airco compressor turns on and off everey 2-3 secs.

[maimaicomp]

mga sir pa help po, yung hyundai grand starex ko kapag unang bukas ok naman ang aircon, sobrang lamig, pero after 15-30mins bigla na lang mawawala yung lamig, nung sinilip ko yung compressor nag turn on and off sya every 2-3secs. chineck ko yung aircon relay nya ok naman kaya lang may tick sound akong naririnig tuwing mag on at off yung compressor, malakas naman yung auxillary fan nya, pansin ko rin nung lumalamig pa sya hindi humihinto yung andar ng compressor, hindi sya nag automatic off kahit sobrang lamig na sa loob ng sasakyan, san po kaya problem neto mga sir?

[jick.cejoco]

Your system is short cycling. Have a tech check the both the low and high side pressures with engine at 2000 rpm. The low side should be between 28- 35 psig. If it is lower the low side may be restricted or the system under charged

[yebo]

check the line after the filter drier canister. if it is cold then you have a restricted filter drier.
check the sight glass. if there are bubbles then your system is undercharged.
if not these 2 then you probably have a defective temp sensor.

[jakewise]

It is also possible that your system is overcharged. Did you have your Aircon fixed lately, like charging the freon?

[benchman]

or it could be your high/low pressure switch is acting up.

[maimaicomp]

maraming salamat po sa mga sumagot, update ko lang po, napansin ko ngayon kapag front aircon lang yung nakabukas ok sya hindi nag-off yung compressor, pero pag binuksan ko na yung rear aircon dun na sya nag off and on yung compressor, kapag pinatay ko ulit yung rear aircon and after 30secs to 1 minute ok na ulit sya. pinasok ko na tong starex ko sa hyundai north edsa pero di nila makita yung problema. kulang lang kaya sa charge ng freon or overcharge? or baka meron pa ibang pwede cause ng on and off ng compressor?

[jick.cejoco]

the best way is to do a pressure check i just mentioned. cut the rain dance. cut the guess work. observe the pressures when the event happens. check the static pressure and compare with the pressure/tempreature chart




Pressure - Temperature Chart for HFC-134a

[maimaicomp]

the best way is to do a pressure check i just mentioned. cut the rain dance. cut the guess work. observe the pressures when the event happens. check the static pressure and compare with the pressure/tempreature chart




Pressure - Temperature Chart for HFC-134a

thanks po, ginawa na din po ng hyundai yung pressure test at freon check, normal naman daw lahat, siguro try ko na lang dalhin outside casa para makita ko rin kung talagang ginagawa yung unit, pinaiwan kasi sa kanila almost 1 week pero di nila naayos.

[jick.cejoco]

thanks po, ginawa na din po ng hyundai yung pressure test at freon check, normal naman daw lahat, siguro try ko na lang dalhin outside casa para makita ko rin kung talagang ginagawa yung unit, pinaiwan kasi sa kanila almost 1 week pero di nila naayos.

go to another shop who can.

by the way...............


what were the pressures at around 2000 rpm with both front and rear units on?

is your system manual or automatic (climate control)?

[yebo]

ok pag front a/c lang pero short-cycling pag umaandar ang rear a/c? undercharge yan pag ganyan.