Gree Error Code U7: Reversing Valve Malfunction

Severity: Warning
Type: digital display
Where to look: remote controller

Warning: Your Gree air conditioner's reversing valve is not working properly, which could lead to comfort issues and potential damage to the compressor.

How to Fix Gree Code U7

Step 1: Turn off your air conditioner at the thermostat and the circuit breaker to prevent any further issues.
Step 2: Check if your system has enough refrigerant. If it's low, you may need to call a professional for a recharge.
Step 3: If you're comfortable doing so, clean the reversing valve and check for any obvious issues. If not, or if the problem persists, call a professional HVAC technician.

How to Reset Gree Code U7

Turn off the unit using the remote control or wall controller.
Turn off the circuit breaker for the outdoor and indoor units. Wait 60 seconds.
Restore power at the breaker.
Turn the unit on with the remote control. If the error returns, the fault needs professional diagnosis.

What does U7 mean?

The U7 error code on your Gree air conditioner indicates a malfunction with the reversing valve. This valve is responsible for switching the refrigerant flow between heating and cooling modes. When it's not working correctly, your system may not switch modes properly, leading to comfort issues and potentially damaging the compressor. It's important to address this issue promptly to prevent further problems.

Affected Models

Replacement Parts

Part	OEM Number	Est. Cost
Reversing Valve	Gree 385251500	—
System Control Board	—	—

Related Codes on Same Models

Code	Description	Severity
E1	High Pressure Protection	Warning
E2	Anti-Freeze Protection	Warning
E3	Low Pressure Protection	Warning
E4	Compressor Discharge Temp Protection	Warning
E5	Over-Current Protection	Warning
E6	Communication Error Indoor/Outdoor	Warning
E7	Mode Conflict	Warning
E8	Anti-High Temperature Protection	Warning
E9	Cold Air Prevention	Warning
F0	Blower Temp Sensor Malfunction	Warning