Door locked and takes water will not empty or spin

The machine knows what the water level should be at every step of the program, so if its full when it should be empty, is not filling when it should be or is taking too long to fill or empty the program will abort and count down in seconds as you describe.
First - check the drain filter for blockage!! if clear, can you hear the drain pump running on 'drain' program? a chug chug chug noise. If not pump may be jammed or seized - or the drain tube maybe be blocked at the waste connection on the sink, etc. Or maybe the water supply pipes have blocked or got turned off? Possibly the waste pipe may not have been installed correctly and the machine is syphoning empty? ie the end of the waste pipe is lower than the water level in the machine - so it syphons empty like draining petrol from a petrol tank! That would empty the machine when it should be full.
Check all the basics of filling, draining and filter before suspecting anything else.

door switch or panel troubleshooting

If anyhow the drain pump is blocked the spinning will be blocked. Check for a forrign object in the drain pump. If you can feel/hear it buzz (very quietly) while it should be pumping out it might be jammed up with something. That however is kind of rare with the angled tub the Neptune uses.
Are you sure the machine is actually not pumping out, or is it possible its just turning off in the rinses?
Reason I'm asking is the control will shut the machine down if its taking too long to fill up. Many times it will fill fine for the wash fill, but because the rinse takes twice the ammount of water it activates the system and shuts down while its half way filled. Look for a slow cold water fill for that problem.

Is the door locking in the spin? One very common problem on the older 3000 and 4000 series machines is the R11 resistor on the machine control board bruning out leaving the door lock inoperative. If the door won't lock, it won't spin. I do believe, however, the machine will still pump out. But many times what happens is the pump removes all the standing water, but without spinning everything in the tub stays soaked. The saturated clothing drains the water out and then leaves a few inches in the bottom of the tub.

If you have the newer style Neptune (with the control panel on the front of the machine) only the top paragraph applies.
Thank you Sir, Have a nice day.

Hi, could be your timer motor, timer or water level switch, first push timer knob in and manually advance to wash or spin cycle (program) then pull knob, see if machine operates, let me know, then i can tell you exactly what's problem.also advance timer, to spin cycle (program) machine should pump out water, or you can lower drain hose into bucket and empty machine, you should empty machine and try again, let me know what happened, we can solved this together. good luck.

pull your washer out. put near door if poss then put the waste pipe down to floor level to empty the water. if there is to much water in the drum it will not spin try your pump

take water lines off of water valve at rear of unit and clean dirt out of screens.

my indesit washer/dryer wd12x programme dial goes all the way when it reaches spinning

Sounds like your drain poump is failing. It's spinning lighter loads but not able to take a full load. I woule definately replace the drain pump,

door switch bad?

problem may just be that drum is not turning so you think program is stopped. try cancelling and select spin program and see if you get spin