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Daikin mini split heat issue

Ntdk1212

New member
Joined
Apr 5, 2022
Messages
2
Looking for some advice/answers. I have a 36k outdoor unit with I believe 4 ports but currently only using 2. I have a ceiling mounted cassette that’s 15k and a wall mounted unit that is 9k. And have the heat pump option.

My issue is with the big cassette. It doesn’t have automatic on or off, so the fan is always blowing when on A/C. When on heat the the fan is not always on and only turns on with the heat sporadically. I’ve seen it turn on anywhere from 1 min to 45 mins and anywhere in between. I could turn it all the way up to 90f and it doesn’t turn it on any more. Any ideas? Thanks.
 
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justinjoyal

Well-known member
Joined
Apr 30, 2015
Messages
888
Location
Quebec
The wall unit works fine ?

In heat mode, most systems have an "anti-cold" protection which will turn on the blower only when the indoor coil reaches a certain temperature. Maybe something's wrong with your system and it's not reaching that temperature.
 
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Ntdk1212

New member
Joined
Apr 5, 2022
Messages
2
Yes the wall unit works great. So what you’re saying is if the anti-cold point is like 65F, it won’t turn on till 65F?
 
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