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Tried to PM you but got a message that your account is restricted and you were not receiving any PM.

Anyways, for your benefit as well as others who may be interested , you can contact Madhav (mobile: +91 76708-84445) from Mitsubishi Electric, Marketing Office, Hyderabad.

5 years is the standard warranty on the compressor. I do not quite remember, but PCB is probably 1 year warranty. However, you can reconfirm it.

Thanks! Any pricing clues, specifically the 3 ton model, please revert in case you go for any of it.
While that can help if mounted on the shorter side wall of the area (rectangle), unfortunately my builder has given provision only on the longer sides wall. I am beginning to reconsider the possibility of shifting the point, to the shorter side, as it is not that far from the current location. While the copper piping can be extended (via false ceiling) and electrical point can be shifted, the one challenge I see is connecting the water drainage from the IDU, to the existing drainage provision, on the org. point. I can't drill a hole in the wall to just let it out and can't route it via false ceiling as the relatively small amount of condensed water cannot climb up against gravity.

Options?

All Inverter AC vary speed, hence power consumption. It is just that Daikin mentions the range, while LG gives the maximum rating. In my case the LG Dual Inverter varies the power consumption from maximum down to less than 10% of the rated value. It all depends on how hard the AC has to work to cool the room.

On the whole Daikin have the least power consumption, but LG the best after sales and warranty packages. The LG 5 years extended warranty takes care of all parts and labour as well as two services a year.

What you have to bear in mind is that practically every one has had a MB failure in an inverter AC, and when that happens you are out of between 6K and 15K if it is not covered. So in my opinion it is a trade off between marginal power saving and maintenance cost (of the extended warranty).

@ARoy; this is called the turn down ratio. Normally the AC can go into an overdrive. So the turn down ratio is calculated from 100%. Anything more that 5 is considered good.

Folks, I am facing a peculiar problem. I have a 2-ton Voltas Vertis Split AC. When I start it, the ODU-fan/compressor shuts off after 3-5 seconds and never starts again. Indoor unit works for some time & then red and yellow lights start blinking. The PCB, contactor are okay as per the technicians. Suggestions welcome.

Has happened to me when the capacitor in the ODU malfunctioned. The symptoms were not exactly the same in my Daikin but ODU failed to start beyond initial 5-10s. It also caused my main board MCB to trip as I saw power consumption shooting up beyond 3000W when the ac is rated at about 1800W.

Thanks for your reply. Capacitor was also replaced, but the issue persists. Three guys said contactor needs to be replaced which is wrong diagnosis. One guy said compressor needs to be replaced. I am still searching for a proper diagnosis. Any reliable technician in Pune?

All portable ACs are fully hermetical compressors. There is hardly any scope for repairs in such compressors. Before taking a decisions to replace compressors, ask service technician to check following:

- Did they carried out general cleaning of evaporator and condenser ?
- Is AC tripping on low gas or high gas pressure ?
- Ask service person to cheek temperature sensor.
- If above check are done and all fine, then ask service person to replace TEV [Thermostatic expansion valve] as a last resort before going for compressor replacement.
- What are yellow and red light indicates as per instruction manual ?


Venkatesh.H :)

Thanks for your suggestions. I will have to find a genuine technician in Pune who could trouble shoot as per your points. Most of the guys I have come across are just there to make a quick buck. Pune folks please suggest someone.

I am surprised why no one had mentioned the fundamental service procedure.
You start with a clamp meter to check the current drawn. This will provide the clue as to where the fault may be. If the current is 150 % or more of the running current from the beginning, swap the capacitors. If still the same situation, your compressor may be faulty. There are other tests to finalize the diagnosis.



Sometimes, the ODU might start shedding the fins due to corrosion etc. In such cases the compressor will start normally and then slowly increase the current until the OLP (over load protector) trips.



Checking the temperature is pointless as the unit shuts down within seconds.

Suggestions were made basis less competence of service persons these days, who never held clamp meter in their life time. They have very very limited knowledge in refrigeration cycle and troubleshooting. Max they do is replacing parts without justification.

Checking of temperature sensor is very essential as these sensors are responsible for starting and stopping of AC compressors when desired temperature is achieved. If temperature sensor is defective, then it is bound to run compressor on short cycling, tripping eventually in few seconds and giving indication for many other doubts.


Venkatesh.H :)

Thanks Aroy for the response. For same rated capacity - 1 ton - and similar maximum power consumption of approx 980w (for 5 star) LG has a lower minimum cooling capacity. While for Daikin minimum is 50% of rated capacity, for LG it is 15% of rated capacity. So for low to medium cooling loads, the LG machine has potential for better power saving.


For reasons of better power saving and better service, we have settled for LG dual inverter.

A query to AC Experts.
My AC dealer said that some companies reject warranty if we use Stabilizer for inverter AC so I have not connected stabilizers for it.
Yesterday night there was huge thunder/lightning and I'm scared that it might damage my AC. For all other equipment at home stabilizer is present. I do have a bad experience where i lost the solar plant during 2018 thunderstorm (Solar Inverters IC got fried up), though it was fixed for free (warranty replacement) i had to use domestic electricity which burns the pocket (almost 3 weeks due to flood calamity here in Kerala ).

The question is can i use good quality Surge/Spike protector. If yes, which would is recommended.

You can use Belkin Surge Arrester series sockets. Or buy a few MOV ( details in my earlier messages) and fix them.



It is odd that some people claim that there will be no warranty if you don't use a stabilizer and some say that it is the other way.

I think you misunderstood, Daikin has the lowest power consumption 822 watt for a 1 ton, but daikin can run harder upto 1.1 ton+ for 15 min during which it may consume higher. It can also run at around .3 ton at lowest speed.