Daikin RXYSQ4-5-6PA7V1B Service Manual

Contents

SiBE34-802Drawings & Flow Charts iiiDrawings & Flow ChartsAabnormal discharge pipe temperature .................172abnormal power supply voltage ...........................149actuation of high pressure switch .........................164actuation of low pressure sensor .........................166address duplication of centralremote controller ...........................................201address duplication, improper setting ..................211Ccentralized control group no. setting ....................100BRC1C type ...................................................100BRC4 type .....................................................101BRC7 type .....................................................101group no. setting example .............................101check for causes of drop in low pressure .............219check for causes of rise in high pressure .............218check for fan motor connector ..............................220check operation ......................................................82check operation not executed ..............................193check work prior to turn power supply on ...............74compressor motor lock .........................................168contents of control modes ....................................102how to select operation mode ........................103cooling operation fan control ..................................52Ddisplay “under host computer integrate control” blinks(repeats double blink) ...................................217display “under host computer integrate control” blinks(repeats single blink) .....................................214display of sensor and address data .....................134drain level above limit ...........................................152drain pump control .................................................65when the float switch is tripped and “AF” isdisplayed on the remote controller ......66when the float switch is tripped during heatingoperation .............................................66when the float switch is tripped while the coolingthermostat is off ..................................65when the float switch is tripped while the coolingthermostat is on ..................................65Eerror of external protection device ........................142excessive number of indoor units .........................200Ffailure of combination (between indoor unit pc boardand fan pc board) ..........................................158failure of transmission (between indoor unit pc boardand fan pc board) ..........................................154fan motor (M1F) lock, overload ............................146freeze prevention ...................................................70functional parts layout ............................................44Hhigh pressure protection control ............................ 60high voltage of capacitor in main invertercircuit ............................................................ 188Iimproper combination of optional controllers forcentralized control ........................................ 209inverter compressor abnormal ............................. 184inverter current abnormal .................................... 185inverter protection control ...................................... 63inverter start up error ........................................... 186Llouver control for preventing ceiling dirt ................. 67low pressure drop due to refrigerant shortage orelectronic expansion valve failure ................ 189low pressure protection control ............................. 61Mmalfunction of capacity determination device ...... 153malfunction of discharge pipe thermistor(R2T) ............................................................ 175malfunction of drain level control system(S1L) ............................................................ 144malfunction of high pressure sensor ................... 180malfunction of humidity sensor system ............... 161malfunction of inverter radiating fintemperature rise ........................................... 183malfunction of low pressure sensor ..................... 181malfunction of moving part of electronic expansionvalve (20E) ................................................... 150malfunction of moving part of electronic expansionvalve (Y1E, Y3E) .......................................... 170malfunction of outdoor unit fan motor .................. 169malfunction of swing flap motor (MA) .................. 147malfunction of system, refrigerant system addressundefined ..................................................... 205malfunction of thermistor (R4T) ........................... 179malfunction of thermistor (R6T)............................ 177malfunction of thermistor (R1T) for outdoor air ... 174malfunction of thermistor (R1T) for suction air .... 159malfunction of thermistor (R2T)for heat exchanger ....................................... 156malfunction of thermistor (R3T) for gas pipes ..... 157malfunction of thermistor (R3T, R5T) forsuction pipe 1, 2 ........................................... 176malfunction of thermistor (R7T) for outdoor unit liquidpipe .............................................................. 178malfunction of thermistor for discharge air .......... 160malfunction of thermostat sensor inremote controller .......................................... 162malfunction of transmission between central remotecontroller and indoor unit .............................. 202

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