1. There is no output, no voltage indication or no start when the machine is turned on. Overvoltage or undervoltage maintenance
1. Adjust the internal output voltage adjustable potentiometer
2. The wrong phase and the lack of phase are maintained, and the two phases are arbitrarily replaced by three phases
3. The main control circuit board is broken 3. Replace
4. The output AC is broken 4. Replaced
Second, the output voltage is abnormal
1. It is the same modulation regulator 1, and the sub-modulation regulator is replaced
2. Exceed the voltage stabilization scale of the regulator itself 2. Replace the wide-scale regulator
3. The travel limit switch is broken 3. Replace
4. The phase circuit board is broken 4. Replace
5. Servo motor incineration 5. Replacement
3. Unstable voltage
1. Exceed the voltage stabilization scale of the regulator itself 1. Replace the wide-scale voltage regulator
2. The travel limit switch is broken 2. Replace
3. The circuit board is broken 3. Replaced
4. Servo motor incineration 4. Replacement
Fourth, tripping without reason at work
1. The main gate capacity is selected to be smaller, and the appropriate capacity air switch is replaced
2. The air switch is broken 2. Replaced
3. The surge voltage is too high instantaneously 3. Replace the contactless high-precision voltage regulator
Fifth, the buzzing sound inside the voltage regulator is very loud
1. Overload with load 1. Reduce the equipment after it
2. There is debris inside 2. Remove the debris
6. The squeak inside the regulator is loud
1. The voltage is unstable 1. Normal
2. There is ash and dirt on the surface of the carbon brush 2, and the dust and dirt are removed
7. The electric regulator cannot actively operate after a power failure
1. The full active toggle switch is not open 1
2. Circuit board failure 2. Replacement
8. There is no boost or step-down according to the panel (non-power regulators have no such function)
1. Servo motor incineration 1. Replacement
2. The travel limit switch is broken 2. Replace
3. Circuit board incineration 3. Replacement
4. Manual, active knob is not open to manual 4, open to manual
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