Gree GMV6 DC Inverter VRF Units Service Manual
243
Check whether the electronic expansion valve of the ODU and 4-way valve work properly, and
whether the oil-return pipeline and oil-return valve are normal. Touch the oil-return capillary tube with a
hand to check whether oil flows in the tube and check the pipeline temperature.
Diagnosis method:
1) Electronic expansion valve: When the unit is powered on and off each time, the electronic
expansion valve needs to reset. Touch the valve with a hand to check if the valve core rotates.
In the second half of the resetting process, the valve core will click and vibrate obviously.
Subcooling
electronic
expansion valve
Heating electronic
expansion valve
Note on touching the electronic expansion valve:
Summary of Contents for GMV-1015WM/G-U
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