Important: Please check before connecting the lighting installations
to the devices, if the installation is correctly wired and free from short
circuit or ground circuit.
For that the lighting installation should be directly connected to the
mains and the function of all individual lights must be checked. For 3-phase
installations, the 3 phases should be tested individually (check if only
the affiliated lights are responding) and then all 3 phases together.
If all lights are fully ON and no fuse or circuit breaker switch falls,
it can be called an error-free installation. Only after these short tests
should the dimmers and control devices be connected to the installation.
2) Lamps remains dark: If all lamps remain dark in a
3-phase installation, it can be assumed that the defect is not in the
Is the mains voltage at the entry of the dimmer(s) available ?
Check the fuse and the clamp connection !
Check the control part: is the potentiometer correctly connected ? / is
the push-button control connected to the mains ?
On push-button control: is the push-button control device supplying a
changing voltage ca. 1 - 10 V= at its output?
If only a single dimmer is not functioning: make a short contact on connection
L and 10; if the lamps turns ON, the dimmer must be replaced, if the lamps
stay OFF/dark, there is an interruption at the installation in this circuit.
3) Lamps are only full illuminated: if all lamps on a
multi-phase installation are only full illuminated, it can be assumed
that the defect in not on the dimmers. On a single-phase device: Test,
if an incandescent lamp 60-100W is still full illuminated after disconnecting
the neutral wire. If yes, then the dimmer is defective (most probably
Potentiometer-Control: is the potentiometer properly connected ?
Push-button Control: is it properly connected ?
4) Lamps flicker: on incandescent lamps: if all incandescent
lamps on a circuit flickers permanently and can not be completely controlled
up or down, these device must be replaced.
Lamps flicker at some levels only: Is the load within the correct minimum
and maximum range ? At use of transformers: are electronic transformers
used with leading edge dimmers, or magnetic transformers with falling
edge dimmers ?? (both will destroy the dimmer !!)
5) Control range is too little: MIN and /or MAX setting
of the dimmer device is probably wrong adjusted !
Depending on the control type used (potentiometer, push-button control,
other device etc.) the control range of the dimmer should be adjusted
to the control signal (see adjustment instructions of the dimmer).
On potentiometer control: is the potentiometer properly connected ? does
it have the right OHM-value (25 K) ?