Hi my name is Jahlani, firstly let me apologize in advance if I've posted in the wrong place, this is a very rare thing for me.
So ill keep it short and sweet, and also, I am a bit of a tinkerer, but PLEASE assume that i know nothing about electronics.

OK so what i need is simply to get this unit to power on and start working instantly via a controller in a grow tent, but the standby mode hinders that, long story short is that I've exhausted my options trying to get the humidifier to work with the default factory settings to have my desired targets met.

Ive also searched for a Diagram but no luck

Please see attached pics.
Brand: Westinghouse WSHUJ2158B

 

Looks like a couple of microcontrollers, what are the other cables connected to on the 6 pin plug.

 

OK so what i need is simply to get this unit to power on and start working instantly via a controller in a grow tent, but the standby mode hinders that...

So the problem is that the appliance enters standby mode - not "on" mode - when power is applied? You need to manually hit a power button (top middle of control panel) before it starts running?

There are ways to take over control of a switch and have it "press itself". This can be a little challenging though and I'm not sure it's a good first project for someone that knows "nothing about electronics".

You may be much farther ahead by just finding another dehumidifier that will do what you want, and repurpose or sell the one you have. I've found that a few models on the market will often have old-fashioned mechanical controls, and I think that's what you need.

 

Looks like a couple of microcontrollers, what are the other cables connected to on the 6 pin plug.

Hello!!! That cord runs to the Oscillator!

 

So the problem is that the appliance enters standby mode - not "on" mode - when power is applied? You need to manually hit a power button (top middle of control panel) before it starts running?

There are ways to take over control of a switch and have it "press itself". This can be a little challenging though and I'm not sure it's a good first project for someone that knows "nothing about electronics".

You may be much farther ahead by just finding another dehumidifier that will do what you want, and repurpose or sell the one you have. I've found that a few models on the market will often have old-fashioned mechanical controls, and I think that's what you need.

Yes, when the unit is powered on, it is in standby mode, then I have to use the power on button or remote to turn on the first level of the Humidifier.

Once I'm guided correctly, I'm confident I can give any suggestions a shot.

I'm all for buying a new unit, which I would, but can't at this point in time, so I need to about a month or so with this unit.

So I really need to pull this off for the sake of my Plant project that I'm new at.

 

There is a brute force approach that you might look into. That is to mount a plunger device - a simulated finger - over the power button and then have a controller that advances the fake finger a second or two after power-up. It pushes the button as if you were there doing it. I haven't ever actually used or built such a thing, but your problem is a common one and I'm willing to bet there are some decent solutions out there.
Example: https://www.howtogeek.com/824064/switchbot-bot-review/
Another:

 

There is a brute force approach that you might look into. That is to mount a plunger device - a simulated finger - over the power button and then have a controller that advances the fake finger a second or two after power-up. It pushes the button as if you were there doing it. I haven't ever actually used or built such a thing, but your problem is a common one and I'm willing to bet there are some decent solutions out there.
Example: https://www.howtogeek.com/824064/switchbot-bot-review/
Another:

Thank for that, I'll look into it.....Yes i have realized a lot of other situations like this, but they are all unique so far.

 

I really thought this would be simple, i just want it to mist, i dont care for it functioning like normal..just mist...sigh!!!

 

Consult the instruction manual! There may be an option of "Restart after power failure, which would allow the thing to start up when power is applied. It might be that simple.

 

Consult the instruction manual! There may be an option of "Restart after power failure, which would allow the thing to start up when power is applied. It might be that simple.

Yep, I was almost sure I did, but as you mentioned it, I checked again........ no Luck!

 

It is possible that a capacitor across the switch will work. The cap will conduct when the power is first applied but then stop after it charges up.

 

Good thought, "Y", although even that will require getting into the hardware to make the connections. That may be a daunting task for anybody not skilled at fine detail soldering.

 

If you guys think that would work, its ok, I'm willing to try, I've done my fair share of soldering, it's just I won't know the terms and points on the board that you refer too, if illustrated ill catch on, and once given the task, I would still do my research and see if I'm confident enough to give it a try.
Bottom line is at the end of the day I still have to buy another one, this is just to buy me some time that I desperately need, so if you guys think that I could give it a shot and it has a great chance of working, Hey I'm all up for it....and whatever the risk...Give it to me straight, I'll make the decision!!!

 

Another approach would be to leave it powered but intercept and interfere with what it thinks the humidity is. When you want it to stop misting, give it a fake sensor signal that mimics high humidity. The humidity sensor MIGHT be off the board and much easier to get at than the power button.

 

Another approach would be to leave it powered but intercept and interfere with what it thinks the humidity is. When you want it to stop misting, give it a fake sensor signal that mimics high humidity. The humidity sensor MIGHT be off the board and much easier to get at than the power button.

Thanks for this...very interesting to a layman.......this i think i can look into and experiment with on my own....thanks for this one!!!

 

Doesn't the device have a control with a humidity setpoint? I thought that was the while reason to have it.
How about providing a much more complete description of the device, instead of just asking for a solution to the perceived problem. That approach seldom results in useful advice in this forum.

 

The problem is a 3x3 tent is in a 10x10 room. The room has ac.....the equipment in the tent is controlled by an AC infinity controller, I bought a plug/adapter that is supposed to power on or off the humidifier via the controller the but the standby mode hinders that.
Now the humidifier is supposed to handle the 10x10 room as it claims but in reality it does not..but it does handle the 3x3 room easily....so I put it in there...now the humidity in the room is all over the place for whatever reason and when it fluctuates...no matter what setting I put the humidifier on.....I always have to make adjustments to maintain my desired targets, and I'm away and busy quite a bit at times.... this is mostly for lights off.....also the humidifier tends to go off about 5 degrees before the actual setting, this causes me to either go over my max target or min. target depending on my target.....so I can get things to work but only when I'm around to make the adjustments.....and when I'm at work, which runs on a 24-48 HR rotation and cell phone use is limited....this is challenging....so for me it's a humidifier compatible with the controller is a must..but like I said..I just need some time till the end of the month...

 

My error! I was seeking information about the humidifier, such as a physical description , controls section description, and just what sort of control scheme is included. Does it have a humidity level setting ability or is it more of a HIGH/Medium/Low sort of control?? Is the setting a mechanical controller or an electronic controller?? My impression now is that it is a knob with calibration points on a dial of some kind.

 

My error! I was seeking information about the humidifier, such as a physical description , controls section description, and just what sort of control scheme is included. Does it have a humidity level setting ability or is it more of a HIGH/Medium/Low sort of control?? Is the setting a mechanical controller or an electronic controller?? My impression now is that it is a knob with calibration points on a dial of some kind.

I myself misinterpreted what you were actually asking...sorry about that. All the information is on this page....
Westinghouse WSHUJ2158B Digital Cool Mist Ultrasonic Tower Humidifier Instruction Manual (manuals.plus)

 

OK, and after reading that LONG manual it becomes quite obvious that the humidifier is not subject to external control, except for that remote control device.
Thus, given that there is no simple way to effect an ON/OFF control function. three practical options exist. The first option would be to have a solenoid type device press the ON/OFF button on the remote control device, that would require for the system to retain all of it's settings when switched off, that may or not work.
A second option could be to install a linkage to push down on the level sensor float, triggering a low-water shutdown, which should allow a restart when the float was released. But that might be defeated if the timed shut-off due to low water is exceeded. I saw no indication of how long that time interval is. So you will need to discover that.
A third option would be to add a mechanically driven cover over the top that would be opened when your control system demands more humidity.. That might be complex, or it might be simple, depending on just how that humidifier is built, which is not clear from the limited pictures.