Only qualified electricians are allowed to maintain the inverter. Read the 
safety instructions in chapter Safety precautions before working on the 
inverter. 
8.2 Alarm and fault indications 
Fault is indicated by LEDs. See Operation Procedure. When TRIP light is on, an alarm or 
fault message on the panel display indicates abnormal inverter state. Using the information 
reference in this chapter, most alarm and fault cause can be identified and corrected. If not, 
contact with the INVT office.   
8.3 How to reset   
The inverter can be reset by pressing the keypad key STOP/RST, through digital input, or by 
switching the power light. When the fault has been removed, the motor can be restarted.   
8.4 Fault history   
Function  codes  P07.25~P07.30  store  6  recent  faults.  Function  codes  P07.31~P07.38, 
P07.39~P7.46, P07.47~P07.54 show drive operation data when the latest 3 faults occurrs. 
8.5 Fault instruction and solution   
Do as the following after the inverter fault:   
1. Check to ensure there is nothing wrong with the kepad. If not, please contact with the local 
INVT office.   
2. If there is nothing wrong, please check P07 and ensure the corresponding recorded fault 
parameters to confirm the real state when the current fault occurs by all parameters.   
3. See the following table for detailed solution and check the corresponding abnormal state.   
4. Eliminate the fault and ask for relative help.   
5. Check to eliminate the fault and carry out fault reset to run the inverter.