SECTION 3—TROUBLESHOOTING

SECTION 3—TROUBLESHOOTING

All Power Wheelchairs

SYMPTOM

PROBABLE CAUSE

SOLUTIONS

 

 

 

Error Code E03 or E04,

Motor lock levers disengaged.

Engage motor lock levers. Refer to the wheelchair

3 or 4 flashes of joystick

 

Owner’s Manual for more information.

LEDs.

 

 

Bad motor connection.

Check all motor connections.

 

 

 

 

 

 

Ohm out motors. Check brushes and replace if

 

 

necessary. Replace motors if high reading is present.

 

 

Normal reading is 0.2-5 Ohms (4 Pole motors) or

 

 

0.5-5 Ohms (2 Pole motors). Refer to wheelchair

 

 

Service Manual.

 

 

 

 

Bad brake coil

Ohm out brake connection. Normal reading is 40-

 

 

80 Ohms.

 

 

 

Error Code E02, 2 flashes

Batteries need to be charged.

Charge batteries. Refer to the wheelchair Owner’s

of joystick LEDs.

 

Manual for charging instructions.

 

 

 

Joystick erratic or does

Damaged motor coupling.

Contact Dealer/Invacare for Service.

not respond as desired.

 

 

Electrical malfunction.

Contact Dealer/Invacare for Service.

 

 

 

 

 

Controller programmed

Contact Dealer/Invacare to have controller

 

improperly.

reprogrammed.

 

 

 

Wheelchair veers to the

Joystick needs to be calibrated.

Calibrate joystick with programmer. If this does not

left or right when driving

 

work, replace joystick. Refer to Joystick Throw on

on level surface.

 

page 33 for calibration information.

 

 

 

No LED’s on joystick.

Joystick connection to

Check all joystick connections. Refer to wheelchair

 

controller unplugged or

Owner’s Manual. If damage is found, replace

 

damaged.

joystick.

 

 

 

Corroded wiring or

Possible water, salt, or urine

Replace wiring harness. Refer to wheelchair

connections.

damage.

Owner’s Manual.

 

 

 

Wheelchair does not

Poor battery terminal

Have clean terminals. Refer to wheelchair Owner’s

respond to commands.

connection.

Manual.

 

 

 

 

Bad joystick connection.

Check all joystick connections. Refer to wheelchair

 

 

Owner’s Manual.

 

 

 

 

Bad wiring harness connection

Replace wiring harness. Refer to wheelchair

 

or blown fuse.

Owner’s Manual.

 

 

 

 

Battery charger connected to

Unplug battery charger.

 

joystick.

 

 

 

 

Power indicator off - even

Electrical malfunction.

Contact Invacare.

after recharging.

 

 

 

 

 

Part No 1110532

9

MK5™NX™Electronics

Page 9
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Invacare 1110532 service manual Troubleshooting, All Power Wheelchairs, Symptom Probable Cause Solutions

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