How to Add a Temperature-Controlled Cooling Fan to your Van or RV Power System using the W1209 Relay
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- Опубліковано 23 лип 2024
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Great info! Thanks so much for all the effort you put into these videos!
Thanks Duane, it makes it worth the effort when people get value out of them!
thank you for the fantastic video. My temperature controlled Victron power system also thanks you. Please keep making these instruction videos, you have a good knack for it.
Thank you Edwyn, glad that was helpful! I appreciate the kind words, more videos on the way...
Literally what I was looking for, thank you!
Awesome, glad that was helpful! Thanks for checking out the video.
Thanks! My battery/electrical compartment is very enclosed and the system would get very hot during shore power charging. I competed this project today. This video was very helpful!
Hey, thanks, great to hear this video helped you improve your setup! Thanks for tuning in-
Important info. Thanks!
Thanks for checking it out!
another great video
Thanks Greg!
Great advice. 💪🏻
Thanks Phil!
Thanks I now have the info.
Awesome, glad you found it! Thanks for checking out my video.
Would be cool to link the breaker to the temp gap between the interior and the exterior of the box rather than a hard value. Would help in warm countries (avoiding running the fan all the time if its 30 degrees outside)
What do you think of adding louvers so that air can escape but prevent or limit unwanted things getting into the box? A vent of sorts.
Hey Aaron, I think that would be a great idea, louvers over the fan so that things don't get in there, especially for using this outside. Thanks for the comment!
Would you recommend mounting components to aluminum plating and have a gap between the aluminum and plywood wall?
Great info! Can you give a link for the thermocoupler?
Hey Denny, yes it is this unit (the version that comes with the case): amzn.to/3k9w18i
What AWG wire did you use?
Can it be used the other direction to turn on 12v heating pads (some already have though but I'm curious)
Hi Clint, yes you can use these to turn on a heating device if you put them in the "H" mode under the P0 setting. Although as you say, a lot of the heating pads have their own temperature sensor and turn themselves on and off automatically. Thanks for the question!
I got a replacement fan from Victron that is 24 volt. What is your opinion of how best to wire it. My unit is mounted in the pass through of my RV and of course is located on the bottom of the 12/3000 inverter.
Hi Roy, thanks for the inquiry, if it's a replacement fan for the 12/3000 unit, then you will want to mimic the wiring of the old one, perhaps photographing the setup as you remove it. If it's going in the exact same spot then you just want to ensure it's wired the same. I hope that helps, let me know if I misinterpreted the question. Thanks, Ross
Great video! Going to do this in RV. I wonder if there’s one on the market that displays the temperature in Fahrenheit for us that are Celsius challenged? 😂 Oh, and if I’m using a muffin fan connected to a 12v battery what size fuse is ok?
Thank you Yogi Beer. There are some options from Coolerguys and Inkbird that have Fahrenheit, but in general these little w1209 controllers are the bottom-priced option and they're all in Celcius. You could also use a monitor like Simarine PICO, Cerbo GX or BMV-712 to set off a relay based on a temperature reading, they can all do that. On the fuse I would put 5 amps, that's my go-to for small unknown loads. That's up to 60 watts, so your fan should be good to go. Hope that helps, thanks for stopping by my channel.
Nice! Also looking for the video "Protect and controll your van or RV batteries" It seems to have disappeared!
Thank you! I did take that video down as there was a mistake and I am refilming it.
@@rosslukeman Oh! I did build a battery box along the lines you laid out in the video and it works fine. Only catch is that you have to be careful about not sending current in the wrong direction through the SBP when charging or paralleling an other battery. Do you have a solution for that?
I am sorry if this is a dumb question but why are there two 12v inputs into the controller? Why would it not be one (always hot) and then the relay once activated just allows it to flow to the fan? Thanks for your videos!
Hey there, this is a good question. The reason is that the voltage that powers a relay doesn't have to be the same as the voltage that is sent through to the appliance. For instance you can have a 12VDC relay send power to a 120VAC appliance. The control voltage is 12 volts, but the appliance doesn't necessarily run on that. If it is the same voltage, you just add a jumper wire between terminals on the relay to power the relay itself and the connected appliance from a single wire, as you described.
I’m trying to figure out how to instal a therm-switch like this to my solar charge controller which powers 12v fan.
So instead of the load terminals on the charge controller powering straight to the fan. I should connect to the two terminals on the right side of the thermostat. And then put the fan red wire into the left terminal? Were does the black fan wire end up at? Jeesh I know this sounds dumb. I’m learning 😊 thank you
Please could you tell me what brand fan controller you used as well as the fan. Thank you!
Bill I saw your other comment, but in case others read this, it's the 12V Blower Fan from Coolerguys ( amzn.to/3P945yH ) and the W1209 relay with case from HiLetgo ( amzn.to/3bGsxcm ). Thanks!
@@rosslukeman Thank you Ross for the info, I do appreciate this very much.
I have had two of the w1209 quit working as soon as I install them in my rig,
they worked fine on the bench, is it because my RV batteries are around 13.8 to 14.1 volts ?
No I think they are just cheap. I order 2 packs and usually get at least one to not blow. I think I short-circuit them or something. One of the little modules on the board blows and you can see black where it blew out. Maybe watch how you connect them - positive, then negative, then connect your wires through the relay, and make sure they don’t touch anything or it could blow the board. It may be user error but I tend to blow them too.
@@rosslukeman Okay so you connect them to 14v too, thanks for your help
@@DarrellnKitty Yes my systems usually run up to 14.4 volts and they do fine with that. Good luck with it!
Thanks again
temp sensor seems too “close” to the fan … needs the sensor “shielded” from the fan to ensure reasonable hysterisis otherwise cycling is too short
Sounds good Greg. This was a tight space.