Invacare TRx Power Positioning System manual Troubleshooting Guide

- 21 -

10.0 Troubleshooting Guide

TROUBLESHOOTING GUIDE

Symptom	Probable Cause	Solutions
Wheelchair power is ON, but	System tilted/ elevated beyond the	Return seating system to neutral (home)
	Drive Lockout (DLO) angle	position.
system does not Drive	Drive Motors not engaged	Engage Drive Motors
	Low batteries	Check/ Charge/ Replace Batteries
Seating System is not	Loose/ Faulty electrical connection	Check cable connections/ Check cable
functioning		ties (too tight/ too loose)
	Blown fuse	Inspect/ Replace fuse.
	Loose/ Faulty electrical connection	Check cable connections/ Check cable
		ties (too tight/ too loose)
Intermittent Seating System	Faulty Power Harness	Check/ Replace Power Harness
functions (day to day, during tilt,
during recline…)	Faulty Mercury Switch	Check/ Replace mercury switch
	Spongy Battery (fluctuating charge)	Check/ Replace Battery
Drive Lockout (DLO) is not	Relay box not programmed correctly	Check the relay box configuration guide
		and verify dip switch/ jumper settings.
functioning	Mercury Switch is not set-up properly	Adjust Mercury Switch.
DLO red indicator light does not	Faulty Mercury Switch	Check/ Replace mercury switch
light up	Mercury Switch is not set-up properly	Adjust Mercury Switch.
DLO red indicator light is ON,	Incorrect switch settings in relay box	Check dip switch/ jumper settings in relay
		box (refer to the Configuration Guide)
but no lockout	Incorrect wiring connections	Check connections.
	Loose/ faulty electrical connection	Check connections.
Limit switch not functioning	Faulty limit switch	Check/ Replace limit switch
properly
	Limit switch is not set-up properly	Adjust Limit Switch
	Faulty limit switch	Check/ Replace limit switch
System only operates in one	Limit switch is not set-up properly	Adjust Limit Switch.
direction
	Low Voltage/ Battery not charged	Test system power cable using Voltmeter/
		Charge batteries (Lazarus)
	Joystick not plugged in	Inspect cable connection
Joystick will not function	Joystick not turned on	Turn on power to the Joystick via the
		keypad
	Blown base fuse	Inspect/ Replace fuse
Tilt/Recline actuator keeps	Pinched switch harness	Adjust harness/ cable position to prevent
		pinching
running	Stuck switch	Inspect/ Repair / Replace switch
	Pivot point(s) sticking	1st - oil pivot(s)
System 'squeaks' during		2nd - lightly grease pivot(s) (AGS-Sil Glyde)
actuator functions	Slide channel sticking	lightly grease channels (eg. AGS-Sil Glyde)

*Note: For further assistance on these or any other issues, contact our Technical Service Department at

888-433-6818.

TRD0000, TRx Owner’s Manual- Rev. 5.0, January 20, 2005