After the unit is powered on for the first time, it enters the compressor preheating state. To quickly perform power-on commissioning, you can manually shut down the compressor preheating.

The statement is false. Compressor preheating is a critical, mandatory safety procedure. It uses a crankcase heater to warm the compressor's lubricating oil, ensuring that any liquid refrigerant dissolved in the oil vaporizes before startup. Bypassing or manually shutting down this process can lead to liquid slugging when the compressor starts, which can cause severe mechanical damage. The system's control logic is designed to prevent compressor operation until the preheating cycle is complete, and it should not be overridden.

A. The controller does not allow manual shutdown of initial preheating; selecting “Stop heating” is greyed-out until the timer expires (Quick Deployment Guide p.36-37).

1. Huawei NetCol Series Smart Cooling Product Technical Principles. The "Compressor Protection" chapter details the function of the crankcase heater, explaining it is essential to prevent liquid compression and subsequent damage. The control system enforces a mandatory preheating time upon power-on.