I vacate m91 wrench flashing 4 times and won't turn off...please help!

The orange light on solid should signify it is charging. If the orange light flashes, you count the flashes and that is the error code

http://www.invacare.com/doc_files/1125038.pdf

https://www.google.com/search?q=invacare+m91+orange+wrench+light

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you can call the mfg for more info
or page 27
copy and paste

http://www.invacare.com/doc_files/1125038.pdf

You are getting a motor error code. Check motor wiring and connection to the main control box. Motor may have gotten unplugged when changing the batteries.

Hello,

Seven blinks is most often the joystick. A Invacare Remote Programmer can be plugged in to the joystick to verify this.

There is a problem with the remote joystick. Could be a bad connection or bad harness to the remote joystick. If harness is fine then the joystick has issues and needs to be replaced or rebuilt.
Try the 4-wire harness first.

There's anFDA Class 2 recall Z-2270-2013 on Invacare joysticks. See http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfres/res.cfm?id=118605

Check the freewheel levers they should be in the drive postion turn on and try to see if the lights quit flashing. If the don't then there is a problem with the electrical brake system Hope this helps

I am new to this request. Hope you have had your chair fixed by now, but in case not. If you still need help I really need more chair information. What joystick? Many different joysticks with different yellow lights. With a 4 or 5 blink it could be a motor or battery voltage problem.

Your chair has a motor problem. The code does not tell which side it is. Make sure both motors have the brakes in the drive position before turning on the chair. Also check that both motors are plugged into the main control module in the base of the chair.

well,,, um try getting it a new power battery?