Carrier 42LUVH055N Service Manual

CONTENTS1. Precaution .................................................................................................................................................... 11.1 Safety Precaution .................................................................................................................................................... 11.2 Warning ................................................................................................................................................................... 12. Function ........................................................................................................................................................ 33. Dimension .................................................................................................................................................... 53.1 Indoor Unit ................................................................................................................................................................. 53.2 Outdoor Unit .............................................................................................................................................................. 54. Refrigerant cycle diagram .......................................................................................................................... 65. Wiring diagram ............................................................................................................................................. 75.1 Indoor Unit ................................................................................................................................................................. 742LUVH055N 42LUVH065N 42LUVH075N..................................................................................................... 75.2 Outdoor Unit .............................................................................................................................................................. 838LUVH055N 38LUVH065N .................................................................................................................................. 838LUVH075N ............................................................................................................................................................... 86. Installation details........................................................................................................................................ 96.1 Wrench torque sheet for installation .......................................................................................................................... 96.2 Connecting the cables ............................................................................................................................................... 96.3 Pipe length and the elevation .................................................................................................................................. 106.4 Air purging of the piping and indoor unit .................................................................................................................. 116.5 Pumping down (Re-installation) ............................................................................................................................... 126.6 Re-air purging (Re-installation) ................................................................................................................................ 136.7 Balance refrigerant of the 2-way, 3-way valves........................................................................................................ 146.8 Evacuation ............................................................................................................................................................... 156.9 Gas charging ........................................................................................................................................................... 167. Capacity table ............................................................................................................................................. 1742/38LUVH055N ........................................................................................................................................................... 1742/38LUVH065N ........................................................................................................................................................... 1842/38LUVH075N ........................................................................................................................................................... 198. Electronic function .................................................................................................................................... 208.1 Abbreviation .......................................................................................................................................................... 208.2 Display function ..................................................................................................................................................... 208.3 Protection .............................................................................................................................................................. 208.4 Fan-Only Mode ..................................................................................................................................................... 218.5 Cooling Mode ........................................................................................................................................................ 218.6 Drying mode .......................................................................................................................................................... 228.7 Heating mode ........................................................................................................................................................ 238.8 Auto mode function ............................................................................................................................................... 268.9 Forced operation function ..................................................................................................................................... 268.10 Action of 4-way valve .......................................................................................................................................... 268.11 Two speeds outdoor fan function ......................................................................................................................... 26