10 Fault Finding
152
Yellow LED No Ethernet
Cable Connected
Yellow LED
Ethernet Cable
Connected between
PIDU Plus and
NIC/Switch/Hub
Valid Ethernet Link
and no traffic
Will be on solid for a
valid link.
Valid Ethernet Link
with traffic
Will be on solid, but
will blink randomly as
traffic passes through
While in “Recovery Mode” the unit will only be
accessible via the IP address 169.254.1.1.
Table 22 - Power Indoor Unit LED check chart
If the above procedures fail to diagnose the issue you may have a wiring fault. Unplug the
RJ45 from the PIDU+ and check the following resistances at the RJ45:
1. Check the cable resistance between pins 1 & 2, 3 & 6, 4 & 5 and 7 & 8 at the RJ45.
2. Check against column 2 in Table 23. Resistances for each pair should be within 1 ohm of
3. Check the cable resistance between pins 1 & 3 at the RJ45. Check against column 3 in