Velleman projects VMBDMI Extended user manual - Manual (Page 17)

VMBDMI Dimmer manual – edition 1 17
Temperature protection
The LED flashes 5 times briefly.
When the internal temperature is higher than 90°C the dimmer will switch itself off. Temperature has to drop
below 60°C to become operational again.
Check following points:
 Connected power too high
 Not enough free space around the dimmer (leave at least 1 module free)
 Temperature inside distribution box too high (provide ventilation inside distribution box)
No fault indication but lamp does not light up
 The lamp is broken or has poor contact with the fitting.
 The circuit breaker or residual current device (RCD) were activated. First find out what caused this action and
solve the problem before reinstating the circuit breaker or RCD.
 The fuse inside the dimmer has melted. This sometimes happens when the lamp breaks.
Remove the top cover.
Use a screwdriver and slightly push the cap of the fuse holder down before unscrewing the fuse holder
anticlockwise. Use a pair of long nose pliers to lift the cap. Replace the fuse and screw the cap back in place.
The lamp remains on
A lamp break down might lead to a short current peak. This peak might damage the triac causing it to keep
conducting.
In this case the module will have to be shipped back to the manufacturer for repair.
Fuse 4A Slow