Air Conditioner Out

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hdyerla
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Air Conditioner Out

Post by hdyerla »

Our AC just went out and blowing hot air. Before we take it in does anyone know is this is a simple fix? Thank you
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Karl
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Re: Air Conditioner Out

Post by Karl »

There are quite a few relays and things in there.
First thing I would suggest is to try run it on ground power. That will help to determine if it is the A/C unit or a power issue.
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CFIDave
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Re: Air Conditioner Out

Post by CFIDave »

Start by looking to see if the Power Status LED on the control panel is illuminated when AUX POWER switch is ON -- if not, check the circuit breaker for the 3rd alternator or try ground power.

If you remove the rear cabin wall/baggage compartment rear cover to access the A/C unit, there are 5 circuit breakers that you might want to check.

Otherwise you may have experienced a refrigerant leak somewhere that will likely require removal of the entire A/C unit in the back to investigate. I had this happen on my DA42-VI RACC II system, which I believe is still the same A/C model installed in DA62s.
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ultraturtle
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Re: Air Conditioner Out

Post by ultraturtle »

It is also possible that the 3rd alternator field excitation batteries are dead and need replacement (This happened on my DA42-VI.) If so, you will not see the power status LED on the control panel illuminate.

No idea where they are located. Could not find them in the IPC for the DA62. Also not documented for the DA42, so we tore the aircraft apart until we finally located them beneath the left rear seat.
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