Mah-1 neptune washer door lock lite not on during spin cycle

Well your drain pump needs attention for sure. There could be an object lodged against propellers or it may need to be relaced. Try unplugging the connector that goes to the pump and plugging back in. Also try tapping the the motor part of the drain assembly while in spin cycle before replacing. Good luck.

Most likely a motor control issue or possibly the motor itself

There's an auxiliary switch in the door lock.switch assembly that is activated at the end of the wash cycle for the machine to advance to the spin cycle. The machine will NEVER advance to the spin cycle unless the auxiliary switch is activated as a safety feature to prevent the door from opening during a high-speed spin cycle that may result in physical injury. The drum tumbles back and forth while the machine control checks the auxiliary if activated but since it's not, the control will not command the motor speed control to spin the drum at high speed. These symptoms may indicate a faulty door lock/switch assembly and may need replacement. Click on the links below for the detailed troubleshooting instructions and replacement of the door lock/switch assembly.

Electrolux and Frigidaire Washers Door Lock/Switch Assembly Troubleshooting
Replacing the Door Lock/Switch Assembly on Electrolux and Frigidaire Washers

If noise occurs only during spinning cycle, then the 2 bearings and seal need to be replaced.

If motor is not gaining speed during spin check the capacitors.

Please see the following Whirlpool / Maytag service manual for Neptune washers.
https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/dc59d905140253e18525729c005765f4/$FILE/Maytag_Neptune_Washer.pdf

On page 3-1 the manual explains that if the washer shuts off during the spin cycle, the problem points to a weak spring in the door lock mechanism.

"Shuts OFF In The Middle Of The Spin Cycle:
During the spin cycle, the machine control
monitors the door lock mechanism to ensure
the door is locked. This is done through the
door lock enable switch. During "lock mode,"
the shaft of the door lock mechanism is
pressed forward by the door lock wax motor,
and the shaft presses in the button of the door
lock enable switch. If the machine control
board sees the switch OPEN during the spin
cycle, the machine control board will automatically
shut the washer OFF. This is caused
by a weak spring in the door lock wax motor.
Replace the complete door lock mechanism.

if you remove the back console, youll be able to see the "machine controlboard". appro. ha;f way down and favoring the left side of circuit board youll notice a small blue relay cover(MAYBE 3/8"X1/2" in size. well just above that relay cover you see a resistor that will be physically burnt out( a real noticable burn ring around it) if this is the case you need to replace the board as well as the "wax motor" within the latch assy.

Hi!

Is it pumping water? If not then pump is bad.
Is the door locking? If the door will not lock, the washer will not enter a spin mode. See if the lock light is lite on the console.

Check for continuity across the Door Lock, Spin Enable Switch when the switch actuator button is pressed in. If there is no continuity across the Door Lock, Spin Enable Switch, replace the Door Lock Switch Assembly.(Check for 120 vac across the Door Lock Wax Motor)

Please rate this solution and ask for further clarifications if needed.

Thanks
Rylee

does the washer actually go into high speed spin? if not the wax motor in the door lock may be no good. that would prevent the door from locking and the indicator on the display would not light.