I installed a brand new dimmer module in my project last Friday. I configured it to dim 1 light bulb (lampadair) with memory function controlled via 2 push buttons. After configuration (resistive load - using the connection scheme on page 6 of the supplied installation manual) it worked perfectly for 2 days and since yesterday the light bulb does not lit anymore. Connecting the wires of the light bulb back to a VMB4RY works perfectly.
What could be wrong and what should I do now?