Question about Fujitsu 18C1 Air Conditioner

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I had installed fujitsu vrf system ducting type ,outdoor unit model AO54UJBMR,indoor AR22...and I have a problem becouse Ihaven't installation manual and I don't know is it impossible set up outdoor to recognise each of three indoor units'withoout remote control (I have wired type rem. controller)

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  • Mathew F
    Mathew F May 11, 2010

    Heya,
    So what do you actually want to be able to do? Do you want all three indoors working off a single remote or a remote to controll each individual evap? I am a bit confused sorry


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you have to clean your A/C unit, indoor and outdoor, be sure all frost are de frosted before you run your unit again, or else it will frost again. if this not work your unit need re-gassing.

Posted on Jan 21, 2008

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Unit will not run unless both indoor fan coils are in cool mode.

Posted on May 22, 2009

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SOURCE: Outdoor unit does not start. indoor unit fan does run.

by the sound of it the relay in the outdoor section is bad

Posted on May 31, 2009

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SOURCE: Fujitsu mini split outdoor unit not running, but indoor unit is running after turnning on

Check the disconnect switch and make sure that both the fuses are good and not shot. If one is shot then the system wont work. There are two fuse. Also be careful due to you will be working around 210 volts

Posted on Jun 01, 2009

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SOURCE: U4 System transmission between indoor and outdoor units Daikin

Have you found the problem with ya A/C yet PD with the U4 code, if so what was it.

Posted on Jul 27, 2010

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