I have a Maytag mah4000 washer for about 10 years now. I started having problems with it about 3 months ago. When I press start, the "door lock" light comes on, water starts entering the machine for about 1 minute and then the machine turns off. The "door lock light goes off after about 30 seconds. Three months ago, if I would press the start button again, the machine would go through a complete cycle. As time went on I would have to press the start button more times for the machine to work through a complete cycle. Now, if I press the start button again, the same thing happens...door locks, water comes in for about 1 minute and then machine turns off. If I keep doing this, there will be one time where the water stops, and I hear the motor surging for about 5 seconds, and then I hear a click in the console, and then the machine turns off.
I lived in Canada and moved to Costa Rica a few years ago and brought the washing machine with me. Maytags are not sold here and no parts either. I've called 2 repair men. Neither even knew how to run diagnostics on the machine. I will have to resolve this on my own.
I got a copy of the mah3000 model (which is also applicable to the mah4000 model).
I verified that the main control board in the console has no signs of anything burning especially R11 and D6.
I inspected the motor control board and also no signs of anything burnt...the fuse was still good.
I plugged in the machine, set the timer to "delay". The delay light came on. I verified that there was 120 volts between the L and N terminals on the motor control board.
I unplugged the machine, disconnected the JP4 interface from the motor control board, plugged in the machine, pressed the on button on the console while keeping the “door closed” sensor near the door latch pressed. The tub started spinning and I timed it at 50 rpm. I pressed stop and then unplugged the machine.
I disconnected the red RD 30 wire from the motor control board and the main control board. I tested continuity…there was zero resistance along the wire.
I then verified continuity of all the wires that go from the main control board to the timer. They were all good.
Reassembled everything and tried running a was cycle.
The machine still behaves the same.
What else can I do?