Loud squealing / alarm-sounding noise coming from sink area in the bathroom.
I have a loud alarm-sounding noise coming from near my bathroom sink. It's continuous whether or not the water is running. It's been sounding off for about 16 hours now. Sink is slightly clogged but still draining. Any ideas?
Do you have water alarm in the room? These are a battery operated alarm to warn of a water leak. Look inside the sink cabinet for the alarm box, its about 2 x 4 inches and will have a wire attached to it. The probe is at the end of the wire and when the probe is exposed to water the alarm will sound. I think this is what you are hearing.
Battery Operated Water Leak Alarm
If you find it remove it and check for a leak, as the alarm is indicating there is water present. If you can't detect a leak have a plumber check the drain and water supply lines.