Gree GMV6 HR DC Inverter VRF Units Service Manual
235
4.1.1.1 Mechanical Inspection
(1) Confirm that the unit power is disconnected.
(2) Remove the electrical appliance cover.
(3) Check whether the power cable is fixed on the wiring board.
(4) Check whether the fuses on the main board and filter board are damaged.
(5) Check whether the varistors on the main board and filter board are damaged.
4.1.1.2 Electrical Inspection
Check the power cable from the main switch board to the ODU:
(1) Use an ohmmeter of at least 500V DC to check whether the insulation resistance between each
phase and the ground reaches at least 1 megohm. Small insulation resistance indicates a
potential electric leakage.
Warning:
Electric shock
(2) After the checking, connect the power and verify that the voltage of the power terminals is
correct:
The power voltage between two phases is 380-415VAC±10%.
The unbalance rate of the power between two phases does not exceed 2%.
Voltage between L1 and N: 220-240 VAC.
(3) Check the power on the main control board:
Confirm that the X4 and X5 on the main control board are active.
Summary of Contents for GMVVQ1015WM/C-X
Page 418: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 416 GMV VQ400WM C X GMV VQ450WM C X...
Page 420: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 418 NCHS1D...
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Page 426: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 424 6 1 2 Heating Operation...
Page 427: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 425 6 1 3 Main body Cooling...
Page 428: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 426 6 1 4 Main body Heating...
Page 430: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 428 6 2 2 Heating Operation...
Page 431: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 429 6 2 3 Main body Cooling...
Page 432: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 430 6 2 4 Main body Heating...
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