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General| Brand | Hitachi |
|---|---|
| Model | RAC-18WPE |
| Category | Air Conditioner |
| Language | English |
Details of model numbers and power source requirements for outdoor units.
Specifies cooling and heating capacities in kW and BTU/h.
Provides physical dimensions and net weight of outdoor units.
Defines the scope and identifies object parts for handling standards.
Outlines essential precautions for handling semiconductor parts safely.
Lists detailed electrical specifications for various outdoor unit components.
Shows detailed dimensions and installation clearances for specific outdoor unit models.
Shows detailed dimensions and installation clearances for specific outdoor unit models.
Details components like thermostat and fan motor specifications.
Lists main electric components used in the outdoor unit.
Electrical schematic for the RAC-18/25/35WPE outdoor unit.
Electrical schematic for the RAC-42/50WPE outdoor unit.
Provides a functional overview of the outdoor unit's control system.
Illustrates cooling and heating cycles for specific models.
Illustrates cooling and heating cycles for specific models.
Step-by-step guide for disassembling electrical parts of specific models.
Step-by-step guide for disassembling electrical parts of specific models.
Explains the function of the main power circuit for specific models.
Details the low voltage power supply circuits and their functions.
Lists voltage specifications and checking points for the power circuit.
Procedure for diagnosing fan motor issues and troubleshooting steps.
Details the low voltage power supply circuits and their functions for RAC-42/50WPE.
Lists voltage specifications and checking points for the power circuit.
Addresses common questions and answers related to cooling operation issues.
Provides answers to frequently asked questions about dehumidification mode.
Addresses common questions and answers regarding heating operation.
Explains the auto-fresh defrost function and related user queries.
Answers questions about automatic operation mode selection and behavior.
Covers general operational queries like noise, wind speed, and startup behavior.
Addresses problems with setting and using timers on the remote control.
Explains behavior related to the current time display on the remote.
Discusses problems encountered when making timer reservations.
Covers issues with setting the sleep timer alongside other timers.
Addresses sleep timer functionality and limitations in specific modes.
Explains the temperature display behavior on the remote control.
Clarifies the behavior of the vertical vane button on the remote.
Guides on safely detaching and reattaching tab terminal receptacles.
Instructions for detaching and reattaching board connectors with locking mechanisms.
Critical warning against handling connectors while the unit is energized.
Explains how failure modes are displayed on the outdoor unit via blinking lamps.
Describes the self-diagnosis memory and how to access stored failure modes.
Lists self-diagnosis blinking codes, their meanings, and repair actions.
Lists self-diagnosis blinking codes, their meanings, and repair actions.
Steps for diagnosing EEPROM reading errors indicated by LD301 blinking 13 times.
Steps for diagnosing communication errors indicated by LD301 blinking 9 times.
Addresses other LD301 blinking patterns and their troubleshooting.
Steps for diagnosing EEPROM reading errors indicated by LD301 blinking 13 times.
Steps for diagnosing communication errors indicated by LD301 blinking 9 times.
Addresses other LD301 blinking patterns and their troubleshooting.
Steps for diagnosing power supply voltage errors indicated by LD301 blinking 10 times.
Steps for diagnosing thermistor abnormalities indicated by LD301 blinking 7 times.
Steps for diagnosing OH thermistor issues indicated by LD301 blinking 6 times.
Steps for diagnosing high load stops indicated by LD301 blinking 16 times.
Diagnosing overload lower limit cuts indicated by LD301 blinking 5 times.
Diagnosing switchover failures indicated by LD301 blinking 4 times.
Diagnosing slow rotation indicated by LD301 blinking 3 times.
Diagnosing peak current cuts indicated by LD301 blinking twice.
Diagnosing active voltage abnormalities indicated by LD301 blinking 14 times.
Diagnosing fan lock stops indicated by LD301 blinking 12 times.
Diagnosing fan stops due to strong wind indicated by LD301 blinking 11 times.
Procedure for diagnosing issues when the unit is not operating, heating, or cooling.
Instructions on how to operate the outdoor unit using the test switch.
Steps for setting up independent operation for specific models.
Steps for setting up independent operation for specific models.
Exploded view diagram showing parts for RAC-18/25/35WPE outdoor units.
Lists parts for indoor units with corresponding part numbers.
Exploded view diagram showing parts for RAC-42/50WPE outdoor units.
Lists parts for RAC-42/50WPE outdoor units with part numbers.
