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General| Brand | Mitsubishi Electric |
|---|---|
| Model | PUHY-HP120TNU-A |
| Category | Air Conditioner |
| Language | English |
General safety guidelines for installation and handling of air conditioners.
Guidelines for charging refrigerant in the liquid phase for R410A systems.
Detailed electrical wiring diagram for the YNU model, including component explanations.
Explains the functions and factory settings of dipswitches on outdoor and indoor units.
Control logic for bypass solenoid valves (SV1a, SV2, SV9, SV10).
Conditions and procedures for starting and stopping the defrost operation.
Procedures for recovering refrigerant during heating and cooling operations.
Control method for outdoor unit fan speed based on capacity requirements.
Process for initial startup mode and subsequent normal control.
Essential checks and precautions before performing the test run of the unit.
Procedures for adjusting refrigerant charge using the unit's adjustment mode and diagnostic switches.
Comprehensive list of error codes, preliminary error codes, and their corresponding searched units.
Detailed definitions and solutions for error codes in the 0-999 range.
Detailed definitions and solutions for error codes in the 1000-1999 range.
Detailed definitions and solutions for error codes in the 2000-2999 range.
Detailed definitions and solutions for error codes in the 3000-3999 range.
Detailed definitions and solutions for error codes in the 4000-4999 range.
Detailed definitions and solutions for error codes in the 5000-5999 range.
Detailed definitions and solutions for error codes in the 6000-6999 range.
Detailed definitions and solutions for error codes in the 7000-7999 range.
Common issues related to refrigerant control and their solutions.
Explains the circuit configuration and troubleshooting steps for high-pressure sensors.
Steps to check solenoid valve operations against control board signals and LED indicators.
Methods to check fan motor revolution and diagnose fan board or motor issues.
General overview of LEV operation and common problems with solutions.
Common problems related to the inverter system and their solutions.
Procedures for identifying and repairing refrigerant leaks.
Step-by-step instructions for replacing various parts of the unit.
Guide to troubleshooting issues using the LED status indicators on the outdoor unit circuit board.
Information on understanding maintenance LED displays and troubleshooting related issues.
Troubleshooting steps for USB functions based on maintenance LED displays.
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