troubleshooting (VOLTAGE REGULATOR)

Troubleshooting (Voltage Regulator)

Symptom

Possible Problem

Solution

 

Residual Voltage at regulator power input

Check wiring diagram for proper connections.

 

Flash generator speed. Refer to field flashing section

 

wires 3 and 4 below 10 VAC?

in generator manual.

 

 

 

 

Reduce acceleration time.

 

Accelerated time to rated speed too long?

Interrupt power input to regulator after achieving rated

Residual Voltage - No output

 

speed.

Field leads F1, F2 not connected?

Connect field leads F1, F2.

 

 

 

 

 

Power input leads not connected?

Connect power input leads 3, 4.

 

 

 

 

Blown or missing fuse?

Replace fuse.

 

 

 

 

Defective regulator?

Replace regulator.

 

 

 

 

Defective generator?

Consult generator manual.

 

 

 

 

Incorrect connections?

Check wiring diagram for proper connections.

 

 

 

 

Voltage Adjust turned down?

Rotate Voltage Adjust clockwise until the desired

 

voltage is reached.

Output Voltage Low

 

Remote Voltage Adjust is turned down?

Rotate remote Voltage Adjust clockwise until the

 

 

desired voltage is reached.

 

 

 

 

 

 

Defective regulator?

Replace regulator.

 

 

 

 

Voltage Adjust turned too high?

Rotate Voltage Adjust counterclockwise until the

 

desired voltage is reached.

Output Voltage High

 

Remote Voltage Adjust is turned too high?

Rotate remote Voltage Adjust counterclockwise until

 

 

the desired voltage is reached.

 

 

 

 

 

Output Voltage High - No

Defective regulator?

Replace regulator.

Adjustment

 

 

Remote Voltage Adjust

Voltage adjust wire connected backwards?

Reverse the wiring of the remote Voltage Adjust.

Operates Backwards

 

 

Generator Output Voltage

Stability Adjust not set properly?

Rotate the Stability Adjust clockwise until hunting stops.

Hunting

 

 

Poor regulation

Defective regulator?

Replace regulator.

page 40 —MQP20P STANDBY GENERATOR • operation and parts manual — rev. #1 (11/28/11)

Page 40
Image 40
Multiquip MQP20P manual Troubleshooting Voltage Regulator