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General| Brand | Mitsubishi Electric |
|---|---|
| Model | PQHY-P72TYHMU-A |
| Category | Air Conditioner |
| Language | English |
List of required tools and materials for installation and servicing.
Details on copper pipe materials and radial thickness for R410A systems.
Procedures for achieving the required vacuum degree and special vacuum drying methods.
Comparison of MA and ME remote controllers, including settings and wiring.
Detailed wiring diagrams for PQHY-P72, 96, 120THMU-A heat source units.
Electrical wiring diagrams for various BC controller models.
Schematic diagrams of the refrigerant circuit for heat source units and BC controllers.
Details on DIP switch functions and factory settings for heat source unit control boards.
Pre-test run checks including refrigerant leaks, wiring, insulation resistance, and power supply.
Step-by-step procedure for performing a test run using the MA remote controller.
Procedures for adjusting refrigerant amount based on observed symptoms and system conditions.
Guidance on interpreting and responding to error displays shown on the remote controller.
Comprehensive list of error codes, their definitions, and the units they apply to.
Detailed troubleshooting steps for key components like pressure sensors and solenoid valves.
Procedures for locating and repairing refrigerant leaks in various system configurations and seasons.
Guide to interpreting LED displays on the heat source unit for diagnosing faults.
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