GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
180
②Four-way valve: While this valve is normally running, the four copper pipes connected to it will suffer
different temperature. When a unit switches to act the valve, you will feel obvious vibration and hear
sound.
Touch the upper
part of an electric
expansion valve
and you will feel
its vibration while
units are being
powered on
Make sure the
coil is fixed
and firm
Here is the position of a 4-way
valve within a unit. DO NOT
touch it. The exhaust pipe it
connects with transmits
high-temperature refrigerant
which may scald you
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