Today brings many years of experience to share with you. Fan coil units(FCUs) is the main component of air conditioning equipment. Fan coil units(FCUs) is a device that assembles a fan and a surface heat exchange coil. Strengthen the maintenance and management of the fan coil unit air conditioner, correctly eliminate the fan coil unit fault, and ensure the safe, efficient and energy-saving operation of the system. The following is a list of common fan coil unit faults and maintenance methods. (The reason and the excluded party are corresponding by serial number)
Fault 1: Fan coil units(FCUs) fan does not rotate
Cause: 1. Power failure 2, fan coil unit forgot to plug in the power supply 3. Low voltage 4, fan coil unit wiring error or terminal loose 5, fan coil unit motor failure 6, fan coil unit capacitor is not good 7. Poor contact of fan coil unit switch
Exclusion method: 1, find out the reason or wait for reply 2, insert the fan coil unit plug 3, find out the reason 4. Use multimeter to check the circuit and repair it. 5, use multimeter to check repair or replacement 6. Replacement 7, repair or replacement
Fault 2: Fan coil unit turns but does not produce air or has less air volume.
Cause: 1. Abnormal power supply voltage of fan coil unit 2. Reversal 3, fan coil unit tuyere has obstacles 4, fan coil unit air filter blockage
Exclusion method: 1, find out the reason 2, change the wiring 3. Removal 4. Cleaning
Fault 3, fan coil units(FCUs) air is not cold (or not hot)
Cause: 1. There is air in the fan coil unit 2, fan coil unit water supply cycle to stop 3, fan coil unit control valve closed 4. The fan coil unit valve is blocked by foreign matters
Exclusion method: 1. Discharge air from the exhaust valve of fan coil unit 2. Check the water pump 3. Open the fan coil unit control valve 4. Remove foreign bodies
Fault 4, condensation outside fan coil unit casing
Cause: 1, fan coil internal insulation damage 2. When assembling the fan coil casing, the thermal insulation layer contacted with the flame burned down 3, fan coil unit cold air leakage 4, indoor conditions causing condensation of fan coil units
Exclusion method: 1. Repair 2, don’t touch the flame, wrap the fan coil unit insulation layer again 3. Repair 4. Conditions for Removing Condensation on Fan Coil Unit
Fault 5. Blow-out of Foreign Matter on Fan Coil Unit
Cause: 1, due to corrosion caused by fan coil unit fan blade surface rust 2. The fan coil unit air filter is damaged and deteriorated 3, fan coil unit insulation material damage, deterioration 4. Too much dust in fan coil unit
Exclusion method: 1, replace the fan coil unit fan 2, replace the fan coil unit filter 3, replace the fan coil unit insulation materials 4, cleaning the fan coil unit inside
