How To Set Ac Thermostat Efficiently In An Alto??

[Mikee]

Im using Brand new Maruti Alto. My doubt is that should we always use the AC temperature regulator knob in the maximum coolest position even we dont want that much cool inside the car? When we fix it some way between the coolest and hottest position is that mean the AC compressor is working for much lesser time or just mixing hot air from the heater with cool air without affecting the compressor running time?

[Mikee]

Any idea Pls...

[Sylvi]

Im using Brand new Maruti Alto. My doubt is that should we always use the AC temperature regulator knob in the maximum coolest position even we dont want that much cool inside the car? When we fix it some way between the coolest and hottest position is that mean the AC compressor is working for much lesser time or just mixing hot air from the heater with cool air without affecting the compressor running time?

'Mikee',

You have a new Maruti vehicle it is best for you to go to their repair garage and consult the engineer there because you have Guarantee from the agents.

Maruti spares and work shop 218, Kitulwatte road Colombo 08 . contact number 2674776 to 779

I don’t think hot air get mixed with cold air.

Sylvi Wijesinghe.

[terrabytetango]

Good grief man, just set the temp to max, and then turn it back till you're comfy. Adjusting your a/c isn't rocket science.

[Mikee]

Thanks guys for ur replies.. but nobody answered my question. It may not be rocket science but if anybody has an accurate answer based on correct technical knowledge pls post.

[Sylvi]

Thanks guys for ur replies.. but nobody answered my question. It may not be rocket science but if anybody has an accurate answer based on correct technical knowledge pls post.

'Mikee',

I am not an AC technician to my knowledge, when the A/C is on there is no way that hot air to get mix with cool air.

According to your setting of the A/C controller thermostat temperature the compressor will come on and go off as the thermostat reaches its pre set position.

Then the cabin of your car will have the pre set temperature until the temperature drops. Then again A/C compressor will come on and give the correct pre set temperature of the cabin

Thermostat will control the pre set temperature accordingly.You have to set the most comfortable position of your car cabin temperature according to your requirement.

The temperature control depends on the number of people travelling inside of your car cabin.

I too use a Maruti I adjust the temperature to my requirement.

Above is my experience of an A/C control of an Automobile. There is more Temperature control advanced methods in expensive Automobiles.

Sylvi Wijesinghe.

[anjulau78]

Try this,

This is seems to be maka-bass solution. But try this

open the engine room hood, start the engine, set temp knob to maximum cool, set the blower fan to 3rd position, turn on the A/C, ( when you switch on the A/C you will notice the the compressor clutch engaging ) leave the car for 2-3 minutes. Then slowly turn the temp knob to middle position. At that time if you notify, the compressor is de-engaging according to the temp knob adjustment, and then your car is probably has an A/C temp controller.

Mean time the A/C compressor will de-engage by itself due to reaching its cutoff cool. You have to avoid this scenario.

Please let me know the result as I am also driveling an Alto-K10. Normally I switch off the A/C switch when I feel too cold. J

my previous experiences

Corolla KE72 DX Wagon: it does not has A/C switch, it only has an A/C knob in addition to the Temperature control lever. When it set to the maximum cool position, the compressor start to engage, and it is responding according to the A/C knob.

Corolla EE102: it only has two switches called A/C & Econ, you have only two cooling options. The econ mode is bit less cooler than A/C mode.

Edited January 31, 2012 by anjulau78

[Amila G]

Hey Mikee,

I too had the sane question as you about my corolla 110. It's temp. knob was not working and the ac was always running at the coolest setting.

But when I said this to my ac technician, he said that the temperature of the ac is not adjustable and the cooling is adjusted by mixing the hot air from the engine with the cold air from the AC . Further he showed me a small valve that is used to do the mixing and said it was broken in mine, so the temp is not adjustable.

He also said only some new cars has the ability to adjust the temp properly through the ac. I doubt a maruti will have that,

[varunatech]

Hey Mikee,

I too had the sane question as you about my corolla 110. It's temp. knob was not working and the ac was always running at the coolest setting.

But when I said this to my ac technician, he said that the temperature of the ac is not adjustable and the cooling is adjusted by mixing the hot air from the engine with the cold air from the AC . Further he showed me a small valve that is used to do the mixing and said it was broken in mine, so the temp is not adjustable.

He also said only some new cars has the ability to adjust the temp properly through the ac. I doubt a maruti will have that,

I am answering two questions here......

In Maruti and also in many entry level cars it has Thermostat controlled ACs. And as we do expect they do cool the cabin. Like a refrigerator when the desired temp is achieved the thermostat cut off the circuit, in this case disengage the compressure clutch. There is no mixing of Hot Air or taking a hot water path from the water cool system.

