THERMACUT EX-TRAFIRE 45HD - Page 38

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10 Faults and troubleshooting EX-TRAFIRE
®
45HD
H18  Watchdog fault.  Replace the control PCB.
H19  Incorrect current
setting.
 Verify the cutting power
settings.
H20  Incorrect cutting mode.  Verify the cutting mode.
H21  Gas pressure fault.  Check the gas supply.
Table 13 Fault messages in the display
Error code Cause Trouble shooting
Table 14 General faults
Error Description Cause Troubleshooting
Switch is set to
ON, LCD does
not illuminate.
 No/low input
power voltage.
 Power supply is
insufficient.
 Check the input power
voltage.
 Power cable is not
connected.
 Plug the input power plug
into the socket.
 Switch is defective.  Switch must be replaced by
an authorized professional.
Gas does not
flow when the
torch trigger is
pressed or the
CNC start signal
is switched on.
 Gas valve
defective or
missing power
supply.
 Cable to gas valve
loose or not
connected.
 Contact your retailer. Gas valve is
defective.
 Torch trigger is
defective.
Arc does not
ignite and there
is no fault code
when torch
trigger is
pressed or the
CNC start signal
is on.
 Incorrect
cutting torch
type is
connected.
 Cutting torch type is
incorrect.
 Verify the proper cutting
torch is connected.
 Incorrect gas
pressure.
 Consumables are
defective.
 Inlet gas pressure is
too high
 Check consumables and
replace, if necessary.
 Reduce pressure to
6bar/87psi.
No transfer
between pilot
arc and
workpiece.
 Poor contact
between work
lead clamp and
workpiece.
 No contact between
work lead clamp
and workpiece.
 Remove contamination and/
or oxidation from the
workpiece and the work lead
clamp.
 Attach the work lead clamp
to the workpiece in order to
allow maximum electrical
conduction.
 Distance between
cutting torch and
workpiece is too
great.
 Decrease the distance
between cutting torch and
workpiece.
 Work lead is
defective.
 Have the work lead checked
and, if necessary, replaced
by an authorized
professional.