E-4

 

 

TROUBLESHOOTING

 

 

E-4

 

 

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fault Codes

 

 

 

 

 

Code

Description

 

 

Corrective Action

 

31

Primary over current.

If condition persists

 

The machine needs to

 

 

 

 

 

 

contact an authorized

 

be turned off and back

 

 

 

 

 

 

Lincoln Field Service

 

on to reset the machine.

 

 

 

 

 

 

Shop

 

 

 

 

 

 

32

CAP bank A under voltage.

Check input power

 

Self-clearing as

 

33

CAP bank B under voltage.

reconnect to make sure

 

condition ceases.

 

34

CAP bank A over voltage.

the machine

 

 

 

 

 

 

35

CAP bank B over voltage.

is connected for the input

 

 

 

 

 

 

37

Soft start Failed.

power being supplied.

 

Cycle power.

 

39

Glitch on the primary over

Check the machine

 

Self-clearing as

 

 

 

current fault interrupt; possibly

ground.

 

condition ceases.

 

 

 

caused by noise or a signal level

If problem persists

 

 

 

 

 

 

 

 

(misc. hardware fault #1)

contact an authorized

 

 

 

 

 

 

 

 

 

 

 

Lincoln Field Service

 

 

 

 

 

 

 

 

 

 

 

Shop

 

 

 

 

 

 

43

CAP delta; CAP A and B are out

Check input power

 

 

 

 

 

 

 

 

of balance.

reconnect to make sure

 

 

 

 

 

 

 

 

 

 

 

the machine is

 

 

 

 

 

 

 

 

 

 

 

connected for the input

 

 

 

 

 

 

 

 

 

 

 

power being supplied.

 

 

 

 

 

 

44

Main CPU problem. The DSP

Check the machine

 

 

 

 

 

 

 

 

has detected a problem with the

ground.

 

 

 

 

 

 

 

 

CPU.

 

 

 

 

 

 

 

47

Glitch on the CAP/heart beat

If problem persists

 

 

 

 

 

 

 

 

interrupt; possibly caused by

contact an authorized

 

 

 

 

 

 

 

 

noise or a signal level right at

Lincoln Field Service

 

 

 

 

 

 

 

 

the trip threshold.

Shop

 

 

 

 

 

 

 

 

(misc. hardware fault #2)

 

 

 

 

 

 

 

48

The main contactor opened

If condition persist

 

Self-clearing

 

 

 

unexpectedly. (misc. hardware

contact an authorized

 

 

 

 

 

 

 

 

fault #3)

Lincoln Field Service

 

 

 

 

 

 

 

 

 

 

 

Shop

 

 

 

 

 

 

"bad

The selected weld mode does

If condition persists

 

Press the Mode

 

node

not exist in the weld table that is

contact an authorized

 

Select button to

 

####

presently loaded in the machine.

Lincoln Field Service

 

select a different

 

 

 

 

 

 

Shop

 

mode

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

V350-PRO

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Lincoln Electric IM679-A manual Cpu