Samsung
Reversing Valve Stuck or Misoperating
Unit blows warm air in COOL mode or cold air in HEAT mode (reversed operation).
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Stuck 4-way reversing valve, Faulty reversing valve coil, Incorrect wiring to valve coil, Low refrigerant charge
How to Fix / Troubleshooting
Safety warning: The reversing valve is part of the sealed refrigerant system; do not attempt to open or braze it yourself.
- Step 1 – Confirm mode: Ensure the remote is set correctly to COOL or HEAT and that the mode icon matches.
- Step 2 – Listen for valve switching: When changing modes, listen at the outdoor unit for a click from the reversing valve.
- Step 3 – Power reset: Turn off power for 5–10 minutes, then restart and test both modes.
- Step 4 – Technician tasks: If the valve remains stuck or operation is reversed, a technician must test the coil and may need to replace the valve and recharge refrigerant.
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Repair Difficulty
Professional Required
5/5
Required Part
Reversing Valve
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