Invacare Formula Powered Seating Owner's Operator And Maintenance Manual page 22

SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM
Joystick erratic or does not respond
as desired.
Wheelchair does not respond to
commands.
Power indicator off - even after
recharging.
TILT WARNING displays and the
wheelchair will not drive.
MAX BACK ANGLE displays.
SPM Inhibited displays and the
wheelchair does not drive.
SPM Slow Down is displayed and
the wheelchair drives slowly.
Formula™ Powered Seating
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PROBABLE CAUSE
Damaged motor coupling.
Electrical malfunction.
Controller programmed
improperly.
Poor battery terminal
connection.
Electrical malfunction.
The system is tilted or reclined
beyond drive lock-out angle of
20° (Error code W01).
The wheelchair back has
reached the maximum
programmed back angle on a
wheelchair with a TIAM, RIAM
or TRAM (Error code W02).
The system is tilted or reclined
beyond the drive lock-out angle
of 20° (Error code W03).
The elevating seat is elevated
(Error code W04).
22
SOLUTIONS
Contact Dealer/Invacare for Service.
Contact Dealer/Invacare for Service.
Contact Dealer/Invacare to have
controller reprogrammed.
Have terminals cleaned.
Contact Dealer/Invacare for Service.
Return the system to upright position.
The wheelchair back will not go past
the programmed maximum back angle.
This is normal behavior.
Return the system to the upright
position.
Return elevating seat to the lowest
position to drive at full speed.
Part No 1122170