Wheelchairs With Elevate Systems - Invacare MK5 NX Service Manual

SECTION 3—TROUBLESHOOTING

Wheelchairs With Elevate Systems

SYMPTOM
Seating system not functioning
or working intermittently.
Wheelchair slows while driving. Elevating seat is elevated.
Wheelchair drives at full speed
when seat is elevated.
MK ™NX™Electronics
5
PROBABLE CAUSE
Low batteries.
Faulty electrical
connection.
Blown fuse.
Seat has been driven
under a heavy load for an
extended period of time.
Open Motor connection/
Motor locks disengaged.
The elevating seat is
equipped with a speed
reduction safety
mechanism. While the
seat is in an elevated
position, the safety
feature slows the speed
of the wheelchair by 80%.
Faulty electrical
connection.
Malfunctioning seating
system controller.
12
SOLUTIONS
Charge batteries. Refer to the seating system
Owner's Manual.
Check all connections.
Replace wiring harness. Refer to the seating system
Owner's Manual.
Allow time for the electronics to cool down (Light
Duty Use). Leave power on, and do not activate
powered seating functions for at least 3 minutes.
Check all motor connectors.
Make sure motor locks are engaged.
Return the seat to its lowest position. Refer to the
seating system Owner's Manual.
Check all connectors.
Check for error codes. Refer to Performance
Adjustments on page 21 for the correct perfor-
mance adjustment menu descriptions. Replace seat-
ing system controller, if necessary. Contact
Invacare.
Part No 1110532