ASIAir Shutting Off Randomly

AsaSpadeSS

So I have been having a weird issue with my ASIAir plus (AA+) either shutting off randomly, or not turning on. I have narrowed down the issue to only when I have my dew heaters plugged into the DC 12V ports. I have 2 SVBony dew heaters, they are the USB ones, and I have removed the temperature controller they come with and used a USB to dc 2.1 x 5.5mm adapter. That being said I have 2 separate heaters plugged into 2 separate DC ports on the AA+. I have one heater set at 40% and the other at 20%(I thought it was related initially). If I have them both or a single one plugged in, sometimes when I turn on the AA+ the device will never "beep" to signal it is powered on, when I check, all the LEDs turn off within 5 seconds. If I unplug the heaters from the AA+ it turns on just fine, and once its on, I can plug the heaters right back in and they will start buzzing like normal. The past two night after setting up, getting polar aligned, focused, guiding setup etc, randomly during my session, I lose connection, only to realize the AA+ wifi network is gone. I go outside and the switch is still on, but no lights on the AA+. Is there something hardware related wrong with my AA+? I have seen other users use these heaters for years, do I need to run them off of 1 DC port? Is my power supply garbage? (Even though I have tried another one, have no issues with no heaters, and its the same model power supply I use for my mount, and has been rock solid) I have no idea what could be causing this. I only have a DSLR, guide camera and mount plugged into my USB ports on the AA+. DSLR and mount both get their own separate power supplies, so can't be anything related to power spikes as there is only power from the AA+ to the heaters. I would really hate to have to run a separate powered USB hub just for my dew heaters, especially since the AA+ should be able to handle them, and then some, especially only at 40% and 20%. The app holds the designation for each heater and the percentage, so they aren't starting up right at 100% for both and overloading it causing a shut down...at least for when I plug them in after the AA+ successfully powers on. Please, any input is appreciated, I'm really hoping it isn't my AA+ itself.

w7ay

AsaSpadeSS they are the USB ones

Do NOT connect a 5V (USB) dew heater to a 12V PWM outlet.

The PWM outlet allows you to control the average power, but the peak current is still determined by the 12V output. Cheap PWM controllers, like in ASIAIR, will not be able to handle the peak current.

Chen

Astrop

I think you already know the answer. It's generally bad practice to run dew heaters off an asiair as they draw an immense amount of power, probably the most of any single item within a single imaging rig. Other things can cause the issues you've had with the asiair acting strange, and they all point to drawing too much power, I've had it with a WiFi extender.

Power such things separately.

AsaSpadeSS

Astrop
You guys were correct. I guess I was kinda hoping it wasn't the case but it is what it is. I now have them plugged in on their own with a usb brick. I even tried leaving the AA+ on for 2 days with it powering my EQM-35 mount and DSLR, which I wouldn't have even considered haha and not a single shut down. Must be how the AA+ deals with the PWM outlets or the heaters themselves. Thanks guys!