Alternator Not Charging
electrical
Description
Unit was running and current flow was less than -1.0 amps discharge between alternator and battery for three continuous minutes; alarm only or shutdown and alarm if configured.
Activation Conditions
Unit is running and the current flow is less than -1.0 amps (discharge) between the alternator and the battery for three continuous minutes.
Unit Behavior
Alarm only, or if Alternator Check Shutdown Configuration is set to “YES” shutdown and alarm.
Reset Conditions
Auto reset (if not shutdown) when alternator is charging or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
Corrective Actions
1. Check Water Pump/Alternator Belt Tension and Condition: Verify that there is no glazing, cracking or slipping. Refer to Section Figure 8.13 . Replace if required. 2. Check Alternator Wiring and Output a. Check output and ground wiring (with unit OFF). Ground from alternator B- terminal to GND RNG2. Positive from alternator B+ terminal to ALT+. b. Check output (with unit running). When the unit is started, voltage at the battery will begin near 12.0 VDC and slowly rise toward 13.5 VDC as the battery charges. 3. Check for Add-on Equipment Drawing too Much Current: Check amperage of added-on components and accessories. Total current draw including the actual unit current draw and all add-on components and accessories must be less than alternator rating. 4. Perform Pretrip Check: Clear Active Alarm list, run Pretrip and check for any new alarms. Any active alarms must be corrected and cleared before proceeding.