Brand: MITSUBISHI ELECTRIC
Category: Air Conditioner
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for PUHY-P200, P250, P300, P350, P400, P450, P500YKB-A1
Uploaded: Nov. 21, 2025, 7:40 p.m.
Manual Publish Date: 2015-01-01
This service handbook provides detailed information for the maintenance and repair of MITSUBISHI ELECTRIC Air Conditioners, specifically the R410A series. It covers safety precautions, general precautions, installation procedures, piping work, wiring work, relocation, and repair. Key sections include handling of refrigerant piping, characteristics of refrigerants and oils, air tightness tests, vacuum drying, refrigerant charging, and troubleshooting using error codes and observed symptoms. The manual also details LED status indicators on the outdoor unit circuit board, providing diagnostic information. It emphasizes the use of correct tools and procedures for R410A systems to ensure safety and proper functioning.
Troubleshooting and error codes
| Chapter | Section | Title |
|---|---|---|
| 7 | 7-2 | Error Code Definitions and Solutions: Codes [0 - 999] |
| 7 | 7-3 | Error Code Definitions and Solutions: Codes [1000 - 1999] |
| 7 | 7-4 | Error Code Definitions and Solutions: Codes [2000 - 2999] |
| 7 | 7-5 | Error Code Definitions and Solutions: Codes [3000 - 3999] |
| 7 | 7-6 | Error Code Definitions and Solutions: Codes [4000 - 4999] |
| 7 | 7-7 | Error Code Definitions and Solutions: Codes [5000 - 5999] |
| 7 | 7-8 | Error Code Definitions and Solutions: Codes [6000 - 6999] |
| 7 | 7-9 | Error Code Definitions and Solutions: Codes [7000 - 7999] |
| 8 | 8-1 | MA Remote Controller Problems |
| 8 | 8-2 | ME remote Controller Problems |
| 8 | 8-3 | Refrigerant Control Problems |
| 8 | 8-5 | Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems |
| 8 | 8-6 | Troubleshooting Solenoid Valve Problems |
| 8 | 8-7 | Troubleshooting Outdoor Unit Fan Problems |
| 8 | 8-8 | Troubleshooting LEV Problems |
| 8 | 8-9 | Troubleshooting Inverter Problems |