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Daikin RTSQ20PY1 Service Manual page 206

Vrv iii-c r-410a heat pump 50hz
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Table of Contents

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195
4.25 "J2" Outdoor Unit: Current Sensor Malfunction ....................................262
(R31T, R32T, R33T).............................................................................263
Heat Exchanger Gas (R2T)..................................................................264
Suction Pipe .........................................................................................265
(R6T or R9T) ........................................................................................267
4.35 "L1" Outdoor Unit: Defective Inverter PCB............................................274
Inverter Radiation Fin Temperature Rise .............................................276
Inverter and Control PCB .....................................................................285
Inverter Radiation Fin Temperature Rise Sensor.................................290
Faulty Combination of PCB ..................................................................291
4.44 "U0" Outdoor Unit: Refrigerant Shortage Alert ......................................293
Instantaneous Failure...........................................................................296
Remote Controller and Indoor Unit.......................................................302
Main and Sub Remote Controllers .......................................................310
Indoor and Outdoor Units in the Same System....................................311
Indoor Units and Remote Controller.....................................................312
Centralized Controller and Indoor Unit .................................................317
4.56 "UF" System is not Set yet.....................................................................320
Refrigerant System Address Undefined ...............................................321
5.1 "M1" PCB Defect ...................................................................................323
SiBE31-801_C
Troubleshooting
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