Troubleshooting; All Joysticks - Invacare Formula Owner's Operator And Maintenance Manual

Inspect foam handgrips for damage. If damaged, have them replaced by a qualified
technician.
Check that all labels are present and legible. Replace if necessary.
Inspect electrical components for signs of corrosion. Replace if corroded or damaged.
Check that spreader bar mounting fasteners are tight.
Check limit switch position.
Make sure seating systems with the recline function have the retaining pin in place at
the top of each back cane.
Make sure all systems, except Elevate Only, have the retaining pin in place at the back
of each seat rail.
Check that back cane mounting fasteners and back mounting fasteners are tight.
Inspect electrical components for signs of corrosion. Replace if corroded or damaged.

Troubleshooting

NOTE: For additional troubleshooting information and explanation of error codes, refer to the
wheelchair base owner's manual and the individual Electronics Manual supplied with each
wheelchair.

All Joysticks

SYMPTOM
Wheelchair Power On
but does not drive.
Seating system not
functioning or working
intermittently.
Part No 1143155
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
PROBABLE CAUSE
System tilted or reclined
beyond drive lock-out
angle (20°).
Motor lock levers are
disengaged.
Low batteries.
Faulty electrical
connection.
Seat has been driven
under a heavy load for an
extended period of time.
SOLUTIONS
Return to neutral position (upright and completely
lowered). Refer to Operating Powered Seating Systems
on page 27.
Contact Invacare/Dealer for service if this does not solve
the problem.
Engage motor lock levers. See wheelchair base owner's
manual.
Charge batteries.
Check all connections.
Allow time for the electronics to cool down (Light Duty
Use).
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Formula™CG Powered Seating