Miller Auto Invision 2, Owner'S Manual

Page: 86 / 128

OM-196 188 Page 80
13-11. Diagnostic LED’s On Motor Board PC13
LED Status Diagnosis
1 On Indicates motor reverse relay is energized.
Off Indicates motor reverse relay is not energized.
2 On Indicates bus voltage is present.
Off Indicates bus voltage is not present.
3 On Indicates microprocessor is operational.
Off Indicates microprocessor is not operational.
4 On Indicates tachometer feedback signal is present.
Off Indicates tachometer feedback signal is not present.
5 On Ind5 volts dc is present on motor board PC13.
Off Ind5 volts dc is not present on motor board PC13.
6 On Ind15 volts dc is present on motor board PC13.
Off Ind15 volts dc is not present on motor board PC13.
7 On Indicates auxiliary forward signal is present.
Off Indicates auxiliary forward signal is not present.
8 On Indicates auxiliary output signal is present.
Off Indicates auxiliary output signal is not present.
13-12. Troubleshooting
Trouble Remedy
No weld output; unit completely
inoperative. Place line disconnect switch in On position (see Section 3-8).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 3-8).
Check for proper input power connections (see Section 3-8).
No weld output; meter display On. Check, repair, or replace remote control.
Unit overheated. Allow unit to cool with fan On (see Section 4-5).
Check voltmeter/ammeter Help displays.
Erratic or improper weld output. Use proper size and type of weld cable (see Section 3-5).
Clean and tighten all weld connections.
No 115 volts ac output at duplex
receptacle, Remote 14 receptacle. Reset circuit breaker CB1 (see Section 3-6).
No 24 volts ac output at Remote 14 re-
ceptacle. Reset circuit breaker CB2 (see Section 3-6).