52031

The project is not loaded (For ER series, version V5.0)

52031

Alarm cause: 1. When opening a program, the project was found not to be loaded 2. When unloading a program, the project was found not to be loaded 3. When unloading a project, the project was found not to be loaded

Corrective measures: Check whether the relevant project is loaded

Applicable equipment

Source: Fault JSON · ESTUN_fault_codes_zh_en.json · SHA-256 e318b3bb20315d070a7f50bd7649bf7dfd7d178030a4f7c736a5aa22f48095f9 · 52031

Brand	ESTUN
Updated	2026-10-27

52031

The project is not loaded (For ER series, version V5.0)

52031

Alarm cause: 1. When opening a program, the project was found not to be loaded 2. When unloading a program, the project was found not to be loaded 3. When unloading a project, the project was found not to be loaded

Corrective measures: Check whether the relevant project is loaded

Applicable equipment

Source: Fault JSON · ESTUN_fault_codes_zh_en.json · SHA-256 e318b3bb20315d070a7f50bd7649bf7dfd7d178030a4f7c736a5aa22f48095f9 · 52031

Brand	ESTUN
Updated	2026-10-27