Daihen Welbee WB-A350P, Owner'S Manual

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9-3
Chapter 9 T
roubleshooting
T
ROUBLESHOOTING
T
ROUBLESHOOTING
C
HAPTER
9
9.2 Troubleshooting
This section explains the typical problems other than the error codes, their causes, and how to cope with
them.
Check the table below before requesting repair service.
E- 751
Temperature of re-ignition
control circuit has exceeded
allowable range.
Surge voltage of secondary side
switch has exceeded allowable
level.
• Leave it untouched (with the power on), operate the cooling fan for 10
minutes or more, and then turn OFF the power switch.
• Do not use unnecessary extension cable.
• Check the state of extension cable and the extension cable mode setting.
（
4.2.2.1 Precautions for connections for AC TIG welding, 6.10.2.44 F62:
Extended cable mode
）
E- 951 There is a duplicate ID on a
single bus (*1)
• Turn off the power switches of all other CAN-connected welding power
sources, then turn on the power switches and check the setting of internal
function F43. (
6.10.2.33
-
F43: CAN ID)
• The error code will disappear when the power switch is turned off.
• Before inspecting the welding power source, make sure to read "8.1
-
Precautions for
Maintenance and Inspection".
No. Problem Possible cause Corrective action
1 The power switch has tripped.
Leak has occurred in the
welding power source. DO NOT turn on the power switch. Contact your
dealer.
2
The power LED switch does not light
even when the power switch is
turned on.
The primary power source is not
supplied. Supply the primary power source within 414 to
506 V.
3
Nothing is displayed on the right/left
digital meters even when the power
switch is turned on.
4
"Temperature WARNING" LED lights
and an error code is displayed when
the power switch is turned on. The protection circuit has been
activated due to temperature
error.
Leave it untouched (with the power on) and
operate the cooling fan for 10 minutes or more,
and then turn off the power.
After the above, clean dusts inside the welding
power source. Check the connection of the
output terminal. (
8.3
-
Periodical Inspection)
5 Shield gas is not flowing.
The valve of gas cylinder is
closed.
Open the gas valve.
The pressure of gas cylinder is
insufficient.
Replace the gas cylinder.
Setting/handling of the external
inputs is not correct.
Check that the setting of internal functions F29
to F32 is correct. (
6.10.2.24
-
F29 to F32:
External input terminal setting)
The external input cables are
disconnected/short-circuited.
Check that there is no abnormality in the cables
connected to the external input terminal block.
If any, repair/replace the cables.
6 Shield gas does not stop flowing.
Setting/handling of the external
inputs is not correct.
Check that the setting of internal functions F29
to F32 is correct. (
6.10.2.24
-
F29 to F32:
External input terminal setting)
The external input cables are
disconnected/short-circuited.
Check that there is no abnormality in the cables
connected to the external input terminal block.
If any, repair/replace the cables.
Error
-
code Error cause Action and how to cancel error