Bought Mitsubishi AC ( Not Mr Slim)

[jasper1]

just installed this heavy duty 1.5T split ac. Pulled the vacuum in line set as well. Air throw is good, but i am little bit skeptical about its cooling. Cooling is not bad but i was expecting a little more chilling air. Any one has an idea how to go about this issue?

thanks

[saad_farooq]

Folks,

Does anybody have an experience of using Haier's DC inverter based 1.5 ton split AC which costs about Rs.99,000/- (Haier HSU-18RK03 R2 (SDB) 1.5 Ton Split AC in Pakistan)? They claim its rated current is about 4.6A (whereas Mitsubishi and most others have more than 8 A). ' + docTitle + titleAdd + 'Haier PK
Sounds interesting? You can get a good 1.5 ton split for 40k to about 58k but that will give you a monthly bill of approx. Rs.7,500/- (assuming we are able to get about 12 hours electricity in Lahore) whereas the Haier 1.5 ton @ Rs.99,000/- will give you monthly bill of about Rs.3,500/- (saving of about Rs.4000 per month). This will take about 15 months (3 years) to recover you back Rs.60,000 (assuming 5 months per year operation).
Comments/suggestions?

[whiteangel]

DC Inverter gives you saving, but only under certain conditions in which the compressor is running on partial load. If the compressor is working on full load, then the saving will be significantly less.

From where did you get the figure of 4.6A?

[saad_farooq]

DC Inverter gives you saving, but only under certain conditions in which the compressor is running on partial load. If the compressor is working on full load, then the saving will be significantly less.

From where did you get the figure of 4.6A?

From the specifications tab on this link:
' + docTitle + titleAdd + 'Haier PK
see attached screenshot

[hasooboy]

Whats the price of haier dc ac it would be good if we can manually select a specific running Watt then it will easily run on generator?

Any one know what would be it's starting load?

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[hasooboy]

Folks,

Does anybody have an experience of using Haier's DC inverter based 1.5 ton split AC which costs about Rs.99,000/- (Haier HSU-18RK03 R2 (SDB) 1.5 Ton Split AC in Pakistan)? They claim its rated current is about 4.6A (whereas Mitsubishi and most others have more than 8 A). ' + docTitle + titleAdd + 'Haier PK
Sounds interesting? You can get a good 1.5 ton split for 40k to about 58k but that will give you a monthly bill of approx. Rs.7,500/- (assuming we are able to get about 12 hours electricity in Lahore) whereas the Haier 1.5 ton @ Rs.99,000/- will give you monthly bill of about Rs.3,500/- (saving of about Rs.4000 per month). This will take about 15 months (3 years) to recover you back Rs.60,000 (assuming 5 months per year operation).
Comments/suggestions?

Panasonic is also giving inverter bases ac they are cheaper I think?

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[baqai]

i bought the same model last year for 58k i LOVE it ... and you are going to love it too ....

[gttx]

Acson inverter is for 115k our also has heating option

Consumption is same around 4amps for 1'5 tons

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[saad_farooq]

i bought the same model last year for 58k i LOVE it ... and you are going to love it too ....

Did you buy Panasonic inverter based split for Rs.58k? what is the running current for that and can you upload some pics and/or model number?

[saad_farooq]

Acson inverter is for 115k our also has heating option

Consumption is same around 4amps for 1'5 tons

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I think @whiteangel has a point that the saving is for partial load only and since here we might have electricity in alternate hours only (currently about 13-14 hours loadshedding in Lahore) so I think its not prudent enough to go for an expensive inverter based AC for nearly 115k (Acson) when you are normally going to run it at full load whenever it is running. a Mitsubishi at about 58k using about 8A will be good enough too. The inverter based will be good I think if a 1.5 ton is used for a smaller room (say 12 x 15 feet) and not run at full load. Comments?

