With all the hullah-bullah behind inverter ACs and spending hours and hours reading reviews about inverter AC vs conventional AC, I purchased the 1.1T Sharp AH-XP13PHT from AC Bazaar in Chennai on March 1st and installed it on 12th March.
I started using the AC from April 1st and immediately found something weird. My older carrier AC, used to be make me shiver when I kept it at 26C, but when I keep the AC temp at 24C, it doesn't cool the room enough and I sweat sometimes, not sweat dripping but feel stuffy.
Primary Problem, the AC doesn't cool enough and the ODU makes a wierd noise when it is running at full power trying to cool the room.
Other issues -
1. every one hour the IDU fan stops completely for a min or so and it restarts after that.
2. The AC IDU fan speed varied drastically its not uniform. when I keep the AC fan in Auto mode, the IDU fan speed suddenly increases to the max and then drops to more quieter speed within few seconds, this happens at random, I am not able to find a pattern.
So I called up AC Bazaar in Chennai, from where I had purchased the unit. Since they would undertake both the installation and service. (On hindsight, what was I smoking when they said they would take care of it and not the manufacturer
)
I did notice during the installation that they did not use a vacuum pump to pump out the gas before releasing it from the ODU.
The technician comes up on 12/04 and checks the cooling, accepts that the cooling is less than its needs to be. Also the peak amps pulled when the AC was running at max was 7A, but the max input Amps should be 9.1 A. The diagnosis was that the gas in the AC might be less and so he has to come back with the gas and vacuum gauge to fill it.
On 04/18, the same technician came in and initially checked the Amps pulled and the air throw temperature. The Amps pulled was again 7A and min air throw temp was 24C when the AC was set to 16C. So he vacuumed the pipe for an hour using the vacuum machine and filled the R410a gas (approx 2Kg as per the technician's judgement) and rechecked, this time the max Amp pulled was 8A and air throw temp was 20C, when AC was set to 16C.
He called up his manager in the service station and I was informed that there might be a block in the caliper tube and so the AC - both IDU and ODU - needs to be bought to the service center to flush the caliper tubes with di-nitrogen gas (I might have misheard it). Also the weird noise in the ODU might be due to some oil in the compressor unit not fully lubricating it.
04/21 - Another senior technician comes to collect the unit - I was not at home this time, I had to be at work - he suggests that he will flush the gas once again and check once again before collecting the unit. Since I was not around he said that now the air throw temperature was nearing 12C and all issues have been sorted out. I asked to show my mother who was at home at that time, the temperature reading of 12C before leaving, but he couldnt completely show the temp, since he claimed that by the time the meter read 12C and he showed it to my mother the temperature has increased.
I have now spoken to the senior manager and he told me that he wanted to have the unit to test and flush it in the service center. I have asked him to come in by next monday 04/28 to collect the unit.
Now With that history here is what I wanted to know being a noob in the AC arena -
1. Is the inverter ODU supposed to make weird mixer like noise when it is running at peak load?
2. Is it advisable to send the AC unit to the service center for servicing? I have never heard of such di-nitrogen flushing or compressor oil change/service (for the ODU noise)
3. Have I been sold a Lemon? 40K down the drain??
4. Or Am I over-reacting unnecessarily and everything will fall in place once the fault is rectified in the service center.
I sincerely request the AC gurus and pandits here for their opinion and help on this matter, any help on this matter will be deeply and truly appreciated.
I started using the AC from April 1st and immediately found something weird. My older carrier AC, used to be make me shiver when I kept it at 26C, but when I keep the AC temp at 24C, it doesn't cool the room enough and I sweat sometimes, not sweat dripping but feel stuffy.
Primary Problem, the AC doesn't cool enough and the ODU makes a wierd noise when it is running at full power trying to cool the room.
Other issues -
1. every one hour the IDU fan stops completely for a min or so and it restarts after that.
2. The AC IDU fan speed varied drastically its not uniform. when I keep the AC fan in Auto mode, the IDU fan speed suddenly increases to the max and then drops to more quieter speed within few seconds, this happens at random, I am not able to find a pattern.
So I called up AC Bazaar in Chennai, from where I had purchased the unit. Since they would undertake both the installation and service. (On hindsight, what was I smoking when they said they would take care of it and not the manufacturer
)I did notice during the installation that they did not use a vacuum pump to pump out the gas before releasing it from the ODU.
The technician comes up on 12/04 and checks the cooling, accepts that the cooling is less than its needs to be. Also the peak amps pulled when the AC was running at max was 7A, but the max input Amps should be 9.1 A. The diagnosis was that the gas in the AC might be less and so he has to come back with the gas and vacuum gauge to fill it.
On 04/18, the same technician came in and initially checked the Amps pulled and the air throw temperature. The Amps pulled was again 7A and min air throw temp was 24C when the AC was set to 16C. So he vacuumed the pipe for an hour using the vacuum machine and filled the R410a gas (approx 2Kg as per the technician's judgement) and rechecked, this time the max Amp pulled was 8A and air throw temp was 20C, when AC was set to 16C.
He called up his manager in the service station and I was informed that there might be a block in the caliper tube and so the AC - both IDU and ODU - needs to be bought to the service center to flush the caliper tubes with di-nitrogen gas (I might have misheard it). Also the weird noise in the ODU might be due to some oil in the compressor unit not fully lubricating it.
04/21 - Another senior technician comes to collect the unit - I was not at home this time, I had to be at work - he suggests that he will flush the gas once again and check once again before collecting the unit. Since I was not around he said that now the air throw temperature was nearing 12C and all issues have been sorted out. I asked to show my mother who was at home at that time, the temperature reading of 12C before leaving, but he couldnt completely show the temp, since he claimed that by the time the meter read 12C and he showed it to my mother the temperature has increased.
I have now spoken to the senior manager and he told me that he wanted to have the unit to test and flush it in the service center. I have asked him to come in by next monday 04/28 to collect the unit.
Now With that history here is what I wanted to know being a noob in the AC arena -
1. Is the inverter ODU supposed to make weird mixer like noise when it is running at peak load?
2. Is it advisable to send the AC unit to the service center for servicing? I have never heard of such di-nitrogen flushing or compressor oil change/service (for the ODU noise)
3. Have I been sold a Lemon? 40K down the drain??
4. Or Am I over-reacting unnecessarily and everything will fall in place once the fault is rectified in the service center.
I sincerely request the AC gurus and pandits here for their opinion and help on this matter, any help on this matter will be deeply and truly appreciated.
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