04 error codes, 04 error codes -4 – Tweco 500SP PowerMaster Automation User Manual
Page 72

POWERMASTER 400SP, 500SP AUTOMATION
7-4
March 16, 2007
7.04 Error Codes
In case of a malfunction, an error code is indicated on the digital multifunction display (54) and the corre-
sponding error description appears on the LCD display (50). As long as an error code is indicated, welding
operation is not possible.
*1 Check module temperatures in menu Extras, Diagnosis > Module temperatures 
*2 Check supply voltages in menu Extras, Diagnosis > Operating voltages 
*3 Check the flow rate in menu Extras, Diagnosis > Flow rate cooling system
Code Description
Cause
Remedy
E01
Thermal overload
Thermal sensor of power unit measures a too 
high temperature (>176°F) 
Let machine cool down in standby (*1) 
Check temperature sensor (short circuit) 
E02
Mains overvoltage
Mains voltage too high (24V supply > 36V)
Check mains voltage and control 
transformer (*2) 
E03
Secondary over-current
Welding current is too high
Notify an accredited Thermal Arc Service 
Provider for repair 
E04
Air cooling error
Temperature sensor of the power unit 
detects that the unit heats up too fast 
Check fans and their wiring
E05
Cooling system error
Flowrate of the cooling liquid is too low (< 0,3 
l/min) 
Pump is not working 
Check connectors of flow-meter, level of 
cooling liquid and flowrate (*3) 
Check fuse SI7 (2,5A) on pc-board MV-
MAPRO 
E06
Secondary overvoltage
Master detects output voltage is too high 
(>100V) 
Notify an accredited Thermal Arc Service 
Provider for repair 
E07
EEProm checksum error
No welding program stored or error during 
reading from memory 
Transfer welding programs to machine 
again, exchange MV-MAPRO if error still 
persists 
E08
Wire feed / tacho
Power consumption of wire feed motor too 
high 
No tacho signal 
No CAN-Bus connection between MAPRO 
and DMR 
Blow out torch package with compressed 
air 
Check wire feed unit 
Check wiring of wire feed motor and PC-
board DMR 
E09
Error v/a measuring
Measuring difference between Master and 
Process 
Check wiring of pc-board LSW, pc-board 
DP-EMV and PC-board DP-UFI-BO 
E11
Remote-control connection
Short circuit between remote control cables
Check remote control and wiring of remote 
control socket 
E12
Communication Process
Process is not responding to Master
Switch the machine off and on again 
Optionally exchange PC-board DP-MAPRO 
E13
Temp. sensor error
Temp. sensor is defective
Notify an accredited Thermal Arc Service 
Provider for repair 
E14
Op. voltages error
Supply voltage is too low (< 17V)
Check mains voltage and control 
transformer (*2) 
E16
Overcurrent protection1
Power consumption of power unti 1 is too 
high 
Notify an accredited Thermal Arc Service 
Provider for repair 
E17
Op. voltage 18V error
18 V from control transformer missing
Check mains supply and control 
transformer 
E18
overload protection
Safety shutdown to protect electrical 
components 
Temp. sensor is disconnected 
Let machine cool down in standby 
Check temp. sensor 
E19
Power module error
Chargeup time for capacitors >1 second
Check mains input 
Check MVPWRUP board and it’s wiring 
E20
Overvoltage sec.
Process reports a too high output voltage or 
no voltage 
Notify an accredited Thermal Arc Service 
Provider for repair 
E21
Output voltage/current
External current/voltage or measure-
difference between Master and Process 
Notify an accredited Thermal Arc Service 
Provider for repair 
E22
Mains undervoltage 1
Power unit 1 reports mains voltage too low
Check mains voltage and mains rectifier
E23
Mains overvoltage
Power unit reports mains voltage too high
Check mains voltage
E24
Overcurrent protection2
Power consumption of power unti 2 is too 
high 
Notify an accredited Thermal Arc Service 
Provider for repair 
E25
Power module detection
DIP-switch on pc-board MVDRV have been 
set wrong 
Notify an accredited Thermal Arc Service 
Provider for repair 
E26
Error voltage symmetry
DC-link voltage difference (>50V) between 
power units 
Notify an accredited Thermal Arc Service 
Provider for repair 
E27
No program (DSP)
Wrong material-wire-gas combination 
Welding programs faulty or not available 
Select other material-wire-gas combination 
Transfer welding programs to machine 
again 
E30
Op. voltage 15V error
Supply voltage is too low
Check mains voltages
E31
Communication error
Master is not responding to Process
Switch the machine off and on again
?
A “?“ is shown in the display The display board doesn’t get any data from
the MV-MAPRO
Check the flat ribbon cable of the DS20BF 
Check interpass hose (only machines with 
separate wire feeder) and it’s connectors 
Check PC-boards DMR and MV-MAPRO 
