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General| Brand | Haier |
|---|---|
| Model | 1U25YESFRA-3 |
| Category | Air Conditioner |
| Language | English |
Details of the model nameplate and its components.
Important safety warnings and cautions for repair work.
Safety checks and advice for after the repair work is completed.
Outlines essential checks to perform after completing the repair.
Explains the meaning and usage of various icons in the manual.
A list detailing the icons used and their respective meanings.
Specifies voltage, phase, and frequency for the distribution system.
Details cooling/heating capacity and power input values.
Provides unit dimensions, weight, and sound pressure/power levels.
Lists electrical ratings such as running and starting currents.
Specifications for key components like compressor and fan.
Other technical specifications including refrigerant and piping.
Diagram illustrating the refrigerant flow in cooling mode.
Diagram illustrating the refrigerant flow in heating mode.
Graph showing the operational temperature range for cooling.
Graph showing the operational temperature range for heating.
Wiring diagram specific to the outdoor unit.
General overview of the unit's main functions and control specifications.
Details on the operation frequency of the outdoor unit and its control.
Describes the control mechanism for the outdoor fan.
Explains the operation and control of the four-way valve.
Details various protection functions implemented in the unit.
Methods to prevent over-current issues in the compressor.
Details the protection mechanisms related to AC current.
Describes the anti-freezing protection for the indoor heat exchanger.
Explains the limitations on the frequency modification rate.
Details temperature protection for the outdoor refrigerating coil.
Thermistor resistance values for ambient, defrosting, and pipe sensors.
Thermistor resistance values for the discharging sensor.
Provides dimensional views and measurements of the outdoor unit.
Indicates the center of gravity for the outdoor unit.
Warnings and precautions to follow before initiating diagnosis.
Lists parameters for key electronic components like compressor and fan motor.
Lists common problems and their corresponding diagnostic measures.
Details error codes and descriptions for indoor unit malfunctions.
Diagnosing issues related to thermistors and their abnormalities.
Troubleshooting procedures for EEPROM errors.
Guides for diagnosing and resolving indoor DC fan motor malfunctions.
Troubleshooting steps for outdoor DC fan motor faults.
Diagnosing and resolving IPM protection faults.
Steps to diagnose and fix compressor over-current issues.
Diagnosing communication faults between IPM and the outdoor PCB.
Troubleshooting power supply voltage abnormalities.
Diagnosing overheat protection triggered by discharge temperature.
Troubleshooting communication faults between indoor and outdoor units.
Diagnosing compressor position detection circuit faults.
Troubleshooting high work-intense protection issues.
Graphs showing cooling capacity at various temperature conditions.
Graphs illustrating cooling power consumption versus temperature.
Graphs showing cooling discharge pressure at different temperatures.
Graphs illustrating cooling suction pressure versus temperature.
Graphs showing heating capacity at various temperature conditions.
Graphs illustrating heating power consumption versus temperature.
Graphs showing heating discharge pressure at different temperatures.
Graphs illustrating heating suction pressure versus temperature.
Circuit diagrams for the outdoor unit's control board.
General features related to the removal of the outdoor panel.
Step-by-step instructions for removing the outdoor unit panels.
Procedure to loosen and remove panel fixing screws.
Instructions for pulling and removing the front panel.
Procedure to loosen two screws.
Steps to lift and remove the partition plate with a lower side hook.
Instructions to loosen the marked fixing screws.
Procedure to loosen a marked fixing screw.
Instructions to loosen the fixing hook and remove the heat exchanger.
