Today am going to show you how to repair all the inverter brands that uses the control boards below.
MUST INVERTERS, FELICITY INVERTERS, KAMA POWER, POWER STAR, ETC. and some other popular inverters uses the same control board but only branded with different names.
POWER INVERTER REPAIRS 3
MUST, POWER STAR, FELICITY INVERTER
FAULTS ON THESE INVERTERS
The inverter displays every fault with a unique code, these fault codes starts from 01 to 09. Explanation of the error code is shown below;
INVERTER ERROR CODE O1 AND ERROR CODE 04
These errors means there is either a problem with your fan or your system temperature is very high.
Error 01 can also occur if the temperature sensing NTC shorts.
This fault usually occurs when the fan PWM clock pin fails (The middle pin of the 12V Fan).
Solution:
2. Change fan
3. check the board for components in the circuit below;
ERROR 02 (overload)
Overload simply means given more load to the inverter than its designed for.
In case there is no such overloading and the system is saying overload then change the resistors in the circuit below
ERROR CODE 3 AND ERROR 7 (OUTPUT SHORT)
This code means either your drive signal is not going through or output mosfets has failed.
solution
1. Check all mosfets for failure
2. Check all gate resistors for burnt and opening. (47 ohms each resistor)
3. check the drive circuit below
ERROR CODE 5
This error means your battery is below a set value and the batteries needs recharge.
ERROR CODE 08 AND ERROR CODE 09
check the battery sense circuit below and increase or reduce the related resistors.
THANK YOU FOR READING.
leave your questions and comments in the comment box and I will reply.
