McConnel ROBOCUT2 RC40 - 7.1.2 Troubleshooting Control Unit LE70

69
McCONNEL
Malfunction
Cause
Solution
The starter motor
does not work or
rotates too slowly
(the motor can be
turned by hand)
The battery needs to be recharged
Check the electrolyte / recharge the battery
Bad cable connection to the battery terminals
Clean the terminals, re-tighten
Start-up relay faulty
Contact McConnel’s support service
Starter motor faulty
The motor
cannot be
turned by hand
Internal parts of the motor seized or damaged
White or black exhaust gases
Black exhaust gases
Engine overloaded
Reduce the load
Air filter elements clogged
Clean / replace the elements
Unsuitable type of diesel
Replace with a suitable type of diesel
Injection faulty
Contact McConnel’s support service
Excessive intake / discharge valve clearance
EGR valve faulty
White exhaust
gases
Unsuitable type of diesel
Replace with the recommended type of diesel
Injection faulty
Contact McConnel’s support service
Fuel injection timing delay
Engine oil
If the fault or the reason for it is not indicated in the list of faults shown, contact McConnel in order for repairs to be carried out.
7.1.2 - TROUBLESHOOTING CONTROL UNIT LE70
Error
Cause
Solution
10
Longitudinal machine angle excessive with
respect to the ground
Decrease the inclination of the machine
11
Transverse machine angle excessive with
respect to the ground
Decrease the inclination of the machine
12
Water temperature fairly high
Allow the engine to cool down
13
Water temperature high, stop the stump grinder for
safety
Allow the engine to cool down
14
Water temperature very high, switch off the engine for
safety
Allow the engine to cool down
40
LE70 1 safety relay contact error
Check the control unit power supplies, save the parameters.
If the error persists, replace the control unit
41
LE70 2 safety relay contact error
Check the control unit power supplies, save the parameters.
If the error persists, replace the control unit
42
LE70 3 safety relay contact error
Check the control unit power supplies, save the parameters.
If the error persists, replace the control unit
43
LE70 4 safety relay contact error
Check the control unit power supplies, save the parameters.
If the error persists, replace the control unit
44
Control unit RTC error
Save the parameters. If the error persists, replace the
control unit
50
LE70 CRC Error
Reprogram the control unit, save the parameters. If the
error persists, replace the control unit
51
LE70 CRC Error
Reprogram the control unit, save the parameters. If the
error persists, replace the control unit
52
LE70 CRC Error
Reprogram the control unit, save the parameters. If the
error persists, replace the control unit
53
LE70 CRC Error
Reprogram the control unit, save the parameters. If the
error persists, replace the control unit
55
No power to the LE70
Make sure there is power on pins A33 and B33
If the fault or the reason for it is not indicated in the list of faults shown, contact McConnel in order for repairs to be carried out.