Question about Invacare Pronto M51 Power Wheelchair

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Won't move pronto m51

Battery is charged, joystick come on but three lights are blinking

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  • dcolla May 11, 2010

    How many times do they flash?

  • Jamie May 11, 2010

    battery level lights or gear speed lights?

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Three lights flashing on your chair indicate a left motor fault. Make sure that all of the connections inside the shroud are tight by physically testing them. If all of the connections are good, and the fuses are good, then it's time for a trip to an authorized repair facility. Here is a link to the M51 owners manual if you haven't one. Page 24 has the fault code guide.
http://www.invacare.com/doc_files/1125085.pdf

The controller monitors all of the functions on the chair, brakes, motors, joystick, charger etc. The three flash fault indicates an "open" circuit. Open, like a switch or blown fuse is open, or a wire is cut or burned in half, or a connector is unconnected, or partially connected. The latter is what you are hoping for. Wires burned in half is the usual cause for a motor fault, and with powerchairs, is usually the result of the chair getting stuck in or against something it can't get out of and the operator over-amping the motors. Motors do, just go bad sometimes, for no reason. Very rarerly, however.

You can also check the brushes on the motor too. There's two quarter-sized black plastic screw-plugs on the ends of the motor opposite each other. Unscrew them and examine the brushes. The springy coils should be springy. Overheating can cause them to be brittle, or even burned in two. Check the lench of the brush, the dark rectangular cube at the end of the springs. It should be curved and polished at the end, and a little over a half-inch long. If it is near a 1/4 inch, it needs replaced, or if there is any evidence of overheating, replace. Good luck.

Posted on Jul 09, 2009

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Invacare p9000xdt when chair is cut on all lights on joy stick flash and chair will not move. batteries are good.

Posted on Jun 21, 2010

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1 Answer

My pronto m51 when i charge it the lights do not come on until i push shut off again


If you are referring to the three lights as the three colors red, yellow and green. Then you would normally get that. The circuit is telling you that something is attached to the chair, has faulty component or a motor unlocked. and you can't move.The rapid blinking would tell me that you have a controller fault or a motor fault and a rapid scroll left to right would be an inhibit. I would need to know which one it is doing to know for sure what what to look for. If it is just three lights then I would definitely look at the joystick and/or controller being faulty.

Feb 13, 2015 | Invacare Pronto M51 Power Wheelchair

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How do I troubleshoot the issue? I just purchased an older invacare pronto M51 sure step., I charged the batteries over night, it will not move. There are 3 flashing lights in front of joystick? I cant...


The 3 lights are blinking a diagnostic code. One code for batteries that are to weak is a 2 blink. The 3 lights blink together between 1 and 7 times then they all stop for a second then repeat the same amount again and again. Post the code here if you don't have a manual to look it up.

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Tool; light blinks 9 times battery is charged pronto m51 tool light blinks 9 times chair won't move


Please download this manual and go to page 26:

http://search.aol.com/aol/search?&s_qt=sb&q=pronto+m51+error+code&tb_oid=07-01-2013&s_it=amonetizetest1-ie&tb_mrud=07-01-2013&tb_uuid=20130107163427450

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I have a pronto 2003 chair when charging batteries it we no move even if i charge is all nigh when i trurn joystick on it flashing one red llight an 5 green lighs what is the oproble


The error code means one of three things. First it could mean the batteries did not charge up at all. Next is unlikely ,but it also means too high of a charge voltage. The code also comes on when the charger is plugged in to charge and you turn the joystick on. The chair protects itself from driving off with the charger cable plugged into the wall outlet. One more possibility exists, the onboard charger could be bad and bad batteries. You need to have a trained electronic tech check this out.

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Check that the speed control on your joystick is set to high. If it is then you probably have a battery problem. Even with all the lights lit on the joystick you can have one battery of the two on the chair that is not charging fully. This will cause the M51 to creep and not work correctly

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How do i know when my invacare pronto m5 is fully charged?


With an M51, a full charge will be indicated by all three joystick indicator lights lit- red yellow green. The green far right LED is the full charge light. Also the charger has indicator lights that go from red/yellow to full green at full charge. Hope this helps

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1 Answer

Lights flashing


Are you sure that your batteries are not just able to hold a charge? Flashing lights and slow motion are typical indicators.

Aug 27, 2009 | Invacare Pronto M51 Power Wheelchair

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