Drain masts heating status: The drain masts are heated when 115VAC power is applied to the controller, regardless of the controller ON/OFF state.

• A. Not applicable
• B. True
• C. False
• D. Only when the controller is ON

Answer: (B)

The heating of the drain masts is powered by the 115 VAC supply, and this heater runs whenever that power is present, not based on the controller’s ON/OFF command. In other words, the heater is tied to the power input itself, so as long as 115 VAC is applied to the controller, the drain masts stay heated regardless of whether the controller is currently ON or OFF. This design helps prevent freezing or blockage of the drain paths in cold conditions. So, the statement is true because the heating is independent of the controller’s ON/OFF state and depends solely on having power applied.