Product Manual

SERVICE FIREPOWER FP 95 FC
Service 5-3 Manual 0-5122
5.05 Power Source Problems
FAULT CAUSE REMEDY
1
Primary line voltage is ON.
Welding arc can not be
established.
A Primary fuse is blown. A Replace primary fuse.
B Broken connection in primary
circuit.
B Have an Accredited ESAB Service Agent check primary circuit.
2
Primary line voltage is ON
but when the MIG Gun
trigger switch is depressed
nothing happens.
MIG Gun trigger switch leads are
disconnected.
Reconnect.
3
Primary line voltage is ON,
no wire feed but gas flows
from the MIG Gun when
the torch trigger switch is
depressed.
A Electrode wire stuck in wire liner
or contact tip (burn-back jam).
A Check for clogged / kinked MIG Gun wire liner or worn contact
tip. Replace faulty component(s).
B Faulty control PCB B Have an Accredited ESAB Service Agent investigate the fault.
4
Wire feeds when the MIG
Gun trigger switch is de-
pressed but arc can not be
established.
Poor or no work lead connection. Clean work clamp area and ensure good electrical contact.
5
Jerky wire feed A Worn or dirty contact tip A Replace
B Worn feed roller. B Replace
C Excessive back tension from
wire reel hub.
C Reduce brake tension on spool hub
D Worn, kinked or dirty conduit
liner
D Clean or replace conduit liner
6
Thermal Overtemp Light
is ON and Fan motor is
running
The machine duty cycle has
been exceeded.
Allow the fan to run so machine can cool down. When light
goes out, welding may resume.
7
Thermal Overtemp Light
turns on in less than 30
seconds during welding.
Fan has stopped running or fuse
on PCB has blown
Have an Accredited ESAB Service Agent replace the fuse.
Table 5-2: Power Source Problems