SmaRT BU-x18XF and BU-xH18XF
U069.3.3
10
7.0
LED Diagnostic Troubleshooting
Table 4. SmaRT BU-x18XF LED Troubleshooting Hints
Indication
Cause
Solution
†
Unmarked LED
active
Input power polarity is
reversed.
Adjust wiring connections to achieve
correct polarity.
+V1, +V2, +V3
Electrical signals not activating
the LEDs.
Is +VDC input power present?
RTX/RRX (LEDs 2
& 3) not active
Check for obstructions preventing line-of-
sight transmission.
Check that the remote control unit is active.
Re-associate the remote control unit with
the base unit.
CTX/CRX (LEDs 4
& 5) not active
Check CAN wiring.
Check that the remote control unit is active.
Re-associate the remote control unit to the
base unit.
In/Out LEDs (LEDs
6 & 7) not active
Check that the remote control unit LEDs
are active when the appropriate buttons are
pushed.
Check that the startup sequence was
followed.
ERR LED (LED 8)
active
Over-temperature or over-
current channel indication.
Check the outputs for loose wiring, etc.
Active channel current consumption less
than 1A typical. (This is not a problem in
cases where less than 1A draw is a normal
condition.)
Health LED (LED 1)
blinking rapidly
Indicates an internal problem.
Contact Cervis, Inc. service department.
† – If the recommended solutions do not resolve the issue, contact the Cervis, Inc. service department.
