Error: "Output over voltage"

Output over voltage

Remedy

1. Check the „over voltage limit“ in the basic-setup.
        Password for over voltage (max. 900V) = “MENU-DOWN-ENTER-UP-DOWN-UP”
    
2. Check the “voltage limit” in the basic setup.
        Password for “voltage limit” (max. 565V) = “UP-DOWN-ENTER-UP-MENU-DOWN”
    
3. Check the input voltage (400Vac)
    
4. Is the wiring between C-bar (voltage measuring) and HF controller correct?
    
5. Check the voltage signal over the C-bar. The voltage peaks should not be higher than the “over voltage limit”. To measure you need a scope meter and a differential probe or a scope with isolation to ground. See the attached pictures of tools, where to connect and how the signal looks if everything is fine.
    
6. Check if the IC OC17 (Type 6N137) is faulty.
        
    
7. Try to start the generator. If not successful, open a ticket.

Possible reason choke coil defective

• Separate the choke coil from the original circuit and measure with an inductor → if the inductance is reduced a lot it mean is defective
   
• original value = 320 microHenry