Air Conditioning Temperature/Humidity sensor

aero3113

I was cleaning my basement and came across this sensor extension for the air conditioner. Did anyone relocate their sensor? Right now mine is located at the filter on the unit under the V birth. Is that the best place? Or should I use this extension and put it somewhere in the cabin?

Liberty44140

I had thought they were supposed to be at the filter on the intake in order to measure the air temp going in to the unit. Maybe there are some applications where it needs to be measured elsewhere?

Spyderweb

I think I had moved mine behind the air intake screen.  Was previously on the ac unit itself. 

Ian

I was thinking of getting one to get the cabin space temp vs return.

aero3113

@ian and @Spyderweb , I would think that makes more sense but there must be a reason they have it on the unit 🤷🏻‍♂️.

MarkB

aero3113 said:

@ian and @Spyderweb , I would think that makes more sense but there must be a reason they have it on the unit 🤷🏻‍♂️.

My guess is there's simply too many permutations to take into consideration, if they are to have the unit amenable to all configurations ... where do they locate the AC, and where is the cabin relative to that ... another wire to fish, more work .... just easier to have it on the air intake.

I don't know why they don't just put it on the control panel ... and turn it into an ordinary thermostat??

I did have to move mine a bit ... it was far too cold close to the AC, and throwing the temperature measurement off. If you have the extension, I'd certainly try it.

YYZRC

I believe there is a temp sensor in the thermostat panel and it is activated by simply disconnecting the remote temp sensor. 

LaRea

Putting a sensor in the control panel would probably be too unreliable.  Direct sunlight would screw up the readings.  Cruisair says:

"Ideally, the sensor should be located in a reliable return-air stream moving from the room to be controlled to the air conditioner it is plugged into. Locating the sensor on the back of the air conditioner coil is not ideal and can result in false readings for several reasons. It is best to locate the sensor just inside of a return-air grille or passage."

Ian

I agree in the controller is not ideal due to latent heat from the electronics. Problem with the approach of an RA sensor is I think the return air vent being on the port side of the V has a tendency to draw air across from the supply on the starboard side which in our case has the vanes adjusted to direct air across the dining area to the aft berth. The controller above the port side cupboard shows the temperature but it really isn’t what it shows, we have ours set to 67/68 but it’s not that cold at the controller. I need to play more with the offset setting.