Ultrasonic Vapor
Ultrasonic Vapor
Weak ultrasonic humidifier (works but very little vapor)?
I have a second-hand (so out of warranty) Holmes humidifier, one of the Cool Mist ultrasonic models. A couple of weeks ago I let it run dry accidentally, and since then it barely produces any vapor.
Points of note:
- The fan is OK.
- The transducer (metal plate that vibrates to produce the vapor) is definitely running but it's just far too weak. I can see the water 'jumping' when I lift the reservoir off the base, but the vapor is so little it's barely visible. Before this happened, I could see lots of vapor even on the low setting.
- I cleaned all the scale off the transducer and water level sensor with vinegar and a soft toothbrush but it didn't help.
Help troubleshoot please?
The fact that it ran dry has ruined it! These transducers are designed to rely upon continual water contact to not overheat and die a sudden death. What you suspect to be working is just the transformer trying to excite the damaged transducer. The ill transducer will respond but only as a token of it's former efficientcy. It's like a good car running on flat tires.
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