7.2 Indications of alarms and faults
Faults are indicated by indicators (you can refer to 5.4 Operating the inverter through the keypad).
When the TRIP indicator is on, the alarm or fault code displayed in the keypad indicates the inverter
is in exception state. This chapter covers most of the alarms and faults, and their possible causes and
corrective measures, if you cannot figure out the alarm or fault causes, contact local IMO office.
7.3 Fault reset
You can reset the inverter through the STOP/RST key on the keypad, digital inputs, or by cutting off
the inverter power. After faults are removed, the motor can be started again.
7.4 Fault history
P07.27–P07.32 record the types of last six faults; P07.33–P07.40, P07.41–P07.48, and P07.49–
P07.56 record the running data of the inverter when the latest three faults occurred.
7.5 Inverter faults and solutions
When fault occurred, process the fault as shown below.
1. When inverter fault occurred, confirm whether keypad display is improper? If yes, contact IMO.
2. If keypad works properly, check the function codes in P07 group to confirm the corresponding
fault record parameters, and determine the real state when current fault occurred through
parameters.
3. Check the table below to see whether corresponding exception states exist based on the
corresponding corrective measures.
4. Rule out the faults or ask for help from professionals.
5. After confirming faults are removed, reset the fault, and start running.
7.5.1 Details of 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 inverter fault type codes read through communication.
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