Check Standby Contactor 2 (PSCON2)
electrical
Description
Standby contactor one (PSCON2) circuit is shorted or open, and engine operation only alarms while electric operation requires shutdown.
Activation Conditions
Standby contactor one (PSCON2) circuit is shorted or open.
Unit Behavior
Engine Operation: Alarm condition only. Electric Operation: Required Shutdown
Reset Conditions
15 Minutes have elapsed since activation or alarm may be manually reset via keypad or by turning the unit off, then back on again.
Corrective Actions
1. Check PSCON2 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 PSCON2 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 PSCON2 Wiring a. Inspect harness and control box connector pins and terminals CCB-13 to PSCON2-A1. (See wiring schematic Section 10.2) Verify there is no physical damage to harness. b. Check PSCON2 for loose wires or open. Verify there is no damage, moisture, or corrosion in connectors.