Table of Contents
PACD011001C2
4. Failure Diagnosis for Inverter System .................................................533
5. Troubleshooting (Inverter)...................................................................535
6. Troubleshooting (OP: Central Remote Controller) ..............................543
Table of Contents
3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet.....................508
in Remote Controller ............................................................................509
3.13 Outdoor Unit: Actuation of Safety Device.............................................510
3.14 Outdoor Unit: PC Board Defect ............................................................511
3.15 Outdoor Unit: Actuation of High Pressure Switch.................................512
3.16 Outdoor Unit: Actuation of Low Pressure Switch .................................513
Electronic Expansion Valve (Y1E)........................................................514
3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature.........................515
3.24 Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor................521
Electronic Expansion Valve Failure......................................................522
3.26 Negative Phase, Open Phase ..............................................................523
3.27 Malfunction of Transmission Between Indoor Units .............................524
Between Remote Controller and Indoor Unit........................................525
3.29 Malfunction of Transmission Between Outdoor Units ..........................526
Between Master and Slave Remote Controllers ..................................527
Between Indoor and Outdoor Units in the Same System.....................528
3.32 Excessive Number of Indoor Units .......................................................529
3.33 Address Duplication of Central Remote Controller...............................530
3.34 Refrigerant System not Set, Incompatible Wiring/Piping......................531
4.1 Points of Diagnosis...............................................................................533
4.2 How to Use The Monitor Switch on The Inverter PC Board .................534
Fin Temperature Rise...........................................................................535
5.2 Outdoor Unit: Inverter Instantaneous Over-Current .............................536
5.4 Outdoor Unit: Inverter Stall Prevention, Compressor Lock ..................538
Between Inverter and Control PC Board ..............................................539
5.6 Power Supply Insufficient or Instantaneous Failure .............................540
5.7 Outdoor Unit: Inverter Over-Ripple Protection .....................................541
5.8 Outdoor Unit: Malfunction of Inverter Radiating
Fin Temperature Rise Sensor ..............................................................542
Between Central Remote Controller and Indoor Unit ...........................543
6.2 PC Board Defect ..................................................................................544
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Troubleshooting
