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11-10-2010, 01:27 PM #1
fujitsu ducted condensation control nightmare
I have 2 units Fujitsu ARY 60 UUAK / AOY 60 UMAYT with same problem - from time to time it goes to high pressure alarm. After a while get high pressure switch shortcircuited. I observed what is going on, and measured pressures. On outdoor unit fans start at low speed, and high speed is switched on at 37 bar. I think high speed should be switched earlier. What is reason for this? Electronics fault, program or sensor.
Last edited by gille; 13-10-2010 at 01:40 PM.
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12-10-2010, 12:14 PM #2
Re: fujitsu ducted condensation control nightmare
Hi Gille,
in cooling mode speed of outdoor fan set ambient thermistor. Can be an ambient temperature became low +5C?
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15-10-2010, 01:07 PM #3
Re: fujitsu ducted condensation control nightmare
You are right, I'll have to check thermistor, but I do not have ohm/temp table, maybe i could try to relocate thermistor.
Thank you.
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15-10-2010, 02:02 PM #4
Re: fujitsu ducted condensation control nightmare
see http://www.refrigeration-engineer.co...0&postcount=26
Nike123 worked hard for me)
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