The fan and compressor run on 115VAC - but the CONTROLS need 12 volts DC.
So, if your roof air quits, and resetting the breaker(s) doesn't help: You might want to take a look at your twelve volt fuses.
I saw another one of these situations today with a customer picking up a class A. Not only was there no 12V out of the fuse, there was none to the fuse bus itself. NEXT STEP?
the Coleman on my trailer doesn't use 12V, only 110V. I know this because I had it down last week, sitting on some sawhorses in my shop, connected to 110V trying to decide which capacitor was out....... replaced it, re-mounted it, and it cools great. unless, there is some type of inverter that converts the 110 to 12 - I can't speak to that.....
the Coleman on my trailer doesn't use 12V, only 110V. I know this because I had it down last week, sitting on some sawhorses in my shop, connected to 110V trying to decide which capacitor was out....... replaced it, re-mounted it, and it cools great. unless, there is some type of inverter that converts the 110 to 12 - I can't speak to that.....
There should be a transformer somewhere . Most run on 12v or 24v like the ones in your home. The thermostat on roof mounts where you have the controls on the ceiling below the AC unit are built into the unit. Like what you have .
The ducted units with a wall mount thermostat use 12v to power them . Like the ones in our homes and what Wolf was talking about.
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05 F-250 CC SRW LB 4x4 6.0 Tow Command Lariat Remote Start All Stock 01 Alfa 40' Toyhouse for all the toys.
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There should be a transformer somewhere . Most run on 12v or 24v like the ones in your home. The thermostat on roof mounts where you have the controls on the ceiling below the AC unit are built into the unit. Like what you have .
The ducted units with a wall mount thermostat use 12v to power them . Like the ones in our homes and what Wolf was talking about.
yep - understand 12v transformers on home A/C units.... having installed and repaired several. my Coleman roof A/C doesn't have a transformer.... maybe mine is an anomaly??
wasn't trying to short Greywolf on his wisdom.... Lord knows he's forgotten more than I'll ever know........
There are a few units out there that are non-ducted but have a remote or wall mounted control.
The roof air assembly is made by one company, and the interior plenum might be made by a number of places. And then there are programmable "ZONE" controllers...
THOSE are added after the plenum is decided on for whatever is installed on the roof - so now you have an A/C unit made by three different groups and the next A/C or heater unit down the line might be made by who knows who...
But it's fun - in much the way putting together a street car out of five or six different donor machines can be.
You may have a Coleman, GE, Dometic, or other top, an RV Products plenum, and a Power Gear zone controller.
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01 Alfa 40' Toyhouse for all the toys.
