❌ Converter Won't Start

Check:
• Verify input voltage at the converter terminals (should be 220-240V)
• Check that the breaker is on and properly sized
• Inspect the start button / switch for proper operation
• Verify all wire connections are tight at the panel and motor
• Check the voltage monitor / protection relay (M1) setting

⚡ Low or Unbalanced Voltage

Check:
• Measure voltage on all three phases under load
• Verify input voltage from your panel is adequate (not dropping under load)
• Check wire size — undersized wiring causes voltage drop
• Verify the idler motor lead connections are correct
• Make sure you're not overloading the converter beyond its HP rating

🔊 Unusual Noise or Vibration

Check:
• Ensure the idler motor is securely mounted
• Check for loose hardware or connections inside the panel
• Verify the motor bearings are not worn (humming or grinding noise)
• A slight hum is normal — excessive vibration is not

🔄 Converter Starts Then Shuts Off

Check:
• The voltage protection relay may be tripping — check M1 relay setting
• Input voltage may be too low (check at the panel)
• Converter may be overloaded — reduce the connected load
• Check for a short or ground fault in the output wiring

🌡️ Overheating

Check:
• Ensure adequate ventilation around the idler motor (don't block the fan)
• Verify you're not continuously overloading the converter
• Check ambient temperature — extreme heat reduces capacity
• Inspect the motor for dust/debris buildup blocking cooling

Our technical support team is available to walk you through any issue. Call (800) 417-6568 and have your converter model number ready.