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SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
Part No 1114842 23 2G Tarsys®Powered Seating System
Error Code:
E28 - MPJ joystick
or
5 flashes - DPJ™ and
SPJ™-80 joysticks
System tilted or reclined
beyond drive lock-out
angle (20°).
Charger is plugged into
wheelchair.
Bad potentiometers or
out of calibration.
Return to neutral position (upright). Refer to Operating
Powered Seating Systems on page 127.
Unplug charger.
Recalibrate potentiometers or replace. Refer to the MK
5
EX Electronics Service manual that is listed in Reference
Documents on page 2, Removing/Installing the Tilt
Potentiometer on page 150, or Removing/Installing the
Recline Potentiometer on page 155.
Programmer does not
work or gives
“communication error”.
System tilted or reclined
beyond drive lock-out
angle (20°).
Return to neutral position (upright). Refer to Operating
Powered Seating Systems on page 127.
Switch response
incorrect.
Programming error or
bad switch.
Use the programmer to verify controller programming.
Save the proper standard program to reset switch
functions.
Drive lockout does not
engage.
Programming error.
Bad potentiometers or
out of calibration.
Check drive lockout settings using the programmer.
Recalibrate potentiometers or replace. Refer to the MK
5
EX Electronics Service manual that is listed in Reference
Documents on page 2, Removing/Installing the Tilt
Potentiometer on page 150, or Removing/Installing the
Recline Potentiometer on page 155.
Slow motor speeds. Low battery voltage or
programming speed set
too low.
Recharge batteries.
Check seating system controller performance adjustment
settings for actuator speed and acceleration using
programmer.
Motor speed too fast. Programming error. Check seating system controller performance adjustment
settings for speed using programmer.
Seating system functions
respond to switch
commands, but not to
driver control.
Programming error.
Incorrect/malfunctioning
driver control.
Check the performance adjustment menu for the base
and make sure that the tilt/recline adjustment is turned
on in all available drives.
Replace drive control.
Seating system function
will only operate in one
direction.
Bad potentiometers or
out of calibration.
Current Rollback.
Check for physical damage to potentiometers and wiring
and replace if necessary.
Recalibrate potentiometers.
Leave power on, and DO NOT activate seating functions
for at least 3 minutes. Call Invacare Technical Services.
Motor runs then loses
power, then runs again.
Heavy load sensed by
seating system controller.
Leave power on, and DO NOT activate seating functions
for at least 3 minutes. Call Invacare Technical Services.
SYMPTOM PROBABLE CAUSE SOLUTIONS