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Thomas BrooksAug 5, 2025
Why is my SystemAir SYSHP MINI SPLIT not heating or cooling as expected?
- EEric MosesAug 5, 2025
If your SystemAir Heat Pump is on but not heating or cooling as expected, several factors could be at play. First, ensure that the temperature settings are correct by checking the parameters T4HMAX and T4HMIN in heat mode, T4CMAX and T4CMIN in cool mode, and T4DHWMAX and T4DHWMIN in DHW mode. Insufficient water flow could also be the culprit; verify that all shut-off valves are correctly positioned, the water filter isn't clogged, there's no air in the system, the water pressure exceeds 1 bar when cold, the expansion vessel is intact, and the water circuit resistance isn't too high for the pump. Finally, confirm that the water volume in the installation meets the minimum required value.
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