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Gearboxny
29-07-2013, 12:44 AM
Hi guys! I got samsung EH070Cav indoor unit and UH070cav outdoor unit 1.5 years old. When i turn it on system works for 10 minutes and turns off with 554 error code.
554 - Outdoor unit refrigerant Full leakage(Gas leak)
I checked all pipes, valves for leaks and add a *****. But i have the same thing.
May be the issue is in the pressure switch?
Any ideas?

aeb200
30-07-2013, 05:07 PM
Check The Outdoor expansion valve - we have replaced many on the Samsung units - they seem to get stuck causing the compressor to overheat.
Alternatively check strainer (on suction to compressor after the 4 way valve isn't blocked)

install monkey
30-07-2013, 08:52 PM
http://www.mediafire.com/download/3osbp5272ohm2tn/Cassette_Service_Manual.pdf
click on link above for manual- correct outdoor- but cassette indoor- no pressure transducer- either faulty temp sensor or compressor not pumping
whats the standing pressure,running pressure, have you weighed out the charge to comfirm correct?
are coils clean- indoor and out

superswill
14-09-2013, 10:11 AM
outdoor PCB? maybe reading the wrong values from temp sensors