Check Startup Buzzer
electrical
Description
The startup buzzer circuit is shorted or open; the unit alarms only.
Activation Conditions
The Buzzer (B) circuit is shorted or open.
Unit Behavior
Engine and Electric Operation: Alarm only.
Reset Conditions
Auto reset when Buzzer amp draw is normal, 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 Buzzer a. Inspect Buzzer and wire connections. Verify no damage to the buzzer. Verify no damage or corrosion to the connections. b. Check resistance of buzzer. Cannot be opened (infinite ohms) or shorted (Zero Ohms). 2. Check Buzzer Wiring - Inspect connector pins and terminals. (See wiring schematic Section 10.3.) Verify there is no physical damage to harness, and no damage, moisture, or corrosion in connectors. 3. Check Buzzer - Use Component Test mode (Refer to Section 5.2.4) to test actual current draw of the circuit. Buzzer provides audible signal. View current draw in Component Test mode screen. Verify current.