Aircon AstiquerAir-con mold control specialist

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Common aircon compressor problems..

aircon compressor

1) Compressor overheating caused by:

a) A choked condenser or a condenser fan that is spinning too slowly.
b) Too much gas in the system, DO NOT top up the gas unnecessarily!
c) Too little gas in the system. For more details, please read compressor.
d) A worn out compressor.
e) Compressor oil turned bad, thus generating high friction and heat. Read compressor.
f) A choked drier filter / capillary tube / expansion valve.
g) Capillary tube undersized, faulty expansion valve.

2) Compressor Jam.
For more details, please read compressor.

3) Compressor Trips Circuit Breaker
For more details, please read compressor and power trip.

4) Compressor spins too slowly (for inverter system)

In order to properly diagnose an inverter air conditioning system, technicians must always measure the running amperes
(meaning, the current). One very important thing to take note is that different manufacturers built their inverter technology
very differently. Some manufacturers like DAiKIN provides fast cooling feature, allowing the compressor to spin
exceptionally fast when the room is hot, or commonly known as a high load environment. Under a high load environment,
the compressor can provide some extra 50% extra cooling for the system.

A 9000btu system usually consumes ~4 amperes of electrical current, thus a DAIKIN inverter under high load can
consume 6 amperes of electric current (~12KBTU). Meaning, if your indoor fancoil is larger, you should expect higher
running amperes. The highest running ampere is usually limited to ~12 amperes; a non inverter is only ~8 Amperes. So
DAIKIN users, don't forget to keep your doors and windows closed, running your system at high load for long hours is very
stressful on the cables and electrical components, it can damage your system. Of course, you can choose to turn off the
high load feature if you find it difficult to close your door.

Having mentioned above, some other manufacturers do not provide fast cooling feature. Thus during high load
environment, you should get the normal corresponding amperes. That is ~4 amperes for a 900BTU aircon, 6 amperes for
a 12KBTU and so on, just add 4 amps every 9000BTU.

Most inverter systems are intelligent and automatically generate malfunction codes if something is wrong with the system.
If no fault is found, it could be that your system is too dirty and thus sending the wrong temperature information the
condenser mother board. Conduct a proper cleaning, NOT general servicing, that should fix the problem.

email: astiquer@gmail.com