In some cars there are systems to heat the cabin, (apart from heating the wind shields) this is to apply in Winter. In such systems Hot Air or Hot Water is taken close to the Blower unit inside the cabin. Usually these vehicles has the so called "Climate Control". Where advanced versions control the climate inside the car rather than just cooling the interior. When you are in Nuwara Eliya in the morning hours, you would like the cabin to be warmed, don't you.

Above is the basic concept, not all the working details...............

[Sylvi]

'anjulau78',

Don't say your method is Maka bass method.

It is your method of the operation of A/C system.

Good to have different opinion.

Edited January 31, 2012 by Sylvi

[Sylvi]

Hey Mikee,

I too had the sane question as you about my corolla 110. It's temp. knob was not working and the ac was always running at the coolest setting.

But when I said this to my ac technician, he said that the temperature of the ac is not adjustable and the cooling is adjusted by mixing the hot air from the engine with the cold air from the AC . Further he showed me a small valve that is used to do the mixing and said it was broken in mine, so the temp is not adjustable.

He also said only some new cars has the ability to adjust the temp properly through the ac. I doubt a maruti will have that,

Your explanation there some truth on your reply. According to my Knowlege.

Sylvi Wijesinghe.

[Sylvi]

I am answering two questions here......

In Maruti and also in many entry level cars it has Thermostat controlled ACs. And as we do expect they do cool the cabin. Like a refrigerator when the desired temp is achieved the thermostat cut off the circuit, in this case disengage the compressure clutch. There is no mixing of Hot Air or taking a hot water path from the water cool system.

In some cars there are systems to heat the cabin, (apart from heating the wind shields) this is to apply in Winter. In such systems Hot Air or Hot Water is taken close to the Blower unit inside the cabin. Usually these vehicles has the so called "Climate Control". Where advanced versions control the climate inside the car rather than just cooling the interior. When you are in Nuwara Eliya in the morning hours, you would like the cabin to be warmed, don't you.

Above is the basic concept, not all the working details...............

Yes. what your post explains in hot weather and cold weather how the cabin temperature is controled.

Sylvi Wijesinghe.

[The Don]

Thanks guys for ur replies.. but nobody answered my question. It may not be rocket science but if anybody has an accurate answer based on correct technical knowledge pls post.

I believe the question has been answered in a number of different ways. Basically it isn't rocket science and you are complicating a simple concept.

Since your car does not have a temperature controlled AC sometimes referred to as climate control, you have to regulate the temperature using the blower and the AC temperature control. You can get an AC technician to adjust the AC thermostat (which is separate to the temperature control knob) if you think the AC is too strong and what this will do is to cause the compressor clutch to disengage at a lower temperature. This temperature is measured at the evaporator so is not the same as cabin temperature. The primary focus of this thermostat is to prevent frosting on the evaporator.

Edited January 31, 2012 by The Don

[maheshw]

^{You can get an AC technician to adjust the AC thermostat (which is separate to the temperature control knob) if you think the AC is too strong and what this will do is to cause the compressor clutch to disengage at a lower temperature.}

^{as i know once this is adjusted to a high cool level, your compressor is getting on & off in a short time because of the signals it getting from the evaporator which on under your cabin.}

[Sylvi]

Members,

I will give a A/C professional Mr. Rohan perera of CRP engineering who will answer to the A/C control system if any member wants clarification on A/C matters can contact him he will give professional advice.Mobile 0777393608.

Sylvi Wijesinghe.

[c1nder]

I had a old Toyota DX Wagon CE96 and in that if you switch the AC on and move the temp slider to the hot side the heater did engage with the AC Clutch still operating. So I used to switch of the AC when it's too cold.

[Mikee]

Members,

I will give a A/C professional Mr. Rohan perera of CRP engineering who will answer to the A/C control system if any member wants clarification on A/C matters can contact him he will give professional advice.Mobile 0777393608.

Sylvi Wijesinghe.

Members,

I will give a A/C professional Mr. Rohan perera of CRP engineering who will answer to the A/C control system if any member wants clarification on A/C matters can contact him he will give professional advice.Mobile 0777393608.

Sylvi Wijesinghe.

Thank you

[Mikee]

I had a old Toyota DX Wagon CE96 and in that if you switch the AC on and move the temp slider to the hot side the heater did engage with the AC Clutch still operating. So I used to switch of the AC when it's too cold.

I had a old Toyota DX Wagon CE96 and in that if you switch the AC on and move the temp slider to the hot side the heater did engage with the AC Clutch still operating. So I used to switch of the AC when it's too cold.

That's why i wanted to know about whats happening in alto. I have heard both systems.