It won't change the current but it might change the KWH and lower your bill.

then how does the cooling changes in the room with lower thermostat settings ?

is it just because that at lower thermostat settings, the fan speed becomes higher to force more air per unit time into the room from conditioner air outlet ? i.e. what is actually causing the conditioner to provide cooler air with lower thermostat setting?

i know that above question is more related to H.V.A.C ( not High Voltage Alternating Current but Heating,Ventillation and Air Conditioning ) field, however answer will be appreciated if any.

Unless you have a very sophisticated unit, the thermostat simply cycles the compressor on and off. The hotter the room the longer it runs, conversely if the room is cooler it runs less time, if the amount of BTUs entering the room is higher than the rating of your unit the compressor will run 100% of the time and consume the maximum amount of power.

Some very efficient (and more costly) units have a controller that varies the speed of the compressor and fan to try and match the output of the unit to the amount of heat in the room.

The refrigeration cycle is also sensitive to the temperature extremes under which it operates, when it is very hot outside (it's 103F where I am) the air blowing over the condenser coil is also very hot and can remove less heat from the refrigerant so the compressor runs longer.

The induction motor driving the compressor is also affected by the temperature two ways, first the windings run hotter and therefore may trip an internal temperature protector to operate and cut off or limit the current to allow the windings to cool down a bit, secondly most utilities lower their overall system voltage which makes the motor draw more current to maintain it's rated load and can further lower the unit's rating by the square of the voltage variance; i.e., a 3% lower voltage yields an overall 9% less cooling capacity.

I doubt that your unit draws over 2.5 times its rated current constantly. If so then either the voltage is very low or the unit is going to fail soon, something isn't quite right.

"Does the current drawn by an air conditioner change with the thermostat/temperature setting of the air conditioner?"

Yes, if it causes the compressor to kick on. When the compressor cycles on you will pull more amps and the A/C will begin cooling. Much of the time only the fan is running.

Are you still pulling 23 amps referenced in your previous post?

"My room air conditioner (1.5ton, 9.6A,220VAC single phase) is supplied through a C20 i.e 20A MCB. When the air conditioner starts, the breaker trips after some time. I have noted the current of the air conditioner, and it takes 23A. What can be the problem? I have checked the cable and wiring, everything is ok. Is it a problem of the conditioner compressor?"

If so your compressor may be failing.

compressor draws high current on each start up because it has motor in it and is a normal thing. i am talking about temperature change VS compressor current in steady state situation ? no relation of this post to the previous one.tanx

Sorry I'm not clear on "temperature change VS compressor current in steady state situation." By temp. change are you still referring to the thermostat?

Is this part of your quest to become guru?

Get a service engineer, if there is a fault it's highly unlikely you will be able to repair it.