MRCOOL MXH1518V30BV08 - Manuals

8. Location Selection OUTDOOR UNIT mrcool.com | Page 10 8.1 Indoor unit location selection • The place should easily support the indoor unit's weight. • The place is easily accessible for indoor unit installation and inspection. • The place can accommodate horizontal indoor unit installation. • The ...

10. Refrigerant Pipe Installation OUTDOOR UNIT mrcool.com | Page 13 Maximum pipe length and height drop Consider the allowable pipe length and height drop when deciding the installation position. Make sure the distance and height drop between the indoor and outdoor units do not exceed the data in th...

11. Vacuum Drying and Leakage Checking OUTDOOR UNIT mrcool.com | Page 15 Purpose of vacuum drying • Eliminating moisture in system to prevent the phenomena of ice-blockage and copper oxidation Ice-blockage can cause abnormal operation of system, while copper oxide can damage the compressor. • Elimin...

After the vacuum drying process is carried out, the additional refrigerant charge process needs to be performed. The outdoor unit is factory charged with refrigerant. The additional refrigerant charge volume is decided by the diameter and length of the liquid pipe between the indoor and outdoor unit...

13. Engineering of Insulation OUTDOOR UNIT mrcool.com | Page 17 Insulation of refrigerant pipe Operational procedure of refrigerant pipe insulation 1. Cut the suitable pipe 2. Insulation (except joint section) 3. Flare the pipe 4. Piping layout and connection 5. Vacuum drying 6. Insulate the joint p...

OUTDOOR UNIT mrcool.com | Page 18 Insulation material selection for drainage pipe • The insulation material should be a flame retardant material, and the material should be in accordance to the guidelines of local law. • Thickness of insulation layer is usually above 10mm. • Use specific glue to paste...

15. Test Operation OUTDOOR UNIT mrcool.com | Page 20 The test operation must be carried out after the entire installation has been completed. Check off the following before testing the operation: Are both the indoor unit and outdoor unit installations completed? Is tubing and wiring completed? Have y...

16. Troubleshooting OUTDOOR UNIT mrcool.com | Page 21 System Alarm: Green light or Yellow light slowly flashes System lock: Green light goes out and Yellow light is on Turn off power for 10-15 minutes and then restart.

OUTDOOR UNIT mrcool.com | Page 22 T3 Condenser Temperature sensor fault Error No Check the sensor is good or not? Error Well connected, then replace the sensor or PCB Replace the bad sensor Check the connection between sensor and PCB No Check PCB Sensor is open circuit? Sensor is short circuit? Comp...

OUTDOOR UNIT mrcool.com | Page 23 Low pressure alarm Error OK Check the gas side of the system Lack of refrigerant Low Pressure alarm OK Heat exchanger is in poor condition Check the PCB and pressure swich Replace PCB or switch OK Error Repair the heat exchanger Repair the leakage & charge refri...

OUTDOOR UNIT mrcool.com | Page 24 (T3)High temperature protection Error OK The condenser is in poor condition Check the connection between sensor and PCB High temp. protection of Outdoor Condenser Well connected, then replace the sensor or PCB OK There is N 2 or air in the system Check if the liquid...

PRODIRECT™ Series The design and specifications of this product and/or manual are subject to change without prior notice. Consult with the sales agency or manufacturer for details.