Gree GMV-VQ680WM/C-X Service Manual page 324

Gree GMV6 HR DC Inverter VRF Units Service Manual
Step 1: Dsconnect the power cable after power off the hydro box.
Step 2: As shown in the figure, switch the multimeter to the diode gear. Point the black and red
probes to the following positions to check if the main board is normal.
Black probe Red probe Symptom
The main board is normal if the multimeter does
X2(3) X1(2)
not beep.
The fuse is damaged and needs to be replaced if
Cathode of fuse（4） Anode of fuse (1)
the multimeter does not beep.
322