Carter 323 warm air is not hot.

4 reasons. There are four reasons why the heater of Carter 32c is not hot, namely, the water temperature is too low, the baffle is not closed properly, the thermostat is not installed, and the heater water tank is blocked. Caterpillar excavator 323DL is a new excavator designed and produced by Caterpillar Company with heavy-duty design to provide more powerful power for high-productivity engineering applications.