Troubleshooting Guide; Main Controller Error Codes - Clarke Clean Track® L24 56317170 Service Manual

The secondary function of the main control board is to detect any system failures and display an error code on the
display LED panel, or store it in the main control board's recall memory mode. The error code(s) are used to help the
service person determine the fault and to quickly guide in repairing a specific system malfunction.
Note: See the Troubleshooting Guide below for further information.
An additional special feature of the main control board is to change program settings for a set of specific machine
functions. See the Main Control Programming Options section in this manual for further information.

Troubleshooting Guide

Any error codes detected by main control board will be displayed on the LED display panel as they occur. If more than
one error exists, the display will sequence through the error codes at one-second intervals. The error display will show
on the display LED panel as a mechanical wrench symbol
would be a drive system fault. When troubleshooting any "Fault Description" noted with a double asterisk (**) follow the
instructions for entering the Service Test Mode. See the Service Test Mode section in this manual.

Main Controller Error Codes

Display
Fault Description
Code
03 Drive system fault.
Scrub deck lift actuator overload.
• Normal current load - 1 to 2.5
Amps.
04
• Max. current load 6 Amps.
• Max. current no load - 1.4 Amps.
Solution pump M1 overload.
• Normal current load .8-1.8 Amps.
05
• Max. current load 3.2 Amps.
Over will cause 05 pump motor
overload.
Scrub motor overload
Note: See Selecting the Scrub
06 Pressure Current Limits for detail
load current values for the different
scrub pressure limit settings.
Vacuum motor overload. Normal
07 current load 24V 23-25 Amps for
each vacuum motor.
08 Solution solenoid coil L1 overload.
09 Solution solenoid coil L2 overload.
followed by a two-digit code. For example:
Troubleshooting Action
1. Check for a tripped drive motor circuit breaker (30 amp). Investigate reason
for possible mechanical overload. Examples: Debris wrapped around the drive
wheels, defective differential and prolonged ramp climbing.
2. Observe the green flashing wand indicator light (on operator panel), then see
Curtis Controller Diagnostics and Status LED Fault Codes (Table 1) to further
troubleshoot the drive system.
1. Check for binding or frozen brush lift linkage and excessive weight on brush deck.
2. Check for short circuits in actuator motor and wiring. Repair or replace.* To
test, disconnect the motor plug and attach the actuator test cord (56407502) and
perform an amp draw test. Compare readings to the current loads listed on the
left.
1. Check for short circuits in the wiring and pump motor.
2. Disconnect the pump motor and run the machine to see if the wiring is shorted.
3. Check the pump motor to see if it is bad.
1. Check for binding in rotation of brushes or incorrect brush Scrub Pressure lift
actuator operation.
2. Check the negative supply cable at the brush motor for a wiring problem or
incorrect modifications.
3. Check for an open in the small WHT/GRA current sense wire.
4. Check for short circuit* in brush motor or wiring.
5. Inspect scrub brush drive bearings and drive belts for excessive wear.
1. Check for debris in the vacuum motors.
2. Worn carbon brushes.
3. Defective motor bearings.
4. Check for short circuit* in vacuum motors or wiring. Repair or replace.
5. Check for an open in the small ORG current sense wire.
1. Check for wiring problems (short) on the coil circuit and repair wiring.
2. Check the coil resistance. The nominal resistance is 53 ohms for White Rogers
and 100 ohms for Ametek. If resistance is below 45 Ohms, replace the solenoid.
1. Check for wiring problems (short) on the coil circuit and repair wiring.
2. Check the coil resistance. The nominal resistance is 53 ohms for White Rogers
and 100 ohms for Ametek. If resistance is below 45 Ohms, replace the solenoid.
Form No. 56043161 - Clean Track
03
L24 - 71
®