Hilti FX 3-A Operating Instructions Manual page 47

Trouble or fault
The display shows 'F.04' and
the service indicator flashes.
The display shows 'F.03'.
The temperature indicator
flashes. The fault indicator on
the hand tool flashes.
The display shows 'F.02' and
the "Battery capacity" indi-
cator LEDs have all gone out.
The service indicator flashes.
The fault indicator on the
hand tool flashes.
The display shows 'F.05' and
the "Inert-gas can" indicator
LEDs have all gone out. The
service indicator flashes. The
fault indicator on the hand
tool flashes.
Product cannot be switched
on.
The battery is not charging.
No welding current
9.2 Indicates a fault
Faults or irregularities detected by the welding machine are shown on the display by an F. accompanied by
a 2-digit fault code (e.g. 'F.02'). In addition, and depending on fault type, fault indicators on the welding
machine and the hand tool light up.
*2302408*
Possible cause
Hand tool not connected or is not
detected.
Tool temperature too high
Tool temperature too low
Battery discharged - the deep
discharge prevention system has
tripped.
Fill level of the inert-gas can too
low.
Battery deep-discharged on ac-
count of being stored for too long
without being recharged
Operating panel faulty
Communication error between
battery and charger.
Fan in the product faulty
Automatic thermal cut-out function
has tripped and shut down the
product.
Supply of cooling air insufficient
Air filter clogged
Power unit error
2302408
Action to be taken
▶ Connect the hand tool.
→ page 31
▶ If the hand tool is already
connected, disconnect the
connections to the welding
machine and reconnect the
hand tool. → page 31
▶ Check the ambient temperature
and lower it if possible.
▶ Allow the product to cool down.
Do not attempt active cooling of
the product!
▶ Check the ambient temperature
and raise it if possible.
▶ Operate the product in a warmer
ambient temperature.
▶ Charge the battery. → page 29
▶ Change the inert-gas can.
→ page 30
▶ Charge the battery. → page 29
▶ Contact Hilti Service.
▶ Contact Hilti Service.
▶ Contact Hilti Service.
▶ Wait for the cooling phase to
conclude. The product will
switch on again by itself after a
short time.
▶ Comply with the instructions
relating to the set-up conditions.
→ page 29
▶ Clean the air filter. → page 34
▶ Switch the product off and then
on again.
▶ If the fault recurs frequently,
contact Hilti Service.
English 37