Question about Invacare Supply Group Invacare Pronto M91 Electric Wheelchair

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How to recharge but I get a flashing red light on transformer in battery box. this is a Invacare Pronto M91 Electric Wheelchair

Has not been used or charged for 2 months

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gnsdance97

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The red light on the transformer/Charger means the charger is bad. Sometimes it can also be battery harness wiring. Most often it is the charger that needs replaced.

Posted on Jan 02, 2015

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wcdoc1953

wcdoc1953

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SOURCE: Had the Pronto M91 invacare wheelchair in the Push

You definitely need new batteries. After that amount of time the batteries go bad and the plates inside become sulfated. They are only good as boat anchors now.
It is a easy do it your self repair. There are 2, Group 22 batteries in this model. You want to get deep cycle sealed lead acid, preferably AGM (advanced glass matt) group 22 batteries.
Flip the seating system back by releasing the lever under the front of the seat.Make sure you do not pinch the joystick wiring at the back when you do this.
Remove the black plastic cover.
The batteries will be secured by a strap which you should unbuckle.
Disconnect the plugs to the batteries and note how they are run, oriented and connected.
Pull out the batteries, one at a time, from the base.
Make the wiring connections to the battery , put the batteries back in the chair, plug everything in and you are set to go. Hope this helps.

Posted on Feb 13, 2011

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bugoy31

bonifacio gomez

  • 1238 Answers

SOURCE: Invacare Pronto Sure Step M91.

Good day!!!!


Please try to reconnect all connectors on the board...

after that try to test the machine...if persist,please check the voltage of your battery if it is 12vdc it should have at least 11vdc and if 24vdc it should have 23vdc...if the battery is lower try to replace it..

If the battery is good the problem is on the main control board..

if that so you need to replace it..please contact your manufacturer or dealer to buy the parts you needed..

Thanks for using fixya..

Have a nice day!!!

Posted on Aug 12, 2011

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1 Answer

Pronto m91


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.

Jul 08, 2014 | Invacare Supply Group Invacare Pronto M91...

1 Answer

What does 7 times flashing mean is wrong on pronto m91


Hello,

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

May 28, 2014 | Electric Mobility Invacare Pronto M41...

1 Answer

I have a Pronto M91. When I push the joy stick the lights turn off and the first two red lights blink. I check all the connections and the wheelchair will not move. I would be thankful for any help.


You have low batteries and need charging if you been charging and still get the red lights then the batteries need to be replaced and have the charger checked for correct output. If you have a voltmeter you can check the charger by plugging the on-board charger into the wall set the voltmeter to 200 volts dc and plug the leads into the two outter holes of the charger port located under the front of the joystick. with the charger pugged in you should be reading 27+volts if you aren't getting any reading or the reading is lower than 25 volts then replace the charger or get an offboard charger and try charging the batteries via the joystick charger port Hope this helps

Mar 16, 2011 | Invacare Supply Group Invacare Pronto M91...

1 Answer

Batterys charged. I turn switch on. all the lights come on. Joy stick doesn't do anything. Pronto m91 ([email protected])


truffles e-mail me at [email protected]. I need to know if you are getting any flashing lights on your joystick and are you hearing the brakes click when you move the joystick. Thanks

Oct 18, 2010 | Invacare Supply Group Invacare Pronto M91...

3 Answers

One red light three green flash when turned on


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.

May 15, 2010 | Invacare Supply Group Invacare Pronto M91...

1 Answer

Change Batteries in Pronto M91 with swivel seat.


Turned out to be a "doh!" moment. Use the lever on the side of the seat to permit swivel. Unplug Controls connector. Lift seat off unit. Remove battery compartment cover by loosening 2 Philips-head screws on the Charger cover at the rear. Disconnect cable to Electronic Controller at front of front battery. Disconnect the Red and Black battery connectors, the ones that join the 2 batteries. Lift out batteries. Transfer battery connections to new batteries. Reverse the above process to reassemble.
Solved this without any help from outsiders, including FixYa, who wanted to charge me for the solution.

Jun 12, 2009 | Invacare Supply Group Invacare Pronto M91...

1 Answer

No power to the controles


sounds like bad batteries or blown fuse which is loacated on postive post of each battery.

Mar 27, 2009 | Invacare Supply Group Invacare Pronto M91...

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