H20-923_V1.0 practice question 6 of 15

Which of the following statements is false about how to start an electric heater?

Full set: 60 questions
Answer options
A: If "Dehumidification & Low temperature heating" is selected, the electric heater determines whether to start based on the temperature requirements when the dehumidification or heating conditions are met.
B: When "Dehumidification heating" is selected, the electric heater determines whether to start based on the current temperature only when the dehumidification function is enabled.
C: When "Dehumidification heating", "Low temperature heating", or "Dehumidification & Low temperature heating" is selected, if the temperature in the equipment room is low, the air conditioner automatically starts the heating function to meet the temperature control requirements of the equipment room. Correct answer
D: When "Low temperature heating" is selected, the electric heater determines whether to start only based on the temperature requirements no matter whether the dehumidification function is enabled.
Correct Answer:
C. When "Dehumidification heating", "Low temperature heating", or "Dehumidification & Low temperature heating" is selected, if the temperature in the equipment room is low, the air conditioner automatically starts the heating function to meet the temperature control requirements of the equipment room.
Explanation

Statement C is false because the electric heater's startup logic is not solely based on low temperature. It depends on the specific mode selected. For instance, in "Dehumidification heating" mode, the heater will only consider starting if the dehumidification function is active, regardless of how low the room temperature is. The other options (A, B, D) correctly describe the specific logic for each corresponding operational mode, where conditions other than just low temperature (like dehumidification status) are critical triggers.

Why Incorrect

A. This statement is true. In the combined mode, the heater activates if either dehumidification or low-temperature heating conditions are met, based on temperature requirements.
B. This statement is true. In "Dehumidification heating" mode, the heater's operation is contingent on the dehumidification function being enabled first.
D. This statement is true. In "Low temperature heating" mode, the heater's operation is based only on temperature, irrespective of the dehumidification function's status.

References

- Huawei NetCol5000-A(025, 042, 065) In-row Air Cooled Smart Cooling Product User Manual. (2022). Section 5.4.2 "Setting Running Parameters", Table 5-10 "Electric heater startup mode". This section details the specific logic for each heater mode, confirming that C is an incorrect oversimplification.

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