148 • Crestron Zūm® Wired Solutions Product Manual — Doc. 9349B
Error States
The following table provides corrective action error states that are indicated by the ERROR LED.
If further assistance is required, please contact a Crestron True Blue Technical Support
representative.
LED Flash
Pattern
Issue Action
1-1 The secondary
processor is in
bootloader.
Power cycle the unit.
1-2 The secondary
processor is
unresponsive.
Power cycle the unit.
1-3 The secondary
processor firmware
update failed.
Power cycle the unit.
2-1 There is an
overcurrent error.
Check the output for a short circuit or overload. Verify that the
device is not dimming in Forward Phase Dimming mode with
incandescent or electronic drivers connected.
2-2 A FET is shorted. Contact Crestron's True Blue Technical Support.
2-3 An overtemperature
error exists.
Check the output for overload. Ensure that the device is receiving
adequate air for cooling.
2-4 An overvoltage error
exists.
Verify that the device is not dimming magnetic transformer loads
in Reverse Phase Dimming mode.
3-1 A zero-cross sync
error exists.
Change the Zero-cross mode from Basic mode to Filter mode.
3-2 No AC Power. Verify that the incoming AC voltage is within spec.
Zero-Cross Filter
An unusual line condition, indicated by a 3-1 flash pattern from the ERROR LED, can be corrected
by changing the Zero-cross mode from Basic mode (default) to Filter mode. Consult with
Crestron's True Blue Technical Support before changing the Zero-cross mode. To change the
Zero-cross mode:
1. Remove the cover as shown in Universal Dimmer Load Controller Operation on page 146.
2. Press the ZERO CROSS button. The BASIC or FILTER LED lights.
l
BASIC LED: Indicates that basic filtering is being performed.
l
FILTER LED: Indicates that the ZUMLINK-EXP-16A-DIMU is using filters to sync the
AC line power.
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