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General| Brand | Daikin |
|---|---|
| Model | MA 56D7W1 |
| Category | Air Conditioner |
| Language | English |
Differentiates 56 and 90 series for microcomputer input.
Varies electronic expansion valve opening based on unit/piping.
Details initial state, operation signals, and room changes.
Explains the 120-second delay before compressor restart.
Details operations omitted when a specific pin is short-circuited.
Defines conditions for "requirement, presence" on terminal board.
Describes action upon OC/OL operation and restoring.
Solenoid valve control by thermistor for MA90.
Forced ON via short-circuit at connector S8 for MA90.
Stops fan/compressor when RDR operates.
Describes common regulator P board.
Flowchart for diagnosing unit non-operation.
Flowchart for thermostat rejection issues causing no cooling.
Flowchart for troubleshooting capacity control problems.
Wiring diagram for MA56D7V1 model.
Wiring diagram for MA56D7W1 model.
Wiring diagram for MA90CK7V1 model.
Wiring diagram for MA90CK7W1 model.
Configuration of CT PC board and control PC board.
Chart detailing outdoor unit inputs and outputs.
How operation data is held after power loss.
Cooling and heating temperature control ranges.
Control to prevent freezing during cooling/dry operations.
Controls to manage overheating during heating.
Describes the 3-step airflow pattern for heating.
Flap swing and auto shut-off features.
Fan speed control based on temperature difference.
Prevents cold drafts during heating startup.
Energy-saving mode for nighttime operation.
Conditions for heater operation during heating.
How to temporarily operate in emergencies.
Jumper settings for customizing functions.
Detailed layout and component identification of the PC board.
How to activate forced cooling mode.
How operation mode is determined from indoor units.
How capacity is adjusted in cooling and heating modes.
Conditions and timing for defrosting operation.
Controls to limit power consumption during peak times.
Peak cut controls specific to cooling/dry operations.
Peak cut controls during heating startup.
Prevents rapid compressor restarts after stopping.
Controls for cooling operation across different temperatures.
Manages total current during heating operation.
Specifications for the cool/heat selector.
Steps to enter failure diagnosis mode.
How to interpret the display for diagnosis mode.
Navigating codes using temperature setting buttons.
Switching between digits for code selection.
Finalizing code search with buzzer feedback.
Procedure for conducting a 