Help In The Event Of Problems - AEG Thyro-A Operating Instructions Manual

8. Help in the event of problems

The devices delivered correspond to quality standard ISO 9001. Should
you experience any malfunctions or other problems, please contact our
24-hour service hotline (Tel.: +49 / 2902 / 763-100).
Please also see contacts on page 6.
Here are several tips to help resolve problems:
Error : LED ON green does not light up or LED „pulse inhibit" flashes
slowly
• Check power unit fuse F1:
If the fuse is defective :
• Check if there is a short-circuit at the load or wiring.
• Check the type of load. When setting for an ohmic load and using a trans-
former load the fuse F1 can be tripped by too high rush currents.
• With high temperature elements with a larger R
check that in operating mode TAKT the switch-on current does not ex-
ceed the rated current of the device.
• With a transformer load an alloyed thyristor can generate a pulsed DC
voltage and thus lead to a case of fusing. Check with an ohmic load e.g.
100W light bulbs single-phase / in star connection.
• Check microfuse F2:
If the fuse is defective :
• Replace defective fuse (500V 1.6A T). Also check the fuse in cases of
faults with the external fuse if present.
• Check SYNC voltage:
• Check if the synchronization voltage at the affected module is available
between the microfuse and the terminal X1.1 at the affected module. As
long as the fuses of the module are consistent the voltage can alterna-
tively be measured between U1 and X1.1,...
/ R
warm cold
79
ratio you must
EN