ASIAIR Plus Buzzing/Humming Noise with Dew Heater Bands

andy7788

Hi everyone,

I just tested my ASIAIR Plus powering 3 dew heater bands and noticed the unit was making a buzzing/humming noise. If I power off the 12v outputs with the bands connected the noise stops.

Is the noise anything to be concerned about? Is it normal?

I intend to power the dew heaters for my whole imaging session, which could be 6-8 hours.

Thanks,
Andrew.

PMTeam@ZWO

andy7788 It's normal, the sound comes from the PWM function.

andy7788

@ASIAIR@ZWO#61046 OK, thanks for the confirmation.