What I Learned About Air Cons

[donut88 1]

i wish to share what i have learned today about air con, so that you all will not kena cut throat by other dishonest air con guys.

my Toshiba Inverter aircon is leaking from the pipe that is near to the blower unit, so i called the Carrier coz they are the agent for Toshiba and my air con is still under warranty.

the Carrier guy came and inspected my air con. there's wrong with my air con. he cut open the plastic trunking and get to see the air pipes and insulations. He on my air con unit and true enough, the insulation is leaking. its condensation of water.

he explained that my unit is 13 000 BTU and its more powerful than 9000 BTU. i need to increase my fan speed each time i use. normally i only use 2 bars fan speed, which is too slow for all the cold air to come out from the pipe. 13000 BTU air con will have alot of cold air coming from the compressor. so fan speed too slow, the cold air cannot come out fast enough, it will become condense in the pipe and as a result, condensed water will leak out.

also he explained that the roller blower must be kept clean from dust and mold coz dust and mold affects the speed of the roller blower. it slows down the speed and blocks cold air from coming out. this will also cause condensation in the pipe and therefore it will leak out.

he explained that air con gas actually last forever. there is no need to do any top ups, UNLESS there's a leak somewhere.

so those who hire those air con guys to check yr air cons, please take note. i know alot of dishonest air con guys will purposely say there is a need to top up gas. and they just wayang wayang pump gas in. actually there is no new gas going in and you pay extra for it.

last but not least, to prevent mold from growing internally in the air con, each time u want to off the air con after a period of use, example night time u on air con to sleep, then morning wake up, want to off the air con. the best is to switch the mode to "Fan" and full blast it for 2 minutes. this is to blow out all the dampness inside the air con so that mold will not grow.

this is similar to yr car air con where the best practice before parking and switching off engine is to turn open the air con dents and full blast it so that mold will not grow inside the coil.

i must admit that so far i never call anyone to service my air con system coz it less than a year. still so new, so i stingy to pay for servicing.

after today's experience with the agent, i think i will ask them to service my air con. Carrier service is more expensive than outside, but they are the agent of Toshiba and Carrier and i can trust them. they won't run away.

the carrier guy even offer to service my air con FOC. he did alot of cleanings, vacunm, check compressor, check the temperature with a gadget. so impressive!!!

[Potluck 0]

Thanks for sharing. Yes indeed it's hard to find a honest plumber, air con technician..after reading so much horror stories.

[eiffel76 1]

ever happened to me...too much gas! the aircon will simply not be cold....so be careful abt gas topups...tat was my previous fuji electric...

im using mitsu electric inverter now...for the fan speed thing, i jus set to auto..and let the aircon unit do its work..

[phantphant 0]

Hi,

Anyone has any experience that your fan coil unit will have a blinking operation light whenever you turn on the power supply? The blinking light changes into a steady light under normal operations. In addition, the fan coil's operation light will turn into a steady "timer" light after I switch off the aircon. If I on it again and off again, then finally there will be no lights on the display LEDs...

My Toshiba, RASM10SKCV units all have these 2 symptoms. The aircon guy say that Toshiba aircons are all like that.....But I don't believe him....

[donut88 1]

Hi,

Anyone has any experience that your fan coil unit will have a blinking operation light whenever you turn on the power supply? The blinking light changes into a steady light under normal operations. In addition, the fan coil's operation light will turn into a steady "timer" light after I switch off the aircon. If I on it again and off again, then finally there will be no lights on the display LEDs...

My Toshiba, RASM10SKCV units all have these 2 symptoms. The aircon guy say that Toshiba aircons are all like that.....But I don't believe him....

you can call the Toshiba service ppl (which is Carrier themselves) for advise.... they can tell you exactly what's wrong.

[simpleguy80 0]

i wish to share what i have learned today about air con, so that you all will not kena cut throat by other dishonest air con guys.

my Toshiba Inverter aircon is leaking from the pipe that is near to the blower unit, so i called the Carrier coz they are the agent for Toshiba and my air con is still under warranty.

the Carrier guy came and inspected my air con. there's wrong with my air con. he cut open the plastic trunking and get to see the air pipes and insulations. He on my air con unit and true enough, the insulation is leaking. its condensation of water.

he explained that my unit is 13 000 BTU and its more powerful than 9000 BTU. i need to increase my fan speed each time i use. normally i only use 2 bars fan speed, which is too slow for all the cold air to come out from the pipe. 13000 BTU air con will have alot of cold air coming from the compressor. so fan speed too slow, the cold air cannot come out fast enough, it will become condense in the pipe and as a result, condensed water will leak out.

also he explained that the roller blower must be kept clean from dust and mold coz dust and mold affects the speed of the roller blower. it slows down the speed and blocks cold air from coming out. this will also cause condensation in the pipe and therefore it will leak out.

he explained that air con gas actually last forever. there is no need to do any top ups, UNLESS there's a leak somewhere.

so those who hire those air con guys to check yr air cons, please take note. i know alot of dishonest air con guys will purposely say there is a need to top up gas. and they just wayang wayang pump gas in. actually there is no new gas going in and you pay extra for it.

last but not least, to prevent mold from growing internally in the air con, each time u want to off the air con after a period of use, example night time u on air con to sleep, then morning wake up, want to off the air con. the best is to switch the mode to "Fan" and full blast it for 2 minutes. this is to blow out all the dampness inside the air con so that mold will not grow.

this is similar to yr car air con where the best practice before parking and switching off engine is to turn open the air con dents and full blast it so that mold will not grow inside the coil.

i must admit that so far i never call anyone to service my air con system coz it less than a year. still so new, so i stingy to pay for servicing.

after today's experience with the agent, i think i will ask them to service my air con. Carrier service is more expensive than outside, but they are the agent of Toshiba and Carrier and i can trust them. they won't run away.

the carrier guy even offer to service my air con FOC. he did alot of cleanings, vacunm, check compressor, check the temperature with a gadget. so impressive!!!

So r u using the normal insulation and copper pipe? Which company u bought ur aircon from? Gaincity?

[poseidon_gal 0]

I got one question.

Below is one of my shortlisted aircon.

Daikin compressor MA56EV1 (20,267BTU/hr) system 3 which uses FT25DVM (9000BTU/hr).

Does that means if I only on 2 FCU i will receive 9000BTU/hr from both FCU but if i on 3 FCU then i will only receive 6000++ BTU/hr as it is being limited by my compressor?

Is my theory correct?

[kenahamtan 0]

I got one question.

Below is one of my shortlisted aircon.

Daikin compressor MA56EV1 (20,267BTU/hr) system 3 which uses FT25DVM (9000BTU/hr).

Does that means if I only on 2 FCU i will receive 9000BTU/hr from both FCU but if i on 3 FCU then i will only receive 6000++ BTU/hr as it is being limited by my compressor?

Is my theory correct?

I think I heard this same theory before and it seems true. Compressor BTU < all Fan units combined BTU based on that you would not have all Fan units operate at the same time. If all fan units are operating, yes BTU is split and each fan unit would operate below its spec BTU. Nothing wrong with operating below BTU, just takes longer to cool your room => waste more energy.

[poseidon_gal 0]

thanks for the answer.. choosing aircon now..headache..

[donut88 1]

I got one question.

Below is one of my shortlisted aircon.

Daikin compressor MA56EV1 (20,267BTU/hr) system 3 which uses FT25DVM (9000BTU/hr).

Does that means if I only on 2 FCU i will receive 9000BTU/hr from both FCU but if i on 3 FCU then i will only receive 6000++ BTU/hr as it is being limited by my compressor?

Is my theory correct?

if u got 3 units of 9000BTU each, u shld at least get 26000BTU compressor.

of course u still can get your 20000BTU compressor..... if u know that you will never 'on' 3 units at the same, then its ok

if u 'on' 3 units at same time, then it takes longer to cool the rooms, and the rooms may not have the coldness that you want

[donut88 1]

So r u using the normal insulation and copper pipe? Which company u bought ur aircon from? Gaincity?

i bought the aircon from a small shop, not famous as gaincity or whatever shop that you know.

insulation is class 0 with thicker copper pipes... i cant remember the specs already.

well, its not the fault of the installer. nothing wrong with the installation. this is confirmed by the toshiba agent service guy. its how the air con unit works that the user needs to understand and do the necessary in order to maintain the air con system.