The reason why the FCU has such high comfort is not only the working principle and working medium, but also the working condition design. According to the different needs of different occasions, the design and debugging are also different, which can be said to be tailored for different environments. Therefore, the FCU has a particularly high comfort. Unlike traditional air conditioners, any space is a fixed and unified work, so the comfort will be lacking.
Fan coil unit debugging is the most important step before fan coil unit is used. It should be noted that the debugging of fan coil unit can only be carried out on the basis of qualified debugging of the air conditioning outdoor unit.
How to Debug FCU: 
First is the preparation work, adjust the relevant personnel, and then is the preparation of instruments, FCU debugging will use instruments such as ammeter, pressure gauge, multimeter, thermometer, etc.
Commissioning steps of fan coil unit:
First, the FCU pipe matching pipeline debugging
According to different working conditions and heating working condition standards, the fan coil unit water supply temperature is 27 degrees Celsius, and the fan coil unit return water temperature is 50 degrees Celsius.
Refrigeration standard, fan coil unit water supply temperature 7 degrees Celsius, fan coil unit return water temperature 12 degrees Celsius
Pipeline standards require that there is no water leakage
Second, the FCU electrical control part debugging
The insulation of fan coil unit must be ensured, and the insulation resistance between the charged part and the non-charged metal part must not be less than 2 ohms.
The resistance value between the exposed metal part and the ground terminal shall not be greater than 0.1 ohm;
Third, FCU wind speed, noise, air volume debugging
How to debug the fan coil unit, matters needing attention in the debugging of fan coil unit, the debugging of each fan coil unit shall be carried out after installation, and random testing is not allowed.