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Jenna WellsSep 12, 2025
How to fix four-way valve reversal failure in hydro-s Heat Pump?
- AAngela JohnsonSep 12, 2025
Four-way valve reversal failure in your hydro-s Heat Pump can be caused by the valve failing to reverse or a lack of refrigerant. To troubleshoot, switch to cooling mode to check if the 4-way valve has reversed correctly, replace the 4-way valve if necessary, and add refrigerant.