Yes there is a short either in the motors or joystick u would be better off contacting the dealer and have a tech run his programmer on it and tell u what is wrong, will save u money if u can take that power chair to the dealers shop
SOURCE: need to remove the bad batteries Jet 3 power chair
Hello Donald ,
You may have solved this problem by now ,but just in case you have not, here goes.
Make sure the chair is turned off and engauged in the drive mode meaning not in the free wheeling mode. This way it will not roll around on you during the battery change out.
Go to the rear of the chair and slightly turn the two black plastic lock pins,one on each side they actually lock the small )) shaped cover in place. Turn these with your fingers or you can also insert a dime in the slot on top of each pin to turn them . You will be able to tell when they have unlocked as the )) shaped cover will be loose. Lift the cover up and under it you will find the battery connector, unplug it and leave the cover off for now.
Next ,move to the front of the chair and just to the rear of the footplate you will find a locking pin that runs through the lower rear bar of the footplate as well as the chair frame itself . Pull this pin completely out. Once done you should be able to pull the entire footplate assembly out torward you, Black plastic front cover included. Once you have it pulled outward lift it upward and it should lift completely off the chair. This done , you should actually be looking at the front battery which is sitting in a black plastic tray. Gently but with a firm grip grab the tray anyplace you can and slowy begin to slide it out from under the chair torward you taking care not to tangle the battery connector at the rear with any other wiring on its way out. Once you have the tray slid out into the open ,you will be looking at both batteries after which you will need to unhook the straps that secure the Batteries to the tray after which you will need grab your wrenches and remove the battery harness itself from each battery. You may want to do just one battery at a time this way you'll have less wiring to keep track of when wiring in the new Batteries. The Batteries in your Jet 3 are a size known as U-1 deep cycle sealed maint. free batts, You can use either Gel Cell or seale3d LA replacements . Though they are much cheaper, you cannot use lawn tractor batteries. Though they look the same the internal technology between medical powered mobility batteries and tractor batteries are entirely different. The latter would only run your chair for maybe a half hour or so before needing charge.
Take great care to make sure your wiring hookups are correct and that you position the rear connector plug to the rear of the tray. This way you will be able to locate it easier once you have slid the tray back in under the chair and it is time to go to the rear of the chair and reconnect that plug. As for everything else ,reattach it in reverse of the way you removed it including remembering to slide the lockpin back into the front footplate frame. Give a tug on the footplate when done to make sure it is locked and secure.
In closing I offer this valuable advice : When working with any of these batteries, always were safety glasses or goggle and gloves (terminals are lead). I also advise removal of metal rings ,watches, bracelets etc that could create a short when reaching in and around the battery terminal. Take great care with your tools and wrenches in making sure you keep and eye on both ends of the tools at all times. This way you will not accidentally cross the posts of the battery. Take your time ,use proper safety technique and you'll do fine. The following is Pride Mobility's step by step for battery change out and is basically the same as I have sent . Can never have to much info but can always find yourself with not enough. Take Care
To replace the batteries:
1. Turn off the power to the controller.
2. Make sure that the power chair is in drive mode. See III. "Your Power Chair."
3. Turn the rear shroud fasteners one-quarter turn in any direction. See figure 6.
4. Remove the rear shroud.
5. Unplug the battery connector. See figure 26.
6. Remove the retaining pin from the foot platform and lift the platform up and away from the power base. See figure 19.
7. Slide the battery tray forward.
8. Unfasten the reusable strap around the front battery.
9. Disconnect the wiring harness from the front battery.
10. Remove the front battery.
11. Unfasten the reusable strap around the rear battery.
12. Disconnect the wiring harness from the rear battery.
13. Remove the rear battery.
14. Place a new rear battery on the battery tray. Make sure that the terminals are facing forward.
15. Fasten the reusable strap around the rear battery.
16. Connect the wiring harnesses to the rear battery.
SOURCE: Jet 3 power chair power lights just flash, no sequence of flashes
hold joystick back, press on button, move joystick forward, then let go.
SOURCE: need a wiring diagram for jet 3 power chair
Look here: http://www.pridemobility.com/pdf/Owners_Manuals/US_Jazzy/US_Jet_3_ultra_om.pdf
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Took back to dealer. They have replaced wiring harness, controller, motors, battery charger and batteries. I still can't go very far before battery meter shows going down 2 bars. Any suggestions?
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