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Old 02-19-2020, 12:55 PM   #1
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Fujitsu Halcyon not blowing hot air


Hi guys, I have a Fujitsu Halcyon DC inverter in my basement that is not blowing hot air. The unit turns on and just blows cool/room temperature air despite it being on the heat setting.

Any suggestions on what to do? I did do a google search, but my filter is only lightly dirty (and wouldn't get in the way of blowing hot air anyways). I looked at the unit from the outside and other than looking a little rough from exposure to the elements, it looks fine.

What can I do at this point before bringing (and paying) someone to look at it?

Thank you for the help.
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Old 02-19-2020, 03:59 PM   #2
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Re: Fujitsu Halcyon not blowing hot air


Is the compressor running?
If so check refrigerant charge. If there’s pressure in the system the charge should be pulled and weighed.
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Old 02-21-2020, 03:36 PM   #3
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Re: Fujitsu Halcyon not blowing hot air


What do you mean by the compressor? Where is that?
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Old 02-21-2020, 04:54 PM   #4
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Re: Fujitsu Halcyon not blowing hot air


It’s in the outdoor unit.
Although if it were not running when it should you’d likely get an error code showing on the system, and it would not run.
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Old 02-21-2020, 08:04 PM   #5
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Re: Fujitsu Halcyon not blowing hot air


Oh then yes, the compressor is running. The system turns on and blows air. The issue is that the air is not coming out warm. It just blows out cool air when I want to heat up the room.

I don't know how to check the refrigerant charge.
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Old 02-21-2020, 08:42 PM   #6
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Re: Fujitsu Halcyon not blowing hot air


It’s likely time for a service call then. Have the charge checked. If it’s low the leak will have to be found and fixed.
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Old 02-24-2020, 10:00 AM   #7
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Re: Fujitsu Halcyon not blowing hot air


I think that's what I'm going to have to do. When I have my HVAC system serviced in a couple of months, I'll ask them to look at the Fujitsu unit. Thank you for your time and help.
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Old 02-24-2020, 05:57 PM   #8
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Re: Fujitsu Halcyon not blowing hot air


I’d suggest not running the unit until it’s serviced. Low charge can cause damage to the equipment.
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Old 02-24-2020, 06:34 PM   #9
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Re: Fujitsu Halcyon not blowing hot air


Noted. It's never turned on anyways. I have some family visiting and they're sleeping in the basement so that's why I turned it on to see if the heat worked. I will be sure it's left off. Thanks again.
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