Problems with Invacare G90A Control

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Problems with Invacare G90A Control

Postby Glitterfairy » 12 Nov 2018, 02:49

I'm having problems with my powerchair's control. I have now had the chair, a TDXSP2NB, 2 years and 5 months. It and its control, a G90A joystick, have worked well. It's used by my carers to control the chair. Indoor use only as access issues prevent us from using it outside.

This weekend (10 and 11th November), we noticed that the 2 red LEDs flash constantly as well as the green status/ lock icon, too.

From looking in the chair's manual, I'm not sure what this indicates. My carer charges the chair religiously every single night. The status light and the red LEDs flash as this video I filmed shows: https://m.youtube.com/watch?v=2L_cJGi9_is

The chair has been well looked after, as has the control, all the time I have had it. This is the first control (ie the control we bought when the chair was purchased as brand new).
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Re: Problems with Invacare G90A Control

Postby Cal » 12 Nov 2018, 16:59

Sorry to hear you are having troubles.

I couldn't count the number of flashes in your video as the video is too short. However, I think that because you have a flash code on the status light, and the battery gauge, it could indicate a low battery warning (the manual says that a Low Capacity Warning usually coincides with a Battery Low Warning - so it seems feasible).

Here's the link to the DX-REMG90A installation manual:

https://dynamiccontrols.com/sites/defau ... 8-r3-M.pdf

It could just be that your batteries are past their best and need replacing.

I hope you can get it resolved soon.
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Re: Problems with Invacare G90A Control

Postby woodygb » 12 Nov 2018, 17:41

As Cal say's count the GREEN Key flashes ...they will come in a group ...e.g. 7 flashes ... PAUSE ... then a repeat of 7 flashes ...etc etc ...
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Re: Problems with Invacare G90A Control

Postby Burgerman » 12 Nov 2018, 18:37

Thats the shortest vid ever made!
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Re: Problems with Invacare G90A Control

Postby Glitterfairy » 25 Nov 2018, 00:42

Hi all,

Here's another video, longer but is still happening from today after the control having been OK for the past few days. Maybe it was just using up the last bit of power in the battery? In this video, I'm explaining to the Invacare powerchair specialist what's happening.

https://m.youtube.com/watch?v=6MPUvk7uL4g

Same when pressing the blue button (speed profile control) and also the red button which is the electric functions button tilt, recline elevate & electric leg rest). White button- power on/off.

Any more ideas what might be up from this longer video? Sorry lighting is not great.
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Re: Problems with Invacare G90A Control

Postby Burgerman » 25 Nov 2018, 00:50

Looks to me like the battery is totally dead. Charge overnight, or 16 hours if poss, EVERY use.

If you do, and your carer actually plugs it into the wall, or makes sure theres no blown fuse etc, so it is ACTUALLY charging, then replace batteries.
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Re: Problems with Invacare G90A Control

Postby woodygb » 25 Nov 2018, 00:56

10 flashes of the green led.

CANH Fault(See Limp Mode below)


page 35 of pdf

https://dynamiccontrols.com/sites/defau ... 8-r3-M.pdf
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Re: Problems with Invacare G90A Control

Postby LROBBINS » 25 Nov 2018, 09:20

A CANH fault usually means a bad or badly connected DX-BUS cable. I don't know how many modules your chair has, but if it's just Joystick & PowerModule there's just one cable; more modules, more cables. First check that they are fully plugged in - the plastic latches will not hold if the cable is pulled, so they sometimes do come loose. If that doesn't fix it, unplug the cable and check that contacts are clean and plug it back in. If that doesn't fix it, try jiggling the cable to see if that gives a temporary "cure" - then replace the cable even if it does. The CAN boards inside the modules are really reliable, solid bits of electronics.
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Re: Problems with Invacare G90A Control

Postby woodygb » 25 Nov 2018, 09:53

@Lenny.... Is it in the realms of possibility that a bad cable could also give a false ( low ) battery reading?
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Re: Problems with Invacare G90A Control

Postby LROBBINS » 25 Nov 2018, 10:03

Woody,
Maybe. The cable has 4 wires (CANH, CANL, B+ and B-) and it's the only thing connecting the joystick to the rest of the chair - even the Joystick's charging socket is connected to those wires. The Power Module also has the heavy wires from the battery. "Maybe" because I don't know whether battery voltage is monitored in the PM or in the Remote (though I suspect it's the Remote). If it's monitored in the remote, the "maybe" changes to "yes".
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Re: Problems with Invacare G90A Control

Postby Burgerman » 25 Nov 2018, 11:04

Do you think a dead battery may give all kinds of errors? I might be sure its charged a little before going further. That battery meter is reading dead.
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Re: Problems with Invacare G90A Control

Postby LROBBINS » 25 Nov 2018, 12:07

If either one of the two battery leads in the joystick to PM cable is iffy, connecting the charger to the joystick won't do anything; may not even see that there's a battery there if the connection's really bad.
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Re: Problems with Invacare G90A Control

Postby Glitterfairy » 25 Nov 2018, 22:36

We charge it every night and the charger shows a full charge. So might the control need changing? Will get my carer to check the cables and let you know. Emailed a technician I saw in the past who seems to think it may be the battery but is not sure.
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Re: Problems with Invacare G90A Control

Postby Glitterfairy » 26 Nov 2018, 14:53

SOLVED- Update- the chair wasn't taking the charges despite several long charges over the last few days. My partner and carer had to take parts of the chair apart to find the loose cable but once found it was connected. Tried a charge but no luck. Luckily had recently bought same size batteries for my old chair and so he just swapped them to my TDX. Fine now. Thanks for all your help.
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Re: Problems with Invacare G90A Control

Postby Burgerman » 26 Nov 2018, 15:16

Your old batteries are likely pretty much junk after 2 years plus anyway.
But, connect in parallel, then connect to a cars battery and start car. Run for 10 mins.
That will pull up the voltage to a level that allows a charger to start to charge them.

Now connect to a 12v charger. One at a time, till fully charged. If after a week, they read over 12.9V, Put them somewhere safe as a backup set. Top up every 3 months. If after a charge, and 7 days disconnected they read less than 12.9V, BIN!
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Re: Problems with Invacare G90A Control

Postby Cal » 26 Nov 2018, 16:32

Good stuff - glad you got it resolved :)
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