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10-2013
5.4
5. Troubleshooting
Code 146 - Engine Coolant Temperature Above
Normal (Warning)
Logic:
Engine coolant temperature has exceeded 225 °F (107.2 °C) for greater than 5
seconds.
Possible Cause:
1. High ambient temperature
2. Enclosure air intake blocked
3. Coolant level is below specification
4. Radiator core fouled
5. Enclosure air discharge blocked
6. Broken fan belt
Diagnosis and Repair:
1. High ambient temperature.
a. Reduce loads or recirculation of discharge air to generator in elevated
ambient.
2. Enclosure air intake blocked.
a. Inspect for dirt, debris, or obstructions.
b. Remove blockage or snow/ice buildup as applicable.
3. Coolant level is below specification.
a. Check coolant level.
b. Add coolant as necessary.
4. Radiator core fouled.
a. Inspect for dirt, debris, or obstruction on core.
b. Remove obstructions or debris, and clean the radiator core.
5. Enclosure air discharge blocked.
a. Inspect for dirt, debris, or obstructions.
b. Remove blockage or snow/ice buildup as applicable.
6. Broken fan belt.
a. Inspect fan belt.
b. Replace fan belt.
A045R242 (Issue 2)
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