[whiteangel]

From the specifications tab on this link:
' + docTitle + titleAdd + 'Haier PK
see attached screenshot

Cooling capacity in the specification is 500-5600 BTU which is quite low. A 1.5 ton AC has a cooling capacity of 18000 BTU. Secondly the max cooling watts are listed as 2170. Convert that into Amps and 2170 watts /220 volts = 9.86Amps. I don't see from where they got the figure of 4.6 Amps. I think 4.6Amps is the lowest amperage. The specification table does not specify if this is the minimum or maximum. Also take a look at the heating Amps 1,220,50 :o

Nothing in this specification table makes sense.

[compaq9211]

Inverter based air conditioner will save electricity(reduce input amps) when they are used continuously and NOT in an 1 hour ON - 1 hour OFF cycle(Electricity there - Electricity NOT there).
During the temperature pull down of a room(to the set temperature) an inverter based air conditioner might pull more amps compared to a similar BTU/hr size non-inverter based air conditioner.
Room temperature ~30C, set temperature 16C. Gree non-inverter 1-ton was pulling 5 amps. Similar environment Acson inverter 1-ton went to 7 amps.
The saving starts when the inverter based air-conditioner senses the room temperature is getting close to the set temperature, here it will gradually reduce the r.p.m. of its compressor and adjust its electronic expansion valve to closely maintain the set temperature. This in turn reduces the ampere input and thus saving of electricity.

For those interested in heat-pump models(air conditioner with heating option) do know that during the heating cycle your indoor unit along with the copper piping might be running at 600 psi pressure!!! Please read all the safety instructions with your heat pump model and follow them! Don't listen to the a.c. guy saying "sir chalta hae, koi masla nahin hae".
For reference a car tyre contains about 30 psi of pressure and a lot of us have seen and heard when they go poof!

Power = Volts x Ampere, P = V x I. The answer is in VA(volt-amps) or W(watts).
For Inductive load such as motor, fan, compressor use VA.
For Resistive load such as halogen bulbs, rod type heater use Watts.
For converting VA to W of an inductive load, multiply the VA by Power factor. When the Power factor is unknown use 0.8 for an approximate answer.

[saad_farooq]

Inverter based air conditioner will save electricity(reduce input amps) when they are used continuously and NOT in an 1 hour ON - 1 hour OFF cycle(Electricity there - Electricity NOT there).
During the temperature pull down of a room(to the set temperature) an inverter based air conditioner might pull more amps compared to a similar BTU/hr size non-inverter based air conditioner.
Room temperature ~30C, set temperature 16C. Gree non-inverter 1-ton was pulling 5 amps. Similar environment Acson inverter 1-ton went to 7 amps.
The saving starts when the inverter based air-conditioner senses the room temperature is getting close to the set temperature, here it will gradually reduce the r.p.m. of its compressor and adjust its electronic expansion valve to closely maintain the set temperature. This in turn reduces the ampere input and thus saving of electricity.

For those interested in heat-pump models(air conditioner with heating option) do know that during the heating cycle your indoor unit along with the copper piping might be running at 600 psi pressure!!! Please read all the safety instructions with your heat pump model and follow them! Don't listen to the a.c. guy saying "sir chalta hae, koi masla nahin hae".
For reference a car tyre contains about 30 psi of pressure and a lot of us have seen and heard when they go poof!

Power = Volts x Ampere, P = V x I. The answer is in VA(volt-amps) or W(watts).
For Inductive load such as motor, fan, compressor use VA.
For Resistive load such as halogen bulbs, rod type heater use Watts.
For converting VA to W of an inductive load, multiply the VA by Power factor. When the Power factor is unknown use 0.8 for an approximate answer.

@compaq9211 spot on. Can you please guide me in an issue. I bought a Mitsubishi heavy Industries 1.5ton split in 2010. Unfortunately at that time I got it installed by a desi technician. The room size is about 16X12 on first floor with direct sunlight above it and on two walls. In the three years I have observed that even if I set temperature at 27 degree it does attain that temperature even after running continuously for more than 3 hours. Do you think there is an issue of gas leakage and if yes then how should I proceed in getting the optimum gas pressure? Am asking since I have heard different qualities of gas are available i.e. American etc. The refrigerant is R22.

[compaq9211]

to Saad,
Clean the filters of indoor unit, use air blower to clean out the fins of indoor and outdoor unit; be careful not to touch the fins, they are very easy to bend. Run your air conditioner, when the compressor turns ON, wait 1 minute, measure the temperature of air going into the indoor unit(at the top of indoor unit, from where you can see the air filter), also measure the temperature of cool air coming out of the indoor unit. A difference of 8C and above is what I remember a good difference. For e.g. your measured temperature of air-in is 30C and air-out is 20C, difference 10C. Check and tell.

These splits that we normally use are "critically charged" units. Their charging is based on the Weight of the refrigerant/gas rather than pressure. Physics say Pressure is directly proportional to temperature, so when temperature is high pressure is high and vice versa. Therefore the correct amount of refrigerant is filled in these units by weighing them. Charging by pressure is possible but that requires temperature measurements, pressure measurements(measuring high side pressure mostly not possible on mini-split since there is no service valve port(place to put gauges) on high side), pressure-temperature chart and lastly is not the suggested method of charging for these mini-splits.

First check with soap water if there is leakage at the flare-joints. If no leakage, I would suggest taking the old refrigerant completely out; vacuum and fill again by weight (standard as printed on outdoor unit + compensation for long copper pipes if needed).

Standard weight of the refrigerant is stated on the outdoor unit. Your instruction manual will tell you how much length of copper tube is al-right with the pre-filled refrigerant. Over the standard length(normally 7.5 meter) you will have to add extra refrigerant at the rate of 20gm/meter(might differ in your manual). Use a digital scale, put the cylinder on the scale, read the value, let the refrigerant in the air conditioner until the weight reduces by the amount required.

MHI air conditioners are very good unit, their current input is quite low and the cooling is strong. Their only drawback is that beefy industrial looks!
Has your unit been not performing well since installation or after sometime of installation?

R-22 is ozone-destroyer, please try your best not to release it in air!

[hasooboy]

^^ I don't know why they always released little bit of them to check the pressure in the compressor there should be any other way around, it really harm full for ozone.

Why they don't use cfc gas in them?

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[compaq9211]

They(the a.c. fitters) release a bit of refrigerant to flush the lines. This was the practise many many many years back. Now it is illegal almost everywhere to release refrigerant in the air. And this method never really clean the lines from air and moisture.
Other alternates are available but are expensive. And here, mostly the first priority is price.

[whiteangel]

^^ I don't know why they always released little bit of them to check the pressure in the compressor there should be any other way around, it really harm full for ozone.

Why they don't use cfc gas in them?

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This is Pakistan, you can release anything into the atmosphere and dump any liquid in the drain because Pakistan is stuck in the "Kuch nahi hota" mentality.

R22 is being phased out all over the world. The rest of the world has already moved on but in Pakistan every air conditioner whether its manufactured or imported is still on R22 with the exception of inverter based ACs.

[mowaisajaz]

I am using Haier 18lko3e8a 1.5 ton .Cooiling is great it takes 1 min to cool down my room .my room is on 1st floor.
I am very satisfy with it but today i got gas refiiled from haier and they have given me 6 month gas leakage warranty..I bought it last year in july from metro islamabad In Rps 41000 + 1500 installation charges.same unit was in 45000 in market at that time.
Haier is also very good brand.

[hasooboy]

Outdoor unit pipe is making Ice just from where it leaves the nozzle any solution? Will post the picture soon

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[mowaisajaz]

From very first day when ever i turn on my ac it makes some gas whistling sound in indoor unit this sound only last for 5 to 8 sec but my concern is gas leakage..technician told me it is normal but if it is normal then why my other ac is quite on startup..
Do any body have this type of sound on startup?