Question:

What do the undocumented faults of the LED Flashing 8, 11 or 12 times mean on a PCS softstarter?

Answer:

The PCS Troubleshooting guide defines LED Fault Flashes from 1 through 6, however 8, 11 and 12 LED PCS Fault Flashes are unpublished in the literature. Here is the explanation for each type of fault.

F8 - Internal 24 V Power Fail (8 Flashes)

This fault only occurs on PCS-108...480 amp units. Checks internal supply power when internal bypass contactor pulls in.

Solution

• Check for a weak external Power supply on 24VAC/DC powered units.
• If external power is ok, it might be an internal fault on the PCS which is not field repairable. The entire PCS will need to be replaced. 

F11 - Personality Checksum Fault (11 Flashes)

This fault can occur on any size PCS unit.  This is not field repairable.  The entire PCS will need to be replaced. 

F12 - Firmware Corruption (12 Flashes)

This fault can occur on any size PCS unit.  This is not field repairable.  The entire PCS will need to be replaced. 

For additional information please contact your nearest authorized distributor, sales representative, or call our customer service or technical support lines. service or technical support lines.