Airtec RO Plus l - Page 102

102
No light in PLC
Fault
code: Cause Solution
501
No power to the system. • Check supply voltage.
502
24 V DC transformer defect or shorted. • Output from transformer is 0 V DC.
- Check that input voltage is OK, if not, see 701.
- Check output voltage.
- If output is 0 V, remove output wire and measure again.
- If still no output voltage, replace transformer.
- If voltage is ok without any wires connected, see 703.
503
PLC is defect. • Supply voltage is OK, but no light in the display, replace the PLC.
11. Troubleshooting
201218