Mitsubishi Electric PURY-HP72 Service Handbook page 11

CONTENTS
7-3 Error Code Definitions and Solutions: Codes [1000 - 1999]........................................................... 180
7-4 Error Code Definitions and Solutions: Codes [2000 - 2999]........................................................... 184
7-5 Error Code Definitions and Solutions: Codes [3000 - 3999]........................................................... 191
7-6 Error Code Definitions and Solutions: Codes [4000 - 4999]........................................................... 192
7-7 Error Code Definitions and Solutions: Codes [5000 - 5999]........................................................... 210
7-8 Error Code Definitions and Solutions: Codes [6000 - 6999]........................................................... 223
7-9 Error Code Definitions and Solutions: Codes [7000 - 7999]........................................................... 239
Chapter 8 Troubleshooting Based on Observed Symptoms
8-1 MA Remote Controller Problems ...................................................................................................... 251
8-2 ME remote Controller Problems ....................................................................................................... 255
8-3 Refrigerant Control Problems ........................................................................................................... 259
8-4 Checking Transmission Waveform and for Electrical Noise Interference .................................... 264
8-5 Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems ........ 267
8-6 Troubleshooting Solenoid Valve Problems ..................................................................................... 269
8-7 Troubleshooting Outdoor Unit Fan Problems ................................................................................. 272
8-8 Troubleshooting LEV Problems........................................................................................................ 273
8-9 Troubleshooting Problems with Major Components on BC Controller ........................................ 277
8-10 Troubleshooting Inverter Problems (TKMU).................................................................................... 288
8-11 Troubleshooting Inverter Problems (YKMU) ................................................................................... 298
8-12 Control Circuit (TKMU) ...................................................................................................................... 307
8-13 Control Circuit (YKMU) ...................................................................................................................... 309
8-14 Measures for Refrigerant Leakage ................................................................................................... 311
8-15 Compressor Replacement Instructions ........................................................................................... 313
8-16 Solenoid Valve Block and Check Valve Replacement Instructions .............................................. 315
8-17 BC Controller Maintenance Instructions.......................................................................................... 319
8-18 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit ..................... 322
Chapter 9 LED Status Indicators on the Outdoor Unit Circuit Board
9-1 LED Status Indicators ........................................................................................................................ 325
9-2 LED Status Indicators Table ............................................................................................................. 328
HWE13080 GB