Component failures on Maytag Neptune Font Load Washers such as the pressure switch, wax motor, hot and cold water valve solenoids, timer motor, 24
VDC circuit, and the overall
electrical buffer circuit have significant effect on the machine control board. Failed resistors on the
machine control board can be used to determine failed washer components. Resistor R9 is associated with the pressure switch, R11 is for the wax motor, R51 for the hot water valve solenoid, R52 for the timer motor, R53 for the
cold water valve solenoid, R143 for the 24
VDC circuit, and R162 for the overall electrical buffer circuit. The
TRIAC Q6 is also associated with the wax motor while
TRIACS Q3, Q9, and Q17 are for the timer motor, cold water valve solenoid, and hot water valve solenoid respectively. These
TRIACS must also be replaced should the corresponding resistors
fail or burn out
especially when there's no power going to
the associated
component.
The most common problem
experienced is
the failure of the wax motor as indicated by the
inability of the washer to advance to the high speed spin cycle with
the "door locked" light not lit. Replace the
TRIAC Q6 and the resistor
R11 on the machine control board to get the machine back into operation. Use MAC97A6 or NTE5656 for Q6 and a 3.9
kilo-ohms carbon or carbon film resistor for R11. It is recommended to install a 1/2-ampere
pico fuse in series with
the wax motor to prevent damage to Q6 and R11 should the wax motor shorts out and fails again.
Replacement of the wax motor is a must before installing the repaired or new machine control board to prevent damage to the repaired or new part. Make sure the wiring harness
connections of washer
components are good and snug fit. Reseat the connectors several times to clean off corrosion build up both on the connectors and terminals.
