15
IQ Power HL Sensor
5201252 Rev. A
7. TROUBLESHOOTING
NOTE
– Only qualified personnel are to perform troubleshooting tasks.
Problem
Cause
Solution
Power indicator
on interface NOT
illuminated
No supply voltage
from Control Station
Turn on Control Station
Change POWER & COMM
connection at Control Station
Wiring problem
between interface
and Control Station
Check wiring for cuts or breaks
Check connectors for
disconnection
Warning indicator on
interface illuminated
and a sensor number
indicator is blinking*
Interface is in
“Warning” (web
voltage above
Warning Setpoint)
Correct problem causing high web
voltage
Increase Warning Setpoint to
eliminate nuisance warning
Fault indicator on
interface illuminated
and a sensor number
indicator is blinking*
Interface is in
“Alarm” (web
voltage above Alarm
Setpoint)
Correct problem causing high web
voltage
Increase Alarm Setpoint to
eliminate nuisance alarms
Fault indicator on
interface flickering
(Comm indicator
illuminated)*
Internal fault in
interface
Cycle power to interface to see if
fault clears
Fault indicator and
a sensor number
indicator on interface
are flickering (Comm
indicator illuminated)*
Wiring problem
between sensor and
interface
Check sensor wiring for cuts or
breaks
Check connectors for
disconnection
Problem with sensor
module
Disconnect sensor and cycle power
to verify if sensor is the problem
Repair or replace defective sensor
Comm indicator
on interface NOT
illuminated
Wiring problem
between interface
and Control Station
Replace interface modular cable
with known good cable
Incorrect number of
Sensor indicators are
illuminated on interface
Ex: 3 sensors connected,
only 2 Sensors LEDs lit.
Duplicate sensor
numbers
Check sensor numbers for
duplication. See 5201257 for
changing sensor number
* If Warning or Alarm is activated, see Control Station and tap on Warning / Alarm icon for details.