8 out of 10, it cannot be the aircond, the aircond itself that is broken. When the aircond sometimes works it is not the aircond. It could be the wiring.

When was this happened the first time? After installing the aircond? The aircond just installed recently?

When is this most often happen? During raining day? If during raining days the wire outside to the compressor shorted as rain water conduct the leakage.This is more so the leakage is not high. If high the MCB should trip instead of the main ELCB(the blue switch) where live touches neutral. ELCB trip when leak to earth happens like live wire touches earth.

This lead to another question. What is the rating of the MCB? 10A, 20A, 32A? and do you know whcih one in the first place?

Electrician and Air cond installer diffrent people. Electrician should be coming back to completer some balance job later but when I called him yesterday, he say air cond problem.

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Added on April 12, 2012, 10:20 amWill have to do that, it seems. When installed no issue. problem only comes later.

This post has been edited by phoenix69: Apr 12 2012, 10:20 AM

Aircond installer vs electrician !!!!

The electrician lay cable from main to the switch and to the aircond indoor unit. To test this circuit is to disconnect the aircond indoor unit supply and connect the 3 wire (live, neutral and earth) to a power point and use a fan plug it on and swtich on. If no trip the circuit is ok, the electrician can go home otherwise it is clearly his fault. Then get the aircond installer and get him to pull a new cable from the indoor unit to the out door unit.

Haiz, dunno where ithe issue is lor. wiring or air cond. It happens randomly. Even on sunny days, but recently there is been a lot of rain. Maybe also can be the rain
Where to see the MCB rating?

Ya, on sunny day the water is sticking there, not completely dry yet.

MCB. see this C32. C for current i think.

I'm assuming that you have a ON / OFF switch before you are able to use the remote control to turn ON / OFF you account. * Currently lot of them without used ON / OFF swithc anymore.

You may want to check is the wires in the ON / OFF switch been connected properly, because if the wires lost than it may short circuit as well. If you able to turn ON the aircon try use the remote control to ON / OFF and see any trip on your ELB lol.

Another thing you may want ot check is beside the aircon, is the wire been used for other equipment? Perhaps close all the equipment and only use the aircon to see any impact or not.

Check the outdoor compressor, maybe wires expose and create low current short circuit. Or could it be your wall is wet, and short the cables too.

I think he dont fully understand what we are talking about.

Maybe this is a little easy to understand. When ELCB trips it is because there is a current leak. And the leak most likely is somewhere between the indoor unit cable that connect to the out door compressor. The cable could have been cut but not broken. The cable has 3 wires inside. When water get into the cut cable, current take a short cut, flow/jump from one of the exposed (cut) wire to another its nearby exposed (cut) wire and when this happens the ELCB trip. Another leak is the cut/exposed wire when wet some current flow to the wet wall down to the earth and the ELCB trips.