Above 10 years ....

Pana.

You notice the white powder like on the filter. Similar to yours.

Hopefully he didnt pick up the theory from this forum.

Most likely he couldnt find a AC man during this lockdown plus the hot weather and decided to diy

Of all the home diy, electrical wiring is the most dangerous. To many who has knowledge and experience, it is simple.

I have known people falling down from roof/ladder trying to check a faulty odu or repair a roof leak .... because of wrong footing or slippery tiles after raining.

Many amateur think that to off the switch is ok oredi.

You must have reasons why you selected Sharp. Tell us why ?

For non invertor, once the preset temp is achieved the compressor will cut-off and the indoor blower speed will reduce. Once the room temp increases, the compressor kick start again and the fan speed increases.

For invertor (I dont own a unit), it should work the same way, except it wont cut-off but reduced operation to maintain the set temperature.

The way how non invertor operates increases electricity usage as compared to invertor ...that is what many people claimed.

This post has been edited by mini orchard: Jun 6 2021, 10:17 PM

Sori I dont own a unit. Just want to know why you select Sharp.

Ms CEO will come to help you soon.

I only use 1 brand for the house. Easy for trouble shoot and not many technicians know various brands when non common problem arises....merely relying on trial and error.

Buy a digital thermometer and put in your room to monitor.

You may set at 16 but not all areas inside the room is 16. The area nearest to the ac will reach 16 quicker. Not all cool air from blower reaches the other end of the room. Some are recirculated back to the coil and repeats. That is when the sensor picks up the air temperature and rev down the fan speed.

You may be surprised if the fan rev down when the thermometer shows 18 to 20.

Sometimes a faulty sensor can also be the cause.

This post has been edited by mini orchard: Jun 7 2021, 10:03 AM

When was the last the outdoor unit is cleaned ? That can also affect the cut off if the coil is dirty.

If is quite sometime, then service the complete set.

This post has been edited by mini orchard: Jun 7 2021, 01:53 PM

B4 washing the ODU, please make sure you have a proper place to stand, otherwise you might have a missed footing and fall.

Off the switch to the AC.

Use a strong pressure hose to spray water at the coil. That is all. No chemical needed. The pressure is enough to wash all the dirt down.

I use garden hose for my IDU and ODU units and is 40m long (special order) so I cant comment I think is also depends how much dirt is trapped.

Give it a try. You may need to refill few times.

My iDU cleaning bag




This post has been edited by mini orchard: Jun 7 2021, 04:32 PM

There are various ways to clean depending on one preference.

What I normally does is to remove the casing and use a firm art brush to 'scrub' the drain pan and the mouth area. Then pour hot water to remove the gel. Once is clean, use normal water to test the flow. It should be ok.

I dont use chemical to clean ac. Good water pressure will do.

You need to use small brush to access tight corners

Cant avoid the gel. Is normal 'waste' product of using ac like the clogged filters.

If you know the seller personally (otherwise dont), you can get a good used AC. Since MCO last year, many offices and shops closed down and start selling whatever to reduce losses.

Some are quite new if you know which model. If is Pana, for exampIe, I dont mind buying since am using the brand for a long time and know the reliability is not an issue.

I like to advise again that it is not recommended to install a high hp in a large place. Two smaller hp will be better option if space for compressor is not an issue. It gives faster and evenly cooling and once is achieved, turn off 1 unit.

That is the reason why your neighbour suggested a 2.5hp. He could have felt the cooling is slow for the large space.

This post has been edited by mini orchard: Jun 9 2021, 08:45 AM

Some brands are easy but still need few washing to get it right.

Dont do it if you are not sure. Garden hose will do 90% of removing the dirt.

Pana generally a reliable brand.

Checked for those advert nailed on trees or lamp post. MCO not sure they want to do but mine in Subang sure no ...takut saman.

They know they cant do, so not necessary to answer

Almost all good brands are out of stock. Try your luck online.