TQ-Systems TQ-HPR50 Service Manual page 32

Troubleshooting
Error code
ERR 4C8 DRV SW
ERR 4C9 DRV SW
ERR 4CA DRV SW
ERR 4CB DRV SW
WRN 601 SPD SENS
WRN 602 DRV HOT
WRN 603 DRV
COMM
ERR 5401 DRV CONN Communication error between
ERR 5402 DISP BTN
ERR 5403 DISP BTN
WRN 5404 DISP BTN
32
Cause
General software error
Speed sensor
problem
Drive unit overtemperature
CAN bus communication prob-
lem
drive unit and display
Remote button pressed when
switching on
Pushing aid user error
Remedy
Outdated motor firmware
1. Reboot the system
2. Please perform a software update
Missing or defective speed sensor.
1. Ensure permissible clearance of the spoke mag-
net to the speed sensor
2. Reboot the system
3. Replace speed sensor
Permissible operating temperature exceeded.
Avoid extraordinary cycling situation to the
extent possible.
1. Switch off the drive to allow it to cool down if
necessary.
2. Reboot the system
3. In case of outdated firmware, please perform a
software update
4. Replace motor if error occurs during start
Soiling or water in plug connectors.
Connection problems in the wiring harness.
Electronics fault in one of the components.
1. Check charging port for soiling
2. Reboot the system
3. In case of outdated firmware, please perform a
software update
4. Check peripheral components for wire breaks,
along with cable and plug connections
Connection problem between motor and display.
Update not performed properly.
Electronics fault in display and/or motor.
1. Reboot the system
2. In case of outdated firmware or if an update was
not properly carried out, please perform a soft-
ware update
3. Check peripheral components for wire breaks,
along with cable and plug connections
4. Replace display
5. Replace motor
1. Do not hold down remote button during startup
2. Check jammed keys for dirt and clean if necessary
3. Replace remote
4. Replace display
Instruct users in the proper use of pushing aid
!
1. Activate pushing aid by pressing the up key
(Walk) of the remote until Walk appears on the
display
2. Then immediately release the button and press it
again to use pushing aid