Table of Contents iii
3.10 “C1” Indoor Unit: Failure of Transmission
(Between Indoor unit PC Board and Fan PC Board)............................154
3.11 “C4” Indoor Unit: Malfunction of Thermistor (R2T)
for Heat Exchanger ..............................................................................156
3.12 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes .........157
3.13 “C6” Indoor Unit: Failure of Combination
(Between Indoor unit PC Board and Fan PC Board)............................158
3.14 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air.........159
3.15 “CA” Indoor Unit: Malfunction of Thermistor for Discharge Air...............160
3.16 “CC” Indoor Unit: Malfunction of Humidity Sensor System....................161
3.17 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in
Remote Controller................................................................................162
3.18 “E1” Outdoor Unit: PC Board Defect.....................................................163
3.19 “E3” Outdoor Unit: Actuation of High Pressure Switch..........................164
3.20 “E4” Outdoor Unit: Actuation of Low Pressure Sensor..........................166
3.21 “E5” Inverter Compressor Motor Lock...................................................168
3.22 “E7” Malfunction of Outdoor Unit Fan Motor .........................................169
3.23 “E9” Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E, Y3E)...............................................170
3.24 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature..................172
3.25 “F6” Outdoor Unit: Refrigerant Overcharged.........................................173
3.26 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air.....174
3.27 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T)....175
3.28 “J5” Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for
Suction Pipe 1, 2..................................................................................176
3.29 “J6” Outdoor Unit: Malfunction of Thermistor (R6T) .............................177
3.30 “J7” Outdoor Unit: Malfunction of Thermistor (R7T) for
Outdoor Unit Liquid Pipe......................................................................1 78
3.31 “J9” Outdoor Unit: Malfunction of Thermistor (R4T) .............................179
3.32 “JA” Outdoor Unit: Malfunction of High Pressure Sensor......................180
3.33 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor ......................181
3.34 “L1” Outdoor Unit: Malfunction of PC Board.........................................182
3.35 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise.................................................................................183
3.36 “L5” Outdoor Unit: Inverter Compressor Abnormal...............................184
3.37 “L8” Outdoor Unit: Inverter Current Abnormal.......................................185
3.38 “L9” Outdoor Unit: Inverter Start up Error .............................................186
3.39 “LC” Outdoor Unit: Malfunction of Transmission between
Inverter and Control PC Board.............................................................187
3.40 “P1” Outdoor Unit: High Voltage of Capacitor in
Main Inverter Circuit.............................................................................188
3.41 “U0” Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................189
3.42 “U2” Power Supply Insufficient or Instantaneous Failure ......................191
3.43 “U3” Check Operation not Executed......................................................193
3.44 “U4” Malfunction of Transmission between Indoor Units and
Outdoor Units.......................................................................................194
3.45 “U5” Malfunction of Transmission between Remote Controller and
Indoor Unit............................................................................................196
3.46 “U8” Malfunction of Transmission between Main and
Sub Remote Controllers.......................................................................197
3.47 “U9” Malfunction of Transmission between Indoor and
Outdoor Units in the Same System......................................................198