Daikin BA-Series Service Manual

Contents

Daikin BA-Series Service Manual Manual pdf 67 page image

SiBE05-722EDService Diagnosis 56Part 6Service Diagnosis1. General Problem Symptoms and Check Items .....................................572. Troubleshooting with LED .....................................................................582.1 Indoor Unit..............................................................................................582.2 Outdoor Unit ...........................................................................................583. Service Diagnosis .................................................................................594. Troubleshooting ....................................................................................624.1 Error Codes and Description ..................................................................624.2 Indoor Unit PCB Abnormality .................................................................634.3 Freeze-up Protection Control / Heating Peak-cut Control ......................644.4 Fan Motor (AC Motor) or Related Abnormality.......................................654.5 Thermistor or Related Abnormality (Indoor Unit)....................................674.6 Refrigerant Shortage ..............................................................................684.7 Low-voltage Detection or Over-voltage Detection..................................704.8 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)......724.9 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ...............744.10 Outdoor Unit PCB Abnormality...............................................................754.11 OL Activation (Compressor Overload) ...................................................764.12 Compressor Lock ...................................................................................784.13 DC Fan Lock ..........................................................................................794.14 Input Overcurrent Detection ...................................................................804.15 Four Way Valve Abnormality..................................................................814.16 Discharge Pipe Temperature Control.....................................................834.17 High Pressure Control in Cooling ...........................................................844.18 Compressor System Sensor Abnormality ..............................................854.19 Position Sensor Abnormality ..................................................................864.20 DC Voltage / Current Sensor Abnormality..............................................884.21 Thermistor or Related Abnormality (Outdoor Unit).................................894.22 Electrical Box Temperature Rise............................................................914.23 Radiation Fin Temperature Rise ............................................................944.24 Output Overcurrent Detection ................................................................975. Check ....................................................................................................995.1 Thermistor Resistance Check ................................................................995.2 Hall IC Check .......................................................................................1005.3 Power Supply Waveforms Check.........................................................1005.4 Electronic Expansion Valve Check.......................................................1015.5 Four Way Valve Performance Check ...................................................1025.6 Inverter Unit Refrigerant System Check...............................................1025.7 Inverter Analyzer Check .......................................................................1035.8 Rotation Pulse Check on the Outdoor Unit PCB ..................................1045.9 Installation Condition Check.................................................................1055.10 Discharge Pressure Check...................................................................1065.11 Outdoor Fan System Check .................................................................1065.12 Main Circuit Short Check......................................................................1075.13 Power Module Check ...........................................................................109