The joystick on my TDX wont make the chair move and a key insignia flashes. Battery is fully charged and the other controls ( chair tilt and footplate lifts all work OK. What can the possible problems be ?

Not a specific charge light but the battery level lights should blink. If you have no lights that turn on on the joystick when you turn the joystick on then the chair is not charging, Do any lights turn on when you plug the charger into the chair then into the wall?

you may have a current rollback problem you will need to charge the Chair for 14hrs. with the Joystick on! This will reset the circuit. Charge with the joystick on! It is okay it won't hurt a thing, in fact from now on always charge with the joystick on.

I’m happy to assist further over the phone at https://www.6ya.com/expert/bill_bcbb89783b08c489

Hello, Invacare does not have Reset Buttons on the power for the batteries. They only use fuses. Now if the joystick has a display and it says to press a reset button and it did not used to say that then the programming has be lost or changed by the rain or battery power. You will need to have someone with an Invacare Programmer reprogram the chair or a reset switch can be purchased that will plug into the joystick and allow you to get pass the Press Reset command on the joystick.

It sounds like the joystick has defaulted back to some other programming. A Reset Switch is a switch that plugs into one of the Mono ports on the joystick. You will need to either have the chair reprogrammed by a service/dealer of power chairs or purchase a reset switch (sometimes called a momentary switch) to plug in to the joystick. The Reset switch has a long wire with the proper plug on it. There are many different types and prices for one of those so getting the chair reprogrammed may be easier.

Press and hold power button til beep then push joystick forward and hold joystick til beep then pull the joystick back and hold joystick til beeps. turn power off then on. should be unlocked now

Time to replace battery - not taking a charge properly.

If chair has a tilt, recline or lift seat on it it may be going into lock-out mode on its own due to a limit switch fault. If you don't have any of these options then I suggest you remove the joystick, controller and any wire harness between the two and send them to a shop like mine for repair.
The usual lock out light chase is from left to right - not right to left so this is suspect of a different issue.

If it just started to do this it could be no more than a losse connection from your joystick cable . Go ahead and follow that cable from your joystick all the way down to the back of your chair make sure everything is connected.

If that checks out ok it could be your on off button .Thats on your joystick it may be ''sticking'' if you have to press down really hard to turn on the chair .Than yes this is the problem .you can go to Pridemobility.com I do think they are selling just the "Three key pad '' for your joystick. so you dont have to buy a new joystick.

If that checks out ok ,It could be your batterys are not fully charged or charging ,whens the last time you charged it,did it charge fully .That could cause your problem too

well hope i was helpful ,good luck

I am making some assumptions based on your description of the problem:
1: You have a Jazzy 1113 with tilt.
2. You have batteries that are fully charged as indicated by the battery display
3. Your chair is not in freewheel, that is the brakes are engaged with the levers in the correct position.
4. The motors are not turning.
5.You do not state the type of tilt system but I am assuming it is either true balance tilt by Pride or Motion Concepts tilt.
6.You have no flash error code on the battery display.
7. You do have a flash error on the joystick.

My initial response based on these assumptions is that your chair is in drive lock out and the electronics are inhibited because of the following reasons:
You have a bad switch that indicates to the electronics that the chair is in tilt or more than 20 degrees of tilt. You have a bad inhibit harness. You have a bad end of travel switch on the actuator. The list is long depending on the system.
Check all the wiring and switches associated with the tilt system for broken/disconnected wiring.
Get back to me with exact specs of the system including type of tilt system and the serial number of the chair so I can research the configuration and give you exact and not general answers. I hope we are off to a good start.

The chair will not move if the charger is plugged in. The flashes are normal with the charger plugged into the chair. The lights on the charger mean that the batteries have been fully charged. Red and yellow lights mean charging. After you unplug the charger from the chair (if off-baord charger, turn charger off or unplug from the wall) then unplug from joystick. after plug is removed from joystick press the on button and all the battery lights should be lit and when you move the joystick forward you will hear the electric bake release and the chair should move forward etc Hope this helps