Service manual

Section 3 Electronic Control Testing
3-22
Dryer completely
inoperative.
Does the control beep or
the LED flash when the
start button is pushed.?
No.
Defective household
power supply or
broken wire between
dryer terminal block
and thermal limiter.
Electric dryer completely inoperative.
Note: Always check wiring to the components.
Note: If a fault code is displayed, the dryer will not operate.
0.
Measure the voltage drop
between the red wire on the
thermal limiter and neutral.
Yes.
Measure the voltage drop
between the orange wire on
the thermal limiter and
neutral.
120VAC.
Defective thermal
limiter.
0.
120VAC.
Is an error
code displayed?
Refer to error
code chart.
Yes .
Measure the voltage drop
between pins 1 & 2 of J-4
120VAC.
Defective control
board.
Defective door
switch.
0.
No.
Measure the voltage drop
between pins 1 & 2 of the
eight pin plug of the wire
harness to the control
board.
Broken wire between
thermal limiter and
the control board or
open wire between
pin 2 and neutral.
0.
120VAC.
Defective control
board.
Check the resistance of the
control thermistor at room
temperature.
50,000 Ohms +/-
10%.
Defective
electronic
control.
Defective
thermistor.
More or less than
50,000 Ohms +/- 10%.
>120VAC - 0<