Goodrive270 series VFD for fan and pump Troubleshooting
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7 Troubleshooting
7.1 What this chapter contains
The chapter tells you how to reset faults and check faults history. A complete list of alarms and fault
information as well as possible causes and corrective measures are presented in this chapter.
 Only trained and qualified professionals are allowed to carry out the operations
mentioned in this chapter. Please carry out operations according to instructions
presented in chapter 1 Safety precautions.
7.2 Indications of alarms and faults
Faults are indicated by indicators. See section 5.3 LED keypad (BOP-270) display and operation.
When the TRIP indicator is on, the alarm or fault code displayed on the keypad indicates the VFD is
in abnormal state. This chapter covers most of the alarms and faults, and their possible causes and
corrective measures. If you cannot find out the causes of alarms or faults, contact local INVT office.
7.3 Fault reset
The VFD can be reset by pressing the keypad key STOP/RST, digital inputs, or by cutting off the VFD
power. After faults are removed, the motor can be started again.
7.4 Fault history
The function codes from P07.27 to P07.32 record the types of the last six faults. The function codes
P07.33–P07.40, P07.41–P07.48, P07.49–P07.56 record the running data of the VFD at the last three
faults.
7.5 Faults and solutions
Do as follows if the VFD encounters a fault:
1. Check whether there is any exception on the keypad. If yes, contact the local INVT office.
2. If keypad works properly, check the function codes in P07 group to check the fault record
parameters to determine the real state when the fault occurred.
3. See the following table for a detailed solution and check for exceptions.
4. Rectify the fault or ask for help.
5. Ensure the fault has been rectified, perform fault reset, and run the VFD again.
7.5.1 Faults and solutions
Note: The numbers enclosed in square brackets such as [1], [2] and [3] in the Fault type column in
the following table indicate the VFD fault type codes read through communication.
[1] Inverter unit
U-phase protection
ACC too fast.
IGBT module is damaged.
Increase ACC time.
Replace the power unit.
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