POWERPATH PS-8-LP Installation Instructions Manual page 21

Trouble Condition Priority Identification
When multiple troubles exist the Control PC board Coded Trouble LED Indicators indicate the highest priority trouble.
Table 6 shows the priority sequence. When the highest priority is repaired, the next highest priority will automatically be
displayed. Table 6 lists the coded condition of these 5 LED indicators and the action required.
Coded Trouble LED's
"□" = OFF, "■" = ON
D8 D7 D6 D5 D4
□ □ □ □ □
□ □ □ □ □
□ □ □ □ ■
□ □ □ ■ □
□ □ □ ■ ■
□ □ ■ □ □
□ □ ■ □ ■
□ □ ■ ■ □
□ □ ■ ■ ■
□ ■ □ □ □
□ ■ □ □ ■
□ ■ □ ■ □
□ ■ □ ■ ■
□ ■ ■ □ □
P84905-002 A
Table 6: Control PC Board Trouble Priority Identification
Location Priority
1. NAC 1
2. NAC 2
3. NAC 3
4. NAC 4
5. AUX
6. CC1
7. CC2
8. SYNC BUS
Table 7: Control PC Board Coded Trouble Identification
Trouble Trouble
Locator Condition
D3
□
No Fault No Fault
■
Ground Fault Ground Fault
□
NAC Output 1 Short
□
NAC Output 1 Open
□
NAC Output 1 Current Limit
□
NAC Output 2 Short
□
NAC Output 2 Open
□
NAC Output 2 Current Limit
□
NAC Output 3 Short
□
NAC Output 3 Open
□
NAC Output 3 Current Limit
□
NAC Output 4 Short
□
NAC Output 4 Open
□
NAC Output 4 Current Limit
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Location Displayed Priority
1. CURRENT LIMIT
2. SHORT
3. OPEN
4. GROUND FAULT
No Action Required.
Shut off AC Mains Power to unit.
Open cabinet door. Press and hold SW5, Ground Fault Locator
Switch for 5 seconds. Release switch.
Check for a wiring short. Check for a shorted or improperly
wired NAC Appliance. (If an appliance is wired + to – and – to +
a short trouble will be indicated.
Check OUT1 terminals for good connections.
circuit wiring for continuity. Check NAC circuit for 10K Ohm
EOLR.
Reduce the number of NAC Appliances on Output1.
Check for a wiring short. Check for a shorted or improperly
wired NAC Appliance. (If an appliance is wired + to – and – to +
a short trouble will be indicated.
Check OUT2 terminals for good connections. Check NAC circuit
wiring for continuity. Check NAC circuit for 10K Ohm EOLR.
Reduce the number of NAC Appliances on Output1.
Check for a wiring short. Check for a shorted or improperly
wired NAC Appliance. (If an appliance is wired + to – and – to +
a short trouble will be indicated.
Check OUT3 terminals for good connections.
circuit wiring for continuity. Check NAC circuit for 10K Ohm
EOLR.
Reduce the number of NAC Appliances on Output1.
Check for a wiring short. Check for a shorted or improperly
wired NAC Appliance. (If an appliance is wired + to – and – to +
a short trouble will be indicated.
Check OUT4terminals for good connections. Check NAC circuit
wiring for continuity. Check NAC circuit for 10K Ohm EOLR.
Reduce the number of NAC Appliances on Output1.
Action
Check NAC
Check NAC
Sheet 21 of 37