71 code keeps coming up

[Bluefish11]

I keep getting the 71 code when my machine sits overnight, I have credits left on the machine. Why does the 71 code come up? Should I turn it off if I'm not using it?
Or is there another issue going on.
Thank you if anyone can help.

[shortrackskater]

Are you saying it comes up over night with the power left ON?
I've looked this up and found multiple posts on the same subject.
Here's one answer from a reputable NLG member:

A 71 code on E-series machines IS NOT NOT NOT an error!!!!!!   71 000 and 50 000 indicate door was opened -  one code is a NJ code the other is everywhere else.  I know the manual says 71 is  reel error BUT IT IS NOT.  Hope this stops everyone from moving reels and IO boards etc. 
The usual problem with E-series is the DOOR SWITCHes  and REEL MECH lubrication!!!!   If you have a light tower on your machine - when the white light is on - the door is open - so if you lock and close your door and the light stays on - the machine will TILT with a 41 - check the door switches.
When you get 41 42 43 errors - always check that the reel lock levers activated by the coils are not gummed up - if the reels don't stop properly you get the errors.
do the 5 test - this shows if the reels are reading - all 0000 and you have problems - and you will TILT.
hope this HELPS and stops all of the hair pulling - and fruitless checking for this 71.

Another:
Error 71 means the reader card is giving inconsistent reads
or spinning after indexing on first reel.  You can try switching
reel reader card from reel one to reel two.  If you get error
72 it may be the reader card that was on reel one.

Errors 4x or 7x (where x=reel position number) IE;
error 41 or 71 is reel #1 has issues
error 42 or 72 is reel #2 has issues...

Moving reader cards can let you know what
card is bad.  I like to fix reel errors from left
to right.

You may want to just do a search and browse through all the answers on the OLD site: newlifegames.net

[Amechanic]

Do you keep your door locked? Next does your machine still have the switch on the inside of the door by the doors lock? If it does you might want to remove it and hook those 2 switch wires together. Next you might want to inspect the doors cabinet switch located behind the lower door hinge. It is adjustable by loosing the 2 Phillips screw that hold it to the cabinets side right behind the switch.

[Bluefish11]

Ok,
Thank you for the response,
I do keep the door locked and I do have a switch for the door.

[Jon]

I had one a few years ago
When the sun came up the light would shine in the window and give it that error code put a towel over the door at night and see if it does any good sounds stupid but I have seen it since