Hedson IRT-System IRT-301 Manual De Instrucciones página 9

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.
Problem
Display and diodes
are not illuminated
No function when but-
tons are pressed
The cassette(s) does not
switch on
Individual lamps do
not light
Lamps light up at full
power and machine
cannot be switched off
IRT-301, 302, 230 V, 400 V, 1 Ph, 3 Ph
Possible cause
No voltage to the
control electronics
Broken printed circuit
board
Broken printed circuit
board
Connector not OK
Solid State relay
broken
Broken lamp
One of the phases not
occurring properly
Solid state relay faulty
Action
Check voltage
Change card
Change card
Check/change
connector
Change relay
Change lamp
Check fuses
Check connector
Replace solid
state relay
9