Troubleshooting - Mitsubishi Electric PQHY-P72TYHMU-A Service Handbook

IX Troubleshooting
[1] Error Code Lists ............................................................................................................. 227
[2] Responding to Error Display on the Remote Controller................................................. 230
[3] Investigation of Transmission Wave Shape/Noise......................................................... 303
[4] Troubleshooting Principal Parts ..................................................................................... 306
[5] Refrigerant Leak ............................................................................................................ 343
[6] Compressor Replacement Instructions.......................................................................... 347
[7] Servicing the BC controller ............................................................................................ 353
[8] Troubleshooting Using the Heat source Unit LED Error Display ................................... 356
HWE09080 - 225 - GB