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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 control board can be used to determine failed washer components. Resistor R9 is associated with the pressure, 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 have failed or burned out.

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2 Answers

On my Maytag Neptune MAH-3, the water is running non-stop


check plastic hose out side of tub to pressure switch
if ok replace pressure switch

Oct 12, 2009 | Maytag Neptune Washer

1 Answer

1999 maytag neptune washer stops after filling up with water


There are a couple of common causes for a problem like this. First is a bad door lock assembly that also damages the machine control board (in the control panel). If this is the case the R11 resistor on the machine control board will be burnt.

Maytag has identified seven resistors that relate to specific components that need to be checked or replaced if the resistor is damaged. Listed here are the resistor identification, the circuit involved, and the recommendation:

R9 / pressure switch / check for loose connections or high resistance on switch contacts; replace pressure switch if necessary.

R11 / door lock wax motor / replace door lock mechanism and machine control board.

R51 / hot water valve solenoid / replace water valve and machine control board.

R52 / timer motor / check for loose relay terminal connections and replace machine control board.

R53 / cold water valve solenoid / replace water valve and machine control board.

R143 / (-) 24 Volt DC / contact was made between neutral and the 24 Volt DC circuit.

R162 / electrical buffer circuit / wire harness and machine control board.


Another common issue is a slow water fill fault. If the washer does not fill within a certain time the control will stop on a fault. Usually when this happens the START button can be pushed to continue the cycle.

Washing machines that won't fill or fill slowly often have a restriction in the incoming water supply -- usually in the screens of the inlet hose washers or the water inlet valve itself. Remove the hoses to inspect this condition. If the water inlet valve screens are plugged, replace the water inlet valve.


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Apr 29, 2009 | Maytag Neptune MAH5500B Front Load Washer

1 Answer

maytag mah4000aww, tub overfills


Have you changed your door latch wax motor yet... If you have the brown actuator pin then you want to chuck that wax motor out of there quicker than spit! You want the redesigned wax motor with the black actuator pin. I know of folks where the wax motor failure caused the timer and /or water valves to act up... See www.neptunewaxmotor.com for disassembly photos and other Neptune information.

Jul 01, 2008 | Maytag Neptune MAH5500B Front Load Washer

1 Answer

Maytag Neptune hot water wont shut itself off during ENTIRE cycle!


The water inlet valve is probably defective. There's two solenoids on the inlet valve. One controls the cold water, one controls the hot water. This is also known as a "mixing valve" on some washers. There are a few things that can cause this problem:

1. Water pressure on the hot water tap is too low and not closing the solenoid diaphragm all the way (minimum pressure should be between 10-25 psi).
2. The filter screen on the hot water side needs to be cleaned thoroughly.
3. Valve is defective.

If you have tried cleaning the screens, and have never had water pressure problems before, I would bet the valve needs replaced. I could not find an exact match for the model number you provided, but repairclinic.com has Maytag Neptune parts. Double check your model number and use the search feature on the website. There are two water inlet valves listed there. Depending on which one you have, it can cost between $30 and $74. I hope this helps you. Post back if you have any further questions.

Apr 23, 2008 | Maytag Neptune MAH7500WH Front Load Washer

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