Voltmeter/Ammeter Help Displays; Troubleshooting - Miller Dynasty 300 SD Owner's Manual

7-3. Voltmeter/Ammeter Help Displays

V A
1
HE.L P−0
.
All directions are in reference to the
front of the unit. All circuitry referred to
is located inside the unit.
1 Typical Help Display (For Help 0)
• Help 0 Display
Indicates a short in the thermal protection
circuitry located on the left side of the unit.
Contact a Factory Authorized Service
Agent if this display is shown.
• Help 1 Display
Indicates a malfunction in the primary pow-
er circuit caused by an overcurrent condi-
tion in the primary IGBT switching circuit.
Contact a Factory Authorized Service
Agent if this display is shown.
• Help 2 Display
Indicates an open in the thermal protection
circuitry located on the left side of the unit.
Contact a Factory Authorized Service
Agent if this display is shown.
• Help 3 Display
Indicates the left side of the unit has over-
heated. The unit has shut down to allow the
fan to cool it (see Section 4-3). Operation
will continue when the unit has cooled.

7-4. Troubleshooting

Trouble
No weld output; unit completely
inoperative.
No weld output; meter display On.
Erratic or improper weld output.
No 115 volts ac output at duplex recep-
tacle.
Fan not operating.
OM-358 Page 46
• Help 4 Display
Indicates an open in the thermal protection
circuitry located on the right side of the unit.
Contact a Factory Authorized Service
Agent if this display is shown.
• Help 5 Display
Indicates the right side of the unit has over-
heated. The unit has shut down to allow the
fan to cool it (see Section 4-3). Operation
will continue when the unit has cooled.
• Help 6 Display
Indicates that the input voltage is too low
and the unit has automatically shut down.
Operation will continue when the voltage is
within the operating range (±10%). Have
an electrician check the input voltage if this
display is shown.
• Help 7 Display
Indicates that the input voltage is too high
and the unit has automatically shut down.
Operation will continue when the voltage is
within the operating range (±10%). Have
an electrician check the input voltage if this
display is shown.
• Help 8 Display
Indicates a malfunction in the secondary
power circuit of the unit. There is a high
open circuit condition. Contact a Factory
Authorized Service Agent if this display is
shown.
• Help 9 Display
Indicates a short in the thermal protection
circuitry located on the right side of the unit.
Contact a Factory Authorized Service
Agent if this display is shown.
Place line disconnect switch in On position (see Section 4-12).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 4-12).
Check for proper input power connections (see Section 4-12).
If using remote control, be sure correct process is enabled to provide output control at Remote 14
receptacle (see Sections 5-1 and 4-7).
Input voltage outside acceptable range of variation (see Section 4-11).
Check, repair, or replace remote control.
Unit overheated. Allow unit to cool with fan On (see Section 4-3).
Use proper size and type of weld cable (see Section 4-6).
Clean and tighten all weld connections.
Reset supplementary protector CB1 (see Section 4-5).
Check for and remove anything blocking fan movement.
Have Factory Authorized Service Agent check fan motor.
• Help 10 Display
Indicates torch trigger is depressed. Re-
lease trigger to continue.
• Help 12 Display
Indicates a non-allowable set-up on the
front panel.
• Help 13 Display (LX Models Only)
Output disable open causing weld output
to stop, but gas continues to flow.
Help 21 Display
w
Indicates voltage or current feedback has
been detected with contactor off. Contact
a Factory Authorized Service Agent if this
display is shown.
w Help 22 Display
Voltage and current not present with con-
tactor on. Contact a Factory Authorized
Service Agent if this display is shown.
Remedy