Check Engine Preheat Circuit
engine
Description
The engine preheat circuit amperage was below 25 Amps or above 70 Amps after 14 seconds of glow time, and the unit gives alarm only.
Activation Conditions
Engine Operation: Intake Air Heater amperage is less than 25 Amps, or greater than 70 Amps after 14 seconds of glow time (NOTE: This can only occur when the Engine Coolant Temperature is below 50°F (11°C) due to preheat time allowed. Refer to Table 4–1 for preheat times. Electric Operation: This alarm will not activate in Electric Operation.
Unit Behavior
Engine and Electric Operation: Alarm Only
Reset Conditions
Auto Reset if amperage is between 4 to 55 amps for at least 14 seconds during the glow cycle, or alarm may be manually reset via keypad or by turning the unit off, then back on again.
Corrective Actions
Refer to the manual troubleshooting procedure.