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Is It Safe If I Just Run Half Of My Minisplits? - Ask The Expert Episode 315

Today's question is, "Hey Dan. Is it safe to only have one air handler running on a ductless minisplit multizone, and the other one turned off? Or do they both have to be running at the same time? I have a 36k multizone condenser, and two 12k air handlers connected to it." Yeah, that's fine. As long as they are both connected, and you aren't running it with less than 50% of capacity, you don't have to run both units at the same time. That's perfectly fine. No problem at all.

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James

I didn’t know that was ever a concern. I waiting on delivery of a 21k (12/9) and a 27k (18/9) the 9s are going in 2nd floor rooms that will be used infrequently. Should I be okay using the 12 and 18 primary? I know that number is more that 50% of the total. Does that mean it’s running over 50% capacity ?

Peter Sachs

So if on my second level, I have three bedrooms, two with 6k units and one with a 9k unit all running off the same ext 24k condenser and if the person in a room with one of the 6k units is more finicky and often is the sole user of heating then I should consider a different setup?

Mike B.

Can I run a 2 zone system with only one zone connected? The second zone space is not yet constructed (over garage expansion). To be completed after Summer heat .

Brian

Will the condenser electrical load be reduced when you only use 50% of the capacity

Allan Rivera

I have a 36k multizone with 4 zones. three 9k and one 12k. I have only the 12k running and all 9k's are off, one of my 9k is making a noise and gets cold. is that normal? but when i turn that 9k on it works normal.

Donald Griggs

I just bought a 36k MRCOOL diy condenser and 9,12$18k handlers. It goes to P03 error code,that blinks about 7-8 times,then goes back to temp setting and restarts,about every 2 hours or so. What causes this,and what is fix,or should condenser be exchanged,since this happened right out box? If exchanged,can precharged lines be reused,making sure all valves closed before disconnected?-Don

Jack

Can my mini split dual units run on auto mode. I noticed that when the unit in the living room went to heat the one in my bedroom cooling shut off. Will this damage anything?

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Is It Safe If I Just Run Half Of My Minisplits? - Ask The Expert Episode 315