Trouble Shooting - Hedson IRT-401 XLNC Manual Del Usuario

9.

Trouble shooting

Please carry out the automatic test under point 7 in order to locate the fault.
Rectify the fault according to the diagram.
Individual lamps do not
light
The mobile does not
operate as an XLNC
(no temperature is
shown, only four
parameters for setting
of values)
"Heating failure" is
shown in the display.
Lamps light up at full
power and machine
cannot be switched off
10
IRT-401/402 XLNC, 230V, 400 V, 1Ph, 3Ph
Broken lamp
One of the phases not
occurring properly
Bad connection
between small and
large printed circuit
boards
Pyrometer defect
The pyrometer is
measuring outside the
object
Solid State relay faulty
Change lamp
Check fuses
Check connector
Repair/replace
printed circuit
card
Replace pyrome-
ter / pyrometer
board
Correct the
measuring point
of the pyrometer
Replace solid
state relay