Table 6-3. Troubleshooting

TROUBLE

PROBABLE

REMEDY

 

 

 

 

 

 

Wire feeder inoperative.

Circuit breaker CB5 or CB6 open.

Reset CB5 or CB6 according to

 

 

Section 6-2.

 

 

 

No remote control of con-

OUTPUT/CONTACTOR switch S10

Place S10 in the REMOTE position

tactor; open-circuit voltage

in the ON position.

(see Section 4-3).

present all the time when

 

 

engine is running.

 

 

 

 

 

No contactor control; no

CV-2 not correctly installed if done as

Review Section 3 and check all

weld output; no open-

a field kit.

connections.

circuit voltage.

 

 

Incorrect or poor connections to

Check and secure connections (see

 

 

REMOTE-5 receptacle RC3 or

Sections 3-2 and 3-3).

 

REMOTE-14 receptacle RC4.

 

 

 

 

 

Remote Contactor Control device.

Check and repair or replace remote

 

 

device as necessary.

 

 

 

 

Contactor control circuit board PC3.

Replace PC3 according to Section 6-3.

 

 

 

Improper current or volt-

Remote current and/or voltage control

Use only one CV-2 receptacle for

age level adjustment with

device connected at both receptacles.

remote current or voltage control.

remote control device.

 

 

 

 

 

No control of voltage;

CV-2 not correctly installed if done as a

Review Section 3 and check all

maximum or very low or

field kit (cables 19 and 30 from rectifier

connections, especially cables 19 and

no open-circuit voltage

SR3 reversed to Selector Switch cables).

30.

present.

 

 

 

Incorrect or poor connections to

Check and secure connections (see

 

REMOTE-5 receptacle RC3 or

Sections 3-2 and 3-3).

 

REMOTE-14 receptacle RC4.

 

 

 

 

 

CV/CC switch S12 in CC position.

Place S12 in the CV position (see

 

 

Section 4-1).

 

 

 

 

Remote Voltage Control device.

Check and repair or replace remote

 

 

device as necessary.

 

 

 

 

Voltage control circuit board PC4.

Replace PC4 according to Section 6-3.

 

 

 

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Miller Electric CV-2 owner manual Troubleshooting, Trouble Probable Remedy