Why the water chiller unit is beeping and displays E4 error code?

If the water chiller unit which cools laser fabric cutting machine displays E4 error code and water temperature alternatively with beeping, it might probably be the malfunction of the room temperature sensor. In this case, please find the connection terminal between room temperature sensor and temperature controller and the connection terminal between water temperature sensor and temperature controller. Switch these two terminals, connect and check:

1. If the beeping stops, that means the connection terminals are in poor contact. In this case, reconnect the terminals to the right place.

2. If there is E5 error code, that means the water temperature sensor breaks down. If there is E4 error code, that means the temperature controller malfunctions;

3. If there is E4 and E5 error code at the same time, that means you need to change the room temperature sensor, water temperature sensor and temperature controller all together.

If the above instruction is not helpful, please contact techsupport@teyu.com.cn and we are ready to help. 

In respect of production, S&A Teyu has invested the production equipment of more than one million RMB, ensuring the quality of a series of processes from the core components (condenser) of industrial chiller to the welding of sheet metal; in respect of logistics, S&A Teyu has set up logistics warehouses in the main cities of China, having greatly reduced the damage due to the long-distance logistics of the goods, and improved transport efficiency; in respect of after-sales service, all the S&A Teyu water chillers cover Product Liability Insurance and the warranty period is two years.