Daikin RXYSQ4-5-6PA7V1B Service Manual

Contents

SiBE34-802Table of Contents iii3.10 “C1” Indoor Unit: Failure of Transmission(Between Indoor unit PC Board and Fan PC Board)............................1543.11 “C4” Indoor Unit: Malfunction of Thermistor (R2T)for Heat Exchanger ..............................................................................1563.12 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes .........1573.13 “C6” Indoor Unit: Failure of Combination(Between Indoor unit PC Board and Fan PC Board)............................1583.14 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air.........1593.15 “CA” Indoor Unit: Malfunction of Thermistor for Discharge Air...............1603.16 “CC” Indoor Unit: Malfunction of Humidity Sensor System ....................1613.17 “CJ” Indoor Unit: Malfunction of Thermostat Sensor inRemote Controller ................................................................................1623.18 “E1” Outdoor Unit: PC Board Defect .....................................................1633.19 “E3” Outdoor Unit: Actuation of High Pressure Switch..........................1643.20 “E4” Outdoor Unit: Actuation of Low Pressure Sensor..........................1663.21 “E5” Inverter Compressor Motor Lock ...................................................1683.22 “E7” Malfunction of Outdoor Unit Fan Motor .........................................1693.23 “E9” Outdoor Unit: Malfunction of Moving Part ofElectronic Expansion Valve (Y1E, Y3E)...............................................1703.24 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature..................1723.25 “F6” Outdoor Unit: Refrigerant Overcharged.........................................1733.26 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air.....1743.27 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T) ....1753.28 “J5” Outdoor Unit: Malfunction of Thermistor (R3T, R5T) forSuction Pipe 1, 2 ..................................................................................1763.29 “J6” Outdoor Unit: Malfunction of Thermistor (R6T) .............................1773.30 “J7” Outdoor Unit: Malfunction of Thermistor (R7T) forOutdoor Unit Liquid Pipe ......................................................................1783.31 “J9” Outdoor Unit: Malfunction of Thermistor (R4T) .............................1793.32 “JA” Outdoor Unit: Malfunction of High Pressure Sensor......................1803.33 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor ......................1813.34 “L1” Outdoor Unit: Malfunction of PC Board .........................................1823.35 “L4” Outdoor Unit: Malfunction of Inverter Radiating FinTemperature Rise.................................................................................1833.36 “L5” Outdoor Unit: Inverter Compressor Abnormal ...............................1843.37 “L8” Outdoor Unit: Inverter Current Abnormal.......................................1853.38 “L9” Outdoor Unit: Inverter Start up Error .............................................1863.39 “LC” Outdoor Unit: Malfunction of Transmission betweenInverter and Control PC Board .............................................................1873.40 “P1” Outdoor Unit: High Voltage of Capacitor inMain Inverter Circuit .............................................................................1883.41 “U0” Low Pressure Drop Due to Refrigerant Shortage orElectronic Expansion Valve Failure......................................................1893.42 “U2” Power Supply Insufficient or Instantaneous Failure ......................1913.43 “U3” Check Operation not Executed......................................................1933.44 “U4” Malfunction of Transmission between Indoor Units andOutdoor Units .......................................................................................1943.45 “U5” Malfunction of Transmission between Remote Controller andIndoor Unit............................................................................................1963.46 “U8” Malfunction of Transmission between Main andSub Remote Controllers .......................................................................1973.47 “U9” Malfunction of Transmission between Indoor andOutdoor Units in the Same System ......................................................198