Stupid question about manual control roof AC

RSD559 wrote:
One more quirky thing about RV A/C units, at least the ones I've had. You can control the temperature, and the fan speed. Mine has Hi, Lo, and Au, for high, low, and auto. In high and low, the fan stays on all of the time, even when the compressor is off. In auto, it chooses high or low, and turns off the fan when the compressor is not on. Also, when you change it from low or high to the other, or if it is in auto and it decides to change the fan speed, the fan will stop for a couple of seconds, but the compressor will continue to run. Pretty strange.

OK,
1. The OP does not have your type AC unit
2. The reason the fan stops when changing fan speeds is simple. The Fan motor has 3 separate wires. One each for each fan speed. So, it must kill power for each fan speed and then power up the other fan speed wire. It cannot do that at the same time. So, there is a small 1 to 2 seconds delay between speed changes. Doug

Boomer, I always told my students that there are no stupid questions, except those that are not asked!

One more quirky thing about RV A/C units, at least the ones I've had. You can control the temperature, and the fan speed. Mine has Hi, Lo, and Au, for high, low, and auto. In high and low, the fan stays on all of the time, even when the compressor is off. In auto, it chooses high or low, and turns off the fan when the compressor is not on. Also, when you change it from low or high to the other, or if it is in auto and it decides to change the fan speed, the fan will stop for a couple of seconds, but the compressor will continue to run. Pretty strange.

There is typically enough unintended outside air infiltration into most RV's that mixing air isn't necessary!

I have always found downloadable manuals on line for most everything.

But no. Several years ago you had an control on the A/C to open either an intake, or exhaust vent (or your choice of either) But I've not seen that on any A/C made this century. They are mostly sealed indoors to out (Some slight leakage may happen via the water drip tray or blower shaft but that is all.

In other threads about a Gen-Turi the nay-sayers and dooms-sayers yammer about the A/C "Sucking in" exhaust fumes.. CAN NOT HAPPEN since modern A/C's do not even have that feature. and on the older ones you can shut it off.

Thanks all

same as a house AC unit. cycles inside air across the coils. doesn't (if it is done correctly) bring in any outside air.

and like a house AC unit, cycles the compressor on and off.

Search for rv ac troubleshooting then select. Bryant rv

No mixing of inside and outside air.

It cycles the compressor at the set temperature.