62-11640 7–92
05009 CHECK STANDBY CONTACTOR ONE (PSCON)
• ACTIVATION: Standby contactor one (PSCON) circuit is shorted or open.
• UNIT CONTROL: Engine Operation: Alarm condition only.
Electric Operation: Required Shutdown
• RESET CONDITION: 15 Minutes have elapsed since activation or alarm may be manually reset via key-
pad or by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Check PSCON
a. Inspect generator contactor coil and terminals. Verify there is no damage to coil, and no damage
or corrosion at terminals.
b. Check contactor coil resistance. Refer to Section 2.11 for correct electrical values. Cannot be
opened (infinite ohms), shorted (Zero Ohms) or shorted to ground.
c. Check amp draw of coil. Refer to Section 2.11 for correct electrical values. Use ammeter.
2. Check PSCON Current Draw
Use Component Test Mode to test actual current draw of the circuit. (Refer to Section 5.2.4.) Refer
to Section 2.11 for correct electrical values. View current draw in Component Test Mode screen.
3. Check PSCON Wiring
a. Inspect harness & control box connector pins & terminals. (See wiring schematic Section 10.3)
Verify there is no physical damage to harness.
b. Check PSCON loose wires or open. Verify there is no damage, moisture, or corrosion in connectors.
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