Does it make noise and heat during the cooling process ?

YES, this means that the compressor is working normally, but the noise will never affect your daily life.

Heat is produced by compressor cooling, and heat dissipation is the key to effective cooling.

Chiller is leaking ?

Incorrect pipe installation: check the pipe connection, pay attention to the sealing rings.

Long-term use may cause the water pipe connection loose, and water leakage may occasionally occur: try to add some vacuum grease to the pipe.

Chiller is not cooling ?

Please note that only when the water circulation is normal, the chiller can effectively cooling water.

If no circulation: the pump is placed too high, causing the water flow pressure to be too high or the pump is broken.

The temperature displayed on the screen is inconsistent with the water temperature measured by other thermometers ?

Influence of external factors: such as the lights in the fish tank

Temp test position: the chiller detects the overall water temp while the thermometer measures at a certain location, uneven.

The controller is wrong: try temperature calibration F2

The chiller is cooling worse than before, is it broken?

The cooling effect of the chiller is affected by the amount of water, size of the fish tank, ambient temperature, etc. Generally speaking the chiller can be 5-10 degrees lower than the ambient temperature.