Aircon Mainit na Naman

[gerald_g]

Mga sir, I've experienced my aircon blowing warm(er) air for the third time in two mos.

First time na uminit aircon was after our trip to subic where I experienced a rise in engine temperature. Halos umabot na po sa redline yung temp. ko that time pero I still made it to manila, pinahinga ko lang makina and just drove at 80-100 KPH sa NLEX. The following week uminit na po aircon ko and may nakitang leak sa isa sa mga fittings. Naayos naman po sya and lumamig pero only for 2 weeks.

Then binalik ko po sa gumawa and may nakita na naman na leak sa may drier. So inayos ulit, refill ng freon and it was cool for about a month.

Ngayon po mainit na naman aircon ko and what I noticed is may hissing sound sa may area ng evap and lumalakas yung hissing sound pag pinapatay na yung aircon. And this does not happen nung malamig pa yung aircon ko.

Is it a sign of low freon level (again) due to another leak? Hindi naman tumataas temp ko these days, which is the cause of the leak in the system sabi nung gumawa - kasi daw pag tumaas engine temp., pressure builds up kaya naghahanap daw ng lalabasan ng pressure sa aircon system ko..

Ano po sa tingin nyo? Meron lang po kayang leak na hindi nakita before or is it coming from another source?

TIA

[yapoy86]

yes its another sign na low refrigerant level na ang system...starved na sa refrigerant yung low side kaya may hissing sound (coming from the expansion valves) hindi na kasi solid yung pressure sa high side kaya may hissing sound..

possible may leak na naman yan... normal naman may pressure build up sa high side pero pag hindi maganda cooling ng condenser mo magkakaron ka ng too much pressure build up,

pwede din caused by blockage in the system and also can be caused by defective expansion valves.. make sure na vacuum ang system mo for at least 30 mins..kasi baka may restrictions ang system mo kaya nagkakaron ng leak.. papalitan mo na rin lahat ng O-rings to make sure..

[bambino]

have it leak tested once again and this time find an A/C shop that do an electronic leak detection and follow it up with soap spray to a suspected area . that's the way of finding a hard to find leak. they don't have to dismantle all your A/C SYSTEMS just to find the leak. it would be nice if the shop is equipped with nitrogen , that way they will be able to bring up the pressure at least 150 psi while doing an electronic leak detection

[gerald_g]

thanks sirs yapoy and bambino for your inputs
could you suggest an aircon repair shop na meron electronic leak detection.
i really wanted to get this right this time.

i called up the shop na gumawa last time and sabi nila their warranty would only cover the part/s that they fixed before.. so kung hindi sa dryer ang leak bayad na naman ako.

so i guess i'll just go to another reliable shop this time. any recommendation po.. i live in ortigas ext. pasig po pala..

[bambino]

i actually live here in CANADA and presently own a specialty shop ; specialized in A/C , ELECTRICAL AND ADVANCED AUTOMOTIVE ELECTRONICS DIAGNOSTICS CATERING AUTO SHOPS AND SERVICE CENTERS NEARBY .

to tell you , i don't know any shop out there that do this procedure of testing but you can lean on my advice , it's accurate.

[gerald_g]

mga sir, ano ba sa tingin nyo ang pinaka-effective na leak detection means? karamihan yata yung soap bubbles lang ginagamit e.. ano po ba yung ibang ways to find leaks?

[puroy]

yung hizzing sound definitely may leak ka na naman.

alam ko meron magaling na aircon repair sa pasig area. seach mo na lang sa forum Mang Danny or Danny's aircon repair. or kung gusto mo, sadyain mo si super mang Mario sa likod ng SM North.

hth

[puroy]

sorry, double post....:|

[gerald_g]

sorry, double post....:|

sir na-search ko na pero wala na daw pala si mang danny dun sa shop.. iba na daw ang nagmamanage and mga tao sa shop.. sayang.. thanks anyway

[smirky20]

pwede mo lagyan ng air yung AC system up to 250psi using compressor motor ng refrigerator attach to manifold gauge, then monitor mo yung pressure nya kung baba. pag bumaba ibig sabihin may leak yon.

pag ok ang A/C system mo ang pressure sa high side is about 200-250psi. gawin mong reference yung high side wag yung low side.

pag low refrigerant ang A/C ang common sign ay mag ON ang clutch ng compressor for a while then mag oOFF and up and down din ang iddling, sabay sa on off ng compressor.

[smirky20]

pwede mo lagyan ng air yung AC system up to 250psi using compressor motor ng refrigerator attach to manifold gauge, then monitor mo yung pressure nya kung baba. pag bumaba ibig sabihin may leak yon.

pag ok ang A/C system mo ang pressure sa high side is about 200-250psi. gawin mong reference yung high side wag yung low side.

pag low refrigerant ang A/C ang common sign ay mag ON ang clutch ng compressor for a while then mag oOFF and up and down din ang iddling, sabay sa on off ng compressor.

[gerald_g]

pwede mo lagyan ng air yung AC system up to 250psi using compressor motor ng refrigerator attach to manifold gauge, then monitor mo yung pressure nya kung baba. pag bumaba ibig sabihin may leak yon.

pag ok ang A/C system mo ang pressure sa high side is about 200-250psi. gawin mong reference yung high side wag yung low side.

pag low refrigerant ang A/C ang common sign ay mag ON ang clutch ng compressor for a while then mag oOFF and up and down din ang iddling, sabay sa on off ng compressor.

Thanks sa input sir smirky. I went back to the shop and pinatingnan ko ulit kasi under warranty pa naman trabaho nila kasi 1 mo. pa lang. Ang ginawa lang is kinargahan ng freon, tapos hinanap nila ulit kung may leak and mukhang wala naman daw (immediately) visible na leak. Nilagyan lang nila ng takip (the small green cap) yung isang valve where you put in the guages. Then sinabi nung may ari ng shop na observe ko daw ulit, then pag uminit daw ulit papalitan yung isang rubber hose.. di daw kasi madali makita pag dun galing ang leak.. Well I dont think that's efficient on their part.. parang di ko yata matanggap na di nila makikita yung leak kung dun lang sa hose.. anyway pag uminit ulit hindi ko na siguro dun ibabalik.. sobra na siguro yung 4 times ko pa ibalik dun kung leak lang e di pa makita..

[bambino]

hanap ka ng may electronic leak detector na shop, kung evaporator 'yan mahirap talaga hanapin.kailangan pa nilang baklasin ,time consuming . dito sa shop ko (CANADA) fully equipped ako niyan it usually takes me 10- 15 minutes to complete a leak testing , dual or single A/C SYSTEMS. no guesswork tapos follow-up ng spray of soap and water sa suspected area.

worst case scenario pag hindi present ang leak at the time of testing , i first
evacuate the system and put some oil with dye and the right amount of refrigerant . the next time the car comes back with the same problem , with the use of a black light , the traces of oil will illuminate .that will aid the tech to narrow down if not to pinpoint the problem part. good luck next time.

[joe_fox]

sira ba pag may hissing sound sa aircon? pag off ko ng aircon, palaging may hissing sound.. pero nawawala naman after a while.. malamig na man aircon ko.. L300 fb pala ung ride ko na may hissing sound..

[1D4LV]

*gerard, this happened to me...at first, i am just ignoring the hissing sound. but kaninang umaga, biglang init ng ac ko. buti na lang malapit ang ceejays dito sa house.
nakita nila wala ng freon, so definitely may leak. they tried locating the leak, pero walang makita physically. nung tinanggal yung cooling coil, andun ang butas.

palit tuloy ako cooling coil... lamig na ng oto ngayon.

[baludoy]

sadyain mo na lang si mang mario para sigurado ka bos. dyan lang naman iyan located sa likod ng sm north edsa. iyon nga lang super dami daw cients ni mang mario kaya kailangan maaga ka