1. Plug failure: The plug of the sprinkler irrigation machine may become loose or have poor contact, causing the sprinkler irrigation machine to malfunction.

2. Water pump failure: The water pump is one of the core components of the sprinkler system and may experience problems such as insufficient water output, sudden water stoppage, excessive power consumption, noise and vibration. It needs to be repaired and replaced.

3. Nozzle malfunction: The nozzle is a critical component of the sprinkler system and may experience abnormal tongue shape, insufficient range, water leakage from rotating parts, or slow rotation of the rocker arm nozzle. It is necessary to perform operations such as grinding, replacing the nozzle, removing foreign objects, repairing or replacing the rectifier.

4. Pipeline faults: The layout of the pipeline system should comprehensively consider factors such as the water conservancy system, water source location, terrain, wind direction, and crop layout. Pipeline blockages, leaks, and other faults may occur, which need to be cleaned and repaired.

5. Control system failure: The control system of the sprinkler may malfunction, causing the sprinkler to malfunction and requiring maintenance and replacement.

6. Power failure: The sprinkler irrigation system requires a power supply to function properly. If the power supply fails, the sprinkler irrigation system will not be able to function properly.

The above are possible malfunction manifestations of sprinkler irrigation machines. If a malfunction occurs, timely maintenance and replacement are necessary to ensure the normal operation of the sprinkler irrigation machine.