Miller Panther 307 Owner's Manual page 39

Trouble
Amperage Adjustment Control does not
change output
No Remote Amperage control.
B. Generator Power
Trouble
Low or no AC power output.
No generator power output; weld out-
put okay.
No generator power or weld output.
Low power output.
High power output.
Erratic power output.
Engine does not go to low (idle) speed
with Engine Speed Switch in Run/Idle
position.
Engine does not go to high (run) speed
when generator power or large weld
load is applied with Engine Speed
switch in Run/Idle position.
Engine uses oil during run-in period;
wetstacking occurs.
Amperage Adjustment Control is defective or disconnected. Have Factory Authorized Service Agent
check connections or replace control.
Have Factory Authorized Service Agent check WCR (Weld Current Regulator board) and thyristor.
Place Amperage Control switch in Remote position.
Check and secure connections to Remote 3 receptacle RC1.
Repair or replace remote control device.
Have Factory Authorized Service Agent check Amperage Control Switch, AVR (Automatic Voltage
Control board), field excitation circuit, and the rotor.
GFCI (Ground Fault Circuit Interrupter) tripped or poor connections to them. Reset GFCI; check and se-
cure their connections.
Reset Ground Fault Circuit Interceptors (see Section 6-1).
Check fuse EF1, and replace if necessary (see Section 7-9).
Have Factory Authorized Service Agent check AVR (Automatic Voltage Regulator board).
Disconnect equipment from generator power receptacles during start-up.
Check fuses EF1 and EF2, and replace if necessary (see Section 7-9).
Have Factory Authorized Service Agent check field excitation circuit, field current control AVR (Automatic
Voltage Regulator board), and the rotor.
Check and clean air cleaner as necessary (see Section 7-5).
Check and adjust engine speed (see Section 7-8).
Have Factory Authorized Service Agent check AVR (Automatic Voltage Regulator board).
See engine manual.
Check and adjust engine speed (see Section 7-8).
Have Factory Authorized Service Agent check AVR (Automatic Voltage Regulator board).
Check receptacle wiring and connections.
Check governor according to engine manual.
Have Factory Authorized Service Agent check AVR (Automatic Voltage Regulator board).
Be sure Engine Speed Switch is in Run/Idle position.
Remove all weld and generator power loads.
Turn off remote device connected to Remote 3 receptacle.
Check for obstructed movement of throttle solenoid linkage.
Have Factory Authorized Service Agent check timer module and slow down timer.
Place Engine Speed switch in the Run position. Have Factory Authorized Service Agent check unit.
Dry the engine (see Section 10 and engine manual).
Remedy
Remedy
OM-4408 Page 35