Troubleshooting - Gira 5431 00 Operating Instructions Manual

Wireless dimming actuator, 4-gang
7

Troubleshooting

Connected LED lamps or compact fluorescent lamps switch off in the lowest dimming position
or flicker
Cause: The set minimum brightness is too low.
Increase minimum brightness.
Connected LED lamps or compact fluorescent lamps flicker
Cause 1: Lamps are not dimmable.
Check manufacturer's instructions.
Exchange lamps for another type.
Cause 2: Dimming principle and lamps do not optimally match.
Check operation in another dimming principle, reduce connected load as well if neces-
sary.
Connected LED lamps or compact fluorescent lamps in the lowest dimming position are too
bright; dimming range is too small
Cause 1: The set minimum brightness is too high.
Reduce minimum brightness.
Cause 2: HV-LED phase cut-off dimming principle does not optimally match the connected
lamps.
Check operation in the "HV-LED leading edge phase control" setting, reduce connected
load as well if necessary.
Exchange lamps for another type.
The output switches the load off briefly and then on again.
Cause: short-circuit protection has tripped but now there is no longer a fault.
Output has switched off, status LED (4) flashes 3 times at intervals of 1 second
Cause 1: Operating mode switch (2) was set to another dimming principle.
The dimming principle was accidentally adjusted: Reset the original dimming principle on
the operating mode switch (see section 5.1. Mounting and Electrical Connection).
The dimming principle was intentionally adjusted: Check whether the dimming principle
matches the connected load. Switch mains voltage off and on again, the dimmer assumes
the new setting.
Cause 2: overheating protection has tripped.
Disconnect output from mains, also switch associated off circuit breakers.
HV-LED phase cut-off: Reduce the connected load. Exchange lamps for another type.
HV-LED phase cut-on: Reduce the connected load. Check operation in the "HV-LED trail-
ing edge phase control" setting. Exchange lamps for another type.
Let the output cool down for at least 15 minutes. Check installation situation, ensure cool-
ing, e.g. provide distance from surrounding devices.
Switch circuit breakers and dimmer on again.
Cause 3: Surge protection has triggered.
HV-LED trailing edge phase control: Check operation in the "HV-LED leading edge phase
control" setting, reduce connected load as well if necessary.
Exchange lamps for another type.
Switch on output again.
Cause 4: short-circuit protection has tripped.
Switch off the mains supply.
Eliminate short-circuit.
Switch circuit breakers and output on again.
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