Sunseeker AC Question

[Mike & Molly]

Our 3110DS didn't come with a manual.
Dealer is no help.
Seems to be working fine.
Question is:
Is it more efficient to leave the round ceiling vents open
thru out the RV with the main center vent closed.
Or just the opposite, or a combination or the two.
Also after it has cooled down the RV it goes into a "low speed mode"
It will switch from high fan speed to a lower fan speed automatically.
Is this normal?

[RvBill3]

For overall cooling use the round ducted vents. Large square vent is actually for RVs that don't have air ducts. It can be used for quick cool down of the area where it is located but then air will be diverted from round ducts. If you have the thermostat fan setting on auto, the fan will shift from high to low as needed to get the temperature you want, and will shut off when done. You could also set fan to low or high and it would always be that speed.

[TURBS]

Just a suggestion here but if you start shutting vents to only cool certain areas the a/c will most likely "freeze" up.
It requires complete air flow.

Just an fyi.

Turbs

[BigJohnD]

We close a few to force more air to certain areas, but just a few. Considering duct size and vent size compared to the quick cool vent size, a few wont hurt. As mentioned though, close too many and freeze it will.

A question I'd like to add as I can't remember if I ever got an answer, when our switches fan speeds from high to low, the fan shuts all the way off then kicks on in the lower speed. Compressor remains on. It's always done this, works fine, but the last unit I had did a smoother transition. The control box and t-stat have been changed due to another problem. Auto fan has always functioned like this.

How do y'all's transition from high to low or vise versa? Off then back on, or never quits running during the switch?

[RvBill3]

Mine switches from high to low just like you described-turns off momentarily while compressor stays on

[BigJohnD]

Thanks RvBill3. Good to know. This is the first one I've seen operate like that, but, it's the first time I've had the new Dometic single zone digital t-stat too. Always had the duotherm analog, Coleman Mach or Duotherm dual zone comfort control center, which all work a shade different than this one.

Just wish the single zone would display set temp AND actual temp while it's running. Doesn't make much sense the way it's set up. If the unit is off, press up or down and you get room temp. Once running, you can only rely on another thermometer as it will only show set temp.

Mike & Molly, hope you got the feedback you were looking for.

[Mike & Molly]

Answered all my questions,,,,