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Question How to force 12kBTU solar mini splits to work at full capacity in cooling mode?

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(@krzysiek_kta)
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Joined: 2 years ago

I have been using EG4 12k BTU hybrid mini splits (R410a) since late 2024. They work well , yet I have an issue with how the inverters modulate their compressors. It seems that the compressor power output cap is mainly driven by external temperature regardless of the temperature gap between the set indoor temp and the actual temp in the space.

The result is that during cloudy humid days when the external temperature drops below 90 deg F the power is modulated down to 40-50% (400-500w power draw from grid) and the delta T on indoor unit falls to 15-17degF.

On hot sunny days with temps reaching 100F and above both units I have can reach 80-100% capacity (750-850w power draw) and indoor unit delta T jumps up to 22-25degF in Turbo/Auto fan mode.

Question:

Is there any way to force the mini splits  to to work at full capacity without modulation?

that would be very useful to cool/dehumidify quickly the space if needed even on cloudy below 90degF days.

 

@ EG4 Eric - Any help would be appreciated.

 

Brgds

K

 


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Posts: 102
Topic starter
(@krzysiek_kta)
Estimable Member
Joined: 2 years ago

bump.

any ideas?

 

K


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EG4 Eric
Posts: 1161
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(@eg4eric)
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Joined: 2 years ago

@krzysiek_kta
I apologize! I did not see this post. I am getting with our HVAC Technician for this question. 


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(@krzysiek_kta)
Joined: 2 years ago

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Posts: 102

@eg4eric 

Any updates?

 

Brgds

 

K


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EG4 Eric
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@krzysiek_kta 

You can use Dry Mode. It will keep the unit in the cooling operation and also help to dehumidify.

The unit is variable capacity, so there's no way to eliminate the modulation or force into a hundred percent.

One thing you can do is adjust the fan speed and make sure that it's on the auto mode. This helps to achieve a better temperature split.


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(@krzysiek_kta)
Joined: 2 years ago

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Posts: 102

@eg4eric 

My 12k BTU Hybrid mini split is the r410a version and it does not have Dry Mode.

I was wondering if like other makers EG4 provides manual mode to bypass modulation.

 

Brgds

 

K


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EG4 Eric
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@krzysiek_kta 
I'm getting with our HVAC Technician about this.


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EG4 Eric
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(@eg4eric)
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@krzysiek_kta 
On these older units, the Dry mode is the same as Dehumidifying mode.

image

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(@krzysiek_kta)
Joined: 2 years ago

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Posts: 102

@eg4eric 

My apologies.

I just found the dehumidification mode on the app. Yet it doesn't help much in my Houston humid jumping outside temps.

I'd really have the manual bypass the inverter modulation and could run the units at 100% capacity to catch up with the weather.

Brgds

K


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Posts: 102
Topic starter
(@krzysiek_kta)
Estimable Member
Joined: 2 years ago

thx.

I have never used the remotes. The app does not have the "dry' mode.  I will try.

Brgds

 

K.


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Posts: 102
Topic starter
(@krzysiek_kta)
Estimable Member
Joined: 2 years ago

FYI

 

Unless remote is used to activate the dehumidification mode there is no way to mange that setting in the app.

basically the the only option possible from the app is to change the operating mode once it is activated by remote.

 

so weird....

 

just my 5 cents

 

K


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EG4 Eric
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@krzysiek_kta 
You should be able to select it through this option

image

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