Table of Contents
Advertisement
Section 3 Electronic Control
Test
Test 6:
1. Is the loading door closed?
2. Disconnect the plug from J2 on the control
board and check for continuity between the
pins in the plug.
Test 7:
1. Remove the door lock assembly and
measure the resistance of the PTC.
Test 8:
1. Disconnect the plug from the drive motor and
measure the resistance pins 4 & 5 in the
motor.
1. Remove the belt from the motor and spin the
Test 9:
motor pulley. Does the motor spin free?
2. Spin the tub pulley. Does the tub spin free?
3. Disconnect the plug from the motor and
measure the resistance of the windings. (pin
1 to pin 2, pin 1 to pin 3, pin 2 to pin 3) All
reading should be between 4 and 6 Ohms.
Test 10:
1. Remove the belt from the motor and spin the
motor pulley. Does the motor spin free?
2. Spin the tub pulley. Does the tub spin free?
3. Disconnect the plug from the drive motor and
measure the resistance pins 4 & 5 in the
motor.
4. Disconnect the plug from the motor and
measure the resistance of the windings (pin
1 to 2, pin 1 to 3, pin 2 to 3). All readings
should be between 4 and 6 Ohms.
Test 11:
1. Communication problem. Check the wiring
between the control board and the speed
control board.
Test 12:
1. Check the resistance of the NTC. Is it
around 50K ohms?
1. Have the power company check the
Test 13:
frequency of the incoming power. If correct
replace the control board.
1. Check the resistance of the heating element.
Test 14:
It should be approximately 14 ohms.
2. Check the resistance between the ground
and both heater terminals. It should be
open when heater terminals are disconnected.
Test 15:
1. Check the resistance of the tub in NTC. If Is
it around 4.8 K Ohms?
Test 16:
1. Check the wiring harness between the
control board & the interface board.
Check
Correction
No. Close the door.
Yes. Go the step (2).
Open. Check the door strike. If good, replace
the door switch assembly.
Closed. Replace the control board.
Shorted or open. Defective door lock assembly.
Around 1500 Ohms. Defective control board.
If the reading is between 105 & 130 Ohms, replace
the speed control board.
If the meter reads not than between 105 & 130
Ohms, replace the motor.
No. Replace the motor.
Yes. Go to step (3)
No. Check the tub bearings.
Yes. Go to step (3)
If readings are correct, replace speed control board.
If the readings are incorrect, replace the motor.
No. Replace the motor.
Yes. Go to step (3)
No. Check the tub bearings.
Yes. Go to step (3)
If the meter reads not other than between 105 & 130
Ohms, replace the motor.
If reading is between 105 & 130 Ohms, go to step (4).
If readings are correct, replace speed control board.
If the readings are incorrect, replace the motor.
Wiring bad. Correct wiring problem.
Wiring good. Replace the control board. If the problem
is not corrected replace the speed control board.
No. Replace the water inlet valve assembly
Yes Replace the control board.
If the readings are incorrect, replaced the heating
element.
No, replace the heater assembly.
Yes, check the wiring.
If defective, correct wiring problem.
If the harness is good and none of the LEDs light,
replace the interface board. If this does not correct
the problem, replace the control board.
Note: If only one of the LEDs will not light, replace
the interface board
3-12
Hide quick links:
Advertisement
Table of Contents
