technical Service Manual

Also see for Profile DPVH890EJ: Owner's manual and installation instructions Dimensions and installation information Installation information

– 15 –Caution: Upon reassembly, ensure that the doorswitch, drum light, and sensor wiring are retainedand routed properly to avoid contact with the drum.Note: The 2 sensor rods in the air duct assembly arenot replaceable. To replace the sensor rods, replacethe air duct assembly. (See Air Duct Assembly.)The sensor rods are connected to the•main control board. The rods are spacedapproximately ½-in. apart, which creates anopen circuit to the control.The control board utilizes a low-voltage•capacitor that charges to approximately 5 VDCwhen the circuit is open and discharges to lessthan 1 VDC when the circuit is shorted.When wet clothes tumble across the two•rods, the clothes create a very low resistancebetween the rods, which discharges thecapacitor.As the clothes become dry, their resistance•value increases and the charge across thecapacitor builds to approximately 5 VDC.Proper leveling of the dryer is vital for accurate•sensor drying. If the front of the dryer is raisedtoo high, clothes will tumble toward the rear ofthe drum, preventing contact with the sensorrods. This could produce a false dryness reading.Moisture SensorThe moisture-sensing circuit consists of 2 sensorrods. They are mounted beneath the lint filter on thedrum side of the air duct.4. Remove the single Phillips-head screw andthe drum light receptacle from the drum slideassembly.Drum LightReceptacleDoor SwitchTab (1 of 2)Door SwitchThe door switch is fastened to the front panel by 2locking tabs (1 on each side). When using non-rackdry cycles, when the dryer door is closed, the switchwill complete the drum motor circuit, allowing dryeroperation. When the door is open, the switch willopen the drum motor circuit, interrupting dryeroperation. Opening the dryer door will also causethe door switch to close the drum light circuit,allowing the drum light to be energized.When using the rack dry cycle, the drum motorcircuit is not energized. The energized blower motorcircuit is not affected by opening or closing the door.However, when using the rack dry cycle, openingthe door or selecting DRUM LIGHT on the controlpanel will energize the rack dry interlock relay andopen the heat circuit.