Carlos Carboni

First, play with the bucket underneath it. if it is not properly in, it will not work. Juggle it to find the right spot that triggers it on (fail safe mechanism, it will not work if the bucket is not in,so it does not flood your place). the blob of the bucket that switches it on, might be broken

Failing that... google delongi and the frost safety thingy, it's temperamental in some models, it thinks that it's freezing on some "warm" days"