Goodrive18 series two-in-one VFD Troubleshooting
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The increase of the bearing noise indicates a fan fault. If the VFD is applied in a key position,
replace the fan once the fan starts to generate unusual noise. You can purchase spare parts pf
fans from INVT.
Read the safety precautions carefully and follow the instructions to
perform operations. Otherwise, device damage or physical injuries or
even death.
Step 1 Stop the VFD, disconnect the AC power supply, and wait a time no shorter than the
wait time designated on the VFD.
Step 2 Lever the fan holder off the VFD frame with a screwdriver and lift the hinged fan holder
slightly upward from its front edge. Open the cable clamp to loose the fan cable.
Step 3 Disconnect the fan cable. Remove the installation bracket.
Step 4 Install a new fan in the VFD in the reverse steps. Ensure that the air direction of the fan
is consistent with that of the VFD, as shown in the following figure.
Rotation
direction
Air
direction
Figure 6.1 Fan maintenance for Goodrive18 series VFD
Step 5 Power on the VFD.
6.1.3 Capacitor
6.1.3.1 Capacitor reforming
If the VFD has been left unused for a long time, you need to follow the instructions to reform
the DC bus capacitor before the reuse. The storage time is calculated from the date the VFD is
delivered.
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