Daikin 4MXS-R Series User Manual

SiUS121736EA
Service Diagnosis 132
7.6 Outdoor Unit PCB Abnormality................................................................. 187
7.7 OL Activation (Compressor Overload) ..................................................... 188
7.8 Compressor Lock ..................................................................................... 190
7.9 DC Fan Lock ............................................................................................ 191
7.10 Input Overcurrent Detection ..................................................................... 192
7.11 Four Way Valve Abnormality.................................................................... 193
7.12 Discharge Pipe Temperature Control....................................................... 195
7.13 High Pressure Control in Cooling ............................................................. 196
7.14 Compressor Sensor System Abnormality ................................................ 197
7.15 Position Sensor Abnormality .................................................................... 199
7.16 CT or Related Abnormality ....................................................................... 201
7.17 Thermistor or Related Abnormality (Outdoor Unit)................................... 203
7.18 Electrical Box Temperature Rise.............................................................. 205
7.19 Radiation Fin Temperature Rise .............................................................. 206
7.20 Output Overcurrent Detection .................................................................. 207
8. Check ......................................................................................................209
8.1 Thermistor Resistance Check .................................................................. 209
8.2 Indoor Fan Motor Connector Check ......................................................... 210
8.3 Hall IC Check ........................................................................................... 211
8.4 Power Supply Waveform Check............................................................... 211
8.5 Electronic Expansion Valve Check........................................................... 212
8.6 Four Way Valve Performance Check ....................................................... 213
8.7 Inverter Unit Refrigerant System Check................................................... 213
8.8 Inverter Analyzer Check ........................................................................... 214
8.9 Rotation Pulse Check on the Outdoor Unit PCB ...................................... 215
8.10 Installation Condition Check..................................................................... 216
8.11 Discharge Pressure Check....................................................................... 216
8.12 Outdoor Fan System Check ..................................................................... 217
8.13 Main Circuit Short Check.......................................................................... 217
8.14 Capacitor Voltage Check.......................................................................... 218
8.15 Power Module Check ............................................................................... 219

Daikin 4MXS-R Series Specifications

General

Brand	Daikin
Model	4MXS-R Series
Category	Air Conditioner
Language	English