LORCH P-Basic, Service Manual

Page: 64 / 68

Troubleshooting
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02.20 909.2710.1-06
9.15 Malfunction Codes
code designation reason removal
E 01 Thermal overload thermal sensor of power unit meas-
ures a too high temperature
let machine cool down in standby (*1)
see page 48 for details
E 02 Mains overvoltage mains voltage too high
internal 24V supply > 36V
check mains voltage and control
transformer (*2)
see page 49 for details
E 03 Secondary overcurrent welding current is too high (>120%) check current sensor and its wiring
see page 50 for details
E 04 Stop/ Peripherals error
sub code -01
PE protection has detected a current
>15A flowing via the protective earth
wire of the mains cable
– check if the welding wire has con-
tact to metal parts of the housing or
parts with PE potential (wire spool
installation)
–
check X26 on MAPRO board
– switch the machine off and on again
to reset the error message
see page 51 for details
Stop/ Peripherals error
sub code -02
the gas pressure switch (optional
feature) has opened: not enough gas
pressure left
–
check / replace the gas bottle
– check X26 on MAPRO board
–
switch the machine off and on again
to reset the error message
see page 51 for details
Stop/ Peripherals error
sub code -03
the gas flow rate is too low (only pos-
sible with installed flow sensor)
–
check gas supply
–
check min.gas flow setting in
customize menu
E 05 Cooling system error flowrate of the cooling liquid is too
low (< 0.3 l/min)
– pump is not working
–
check level of cooling liquid and
flowrate (*3)
–
check connectors of flow-meter
– check fuse SI7 (4A) on MAPRO
–
check all hoses incl. torch and inter-
pass hose
see page 52 for details
E 06 Secondary overvoltage Master detects output voltage is too
high (>100V)
check wiring of power unit
see page 55 for details
E 07 EEProm checksum error no welding program stored or error
during reading from memory
switch the machine off and on again,
if necessary transfer the welding pro-
grams to machine again
E 08 Wire feed / tacho – power consumption of wire feed
motor too high
–
tacho not connected to DMR X5
– CAN-Bus connection between
MAPRO and DMR is interfered/
blocked
– blow out torch package with com-
pressed air
–
check wire feed unit
– check motor current (*4)
–
check wiring of wire feed motor and
pc-board DMR
–
check interpass hose package
see page 56 for details
M01 Motor overvoltage
(only at DMRPP)
supply voltage for motor driver is too
high (70V DC > 130V DC)
–
check control transformer
– check motor supply
M02 Motor op. voltages
(only at DMRPP)
supply voltage for motor driver is too
low (70V DC < 30V DC)
–
check control transformer
– check motor supply
M03 Motor 1 overcurrent
(only at DMRPP)
wire feed motor draws too much cur-
rent
–
check wire feed unit and motor
–
check motor current (*4)