Has anyone modified their fan speed on their roof top ac? Mine blows so hard even on low speed. Our TT is only 19' and the air force is way too much. I am wondering if I could adapt a variable speed control (rheostat)to have more control over fan speed. Has anyone done this or know of a way to do it?
In this scenario, slow down your fan, otherwise coil might be turned to ash. Don't try to repair it yourself as it might create more sophisticated problem, which would let you to spend more money than usual. It would be wise to hire some competent west palm beach air conditioning repair tech guy.
prichardson wrote: An A/C to work properly needs a certain minimum airflow for a given capacity. Lowering below that point leads to severe icing and shortened compressor life. I would not recommend lowering below what the manufacturer set as low speed fan.
Good info. I didn't think about the airflow across the coils and icing. Thanks for all input.
An A/C to work properly needs a certain minimum airflow for a given capacity. Lowering below that point leads to severe icing and shortened compressor life. I would not recommend lowering below what the manufacturer set as low speed fan.
Many/most Ac units are loud - nature of the beast. In my rig operating the AC on low contributes to icing issues - fortunately in Oregon we don't have to use AC often.
You need to find out if the motor is AC or DC driven.... most likely AC (cheaper drive method). IF its AC, then the speed control isn't an "easy fix" as the "duty cycle" of the AC has to be "altered" NOT the voltage level. For a DC motor, a rheostat or equivalent could be used.
This is an example of an AC blower control (used in things like stove fan hoods). The important value besides the voltage is the amperage rating. This one is only rated for 2.5 amps. Not sure what your AC fan is rated for but probably 3-5 amps.
