CLIMATE 5000 VRF MDCI Series – All DC Inverter Outdoor Units (Three phase) MDCI20-3, MDCI22-3, MDCI26-3 User manual Before using your air conditioning unit, please read this manual carefully and keep it for future reference.
Indoor unit Outdoor unit Air outlet Air inlet Fig. 1 Fixing support Refrigerant pipework connector Connection pipework NOTE All the pictures in this manual are for explanation purposes only. They may be slightly different from the air conditioning unit you have purchased (dependent on model).
IMPORTANT SAFETY INFORMATION | 3 CONTENTS PAGE When the unit is running fans will be operating. Keep hands away from fan blades to prevent injury. IMPORTANT SAFETY INFORMATION ..........3 Ensure cleaning products do not come into contact with any of the DESCRIPTION OF UNIT ...............
4 | DESCRIPTION OF UNIT Ensure hands are free from contaminants and are dry prior to performing Ensure the communication signal wires do not touch bare copper pipe- any electrical maintenance work. work. The refrigerant circuit will get hot and melt the cables. Do not touch the heat exchanger fins.
OPEARTING CONDITIONS | 5 NOTE NOTE • On completion of installing the air conditioning unit, ensure the Do not attempt to re-activate the electrical power supply to the unit via electrical power supply is on to the unit for the minimum of 12hrs the protection device until the problem has been solved.
6 | ERROR CODES • 4.7 Defrost in the heating operation During operation, the fan motor in the outdoor unit may stop running under high temperatures. • During heating operation, frost can accumulate on the outdoor unit. • When one unit is selected in fan mode and others are heating, the fan To increase efficiency, the unit will start defrosting for approximately may stop to prevent hot air being moved around.
NORMAL OPERATION OF UNIT | 7 6. NORMAL OPERATION OF UNIT Symptom 4.2: Indoor unit, outdoor unit A continuous low hissing sound is heard when the system is in ■ Symptom 1: The system does not operate operation. This is the sound of refrigerant gas flowing through both indoor and The air conditioning unit does not start immediately after the unit has ■...
8 | TROUBLESHOOTING Table 7-1 Symptoms Causes Solution • Power failure. • Wait for the electrical power supply to re- • Power switch is off. establish. Unit does not start • Fuse may have been activated. • Switch on the power. •...
TROUBLESHOOTING | 9 7.2 Problems and causes for the remote controller Before asking for servicing or repairing, check the following points. (see in Table 7-2) Table 7-2 Symptoms Causes Solution • Check whether the MODE indicated on the When automatic mode is selected, the air display is “AUTO”...
NOTES | 10 6 720 862 442 (2016/04) MDCI Series – All DC Inverter Outdoor Units (Three phase)
NOTES | 11 MDCI Series – All DC Inverter Outdoor Units (Three phase) 6 720 862 442 (2016/04)