Question about Ctm HS-2800 Power Wheelchair

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Dynamic wheelchair shark

Little yellow wrench is blinking and will not allow chair to opperate

Posted by Anonymous on

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Posted on Jan 02, 2017

wcdoc1953
  • 278 Answers

SOURCE: What can be used to clean the contacts on the

This power wheelchair uses a Shark joystick control made by Dynamic. The connecting cable plugs into the back of the joystick control and can be unplugged by pulling back on the lock ring of the connector. Spray electrical contact cleaner onto both the plug and the joystick cable receptacle.
Follow the cable down to the base and check for cuts, nick or pinches and repeat at the base connector. To get to the power module you need to remove the seat and cover for the base. The controller should have 5 connectors plugged into it. One is the power connector, one is the right motor, one is the left motor, one for the joystick plug, one for the charger. Remove these connectors one at a time, spray clean the contacts and plug back in. Inspect these connections on both sides and be certain the contacts are shiny.
A 6 bar flash indicates that there is a right park brake fault. Work the right brake release lever up and down several times and see if this clears the fault. Do the same for the left brake. If you have cleaned the right motor plug at the controller by disconnecting it you can use a digital voltmeter to test the brake. The 2 small wires to the plug are the brake wires and should read 40 to 60 ohms on your meter. If the brake solenoid reads open or shorted your brake is burnt out. The two easiest things to try are moving the brake levers and spray clean all the contacts. The test/replacement of these parts requires a qualified technician. Hope this helps.

Posted on Nov 22, 2010

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1 Answer

What does 3 blinking wrench lights mean?


It is indicating a left motor fault, which is not good news. This is usually from a motor overheating and burning out, usually from overloading the chair or from driving it on unstable terrain like mud, snow, wet grass or sand. If that is the case, there could be more damage to the electronics once you get the motor replaced too. Replacing the motor is a lot of work and very expensive, so you may want to try to find a replacement chair.

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With most wheelchair electronics a 7 flash means the joystick is bad. A 7 flash means "joystick is out of neutral".

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The yellow wrench is a diagnostic tool. How many times does it blink between pauses. Example might be 3 blinks then pause then 3 blinks then pause, over and over. Hoe many does your chair blink?

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Motors must be fully locked in gear to drive. Also many chairs require the joystick to be turned off before putting them in gear or turn chair off and back on after engaging the motors.

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Lock key keeps blinkinglights blink 9 times


Depending on the controller type being used you either have a controller solenoid brake fault (sticker on bottom of joystick will say "PG Drives" and have 9-bars flashing) or a communication error between the controller and joystick (Dynamic Controller flashing wrench).
Repair for PG Drive is to replace joystick/controller.
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Your version has a Dynamic Controls model controller and joystick.
Unplug the charger and engage the motor/brake lever so the chair is no longer in free-wheel mode (con't push by hand)
Turn the chair off, wait 5 seconds, turn the chair back.
If chair still does not run and your wrench is flashing you have a problem. Count the wrench flashes - the flash count indicates the error detected. 3, 4, 5, and 6 flashes indicate and error with the motors.
3=Left motor fault
4=Right motor fault
5=Left brake fault (may not be engaged)
6=Right brake fault (may not be engaged)
Any other fault code usually means the electronics or wiring is bad and not worth fixing.

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1 Answer

Battery indicator seems fine. Wrench symbol is lit. Chair won't respond to joystick control. Any suggestions? It worked when I put it away a few months ago and now, nothing.


The wrench symbol being lit indicates a problem. Does the wrench symbol blink? when you try to engage the joystick the brakes should try to engage and you would hear them click and the symbol will flash. The number of flashes telling you what is wrong. If the symbol is not flashing and staying on then that also a probem but you can't tell what it is. Either way the chair will have to be checked by a tech that has a programmer to plug into the chair and read the error codes to determine the problem. Check with your provider that sold you the chair to see if they can troubleshoot the chair for you or contact Invacare Tech Support @ 1-800-333-6900 and explain your problem. Sorry I can't give you a definite answer Hope this helps

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1 Answer

Rascal power chair runs backwards.


Check your controller program using PP1programmable for PG drive controller ( VSI,VR2,and Pilot+) or using Dynamic wizard for Dynamic Controller (DX,DL,Commando,SHARK, and RHINO)

Regards,
mas Didiet

Oct 26, 2008 | Health & Beauty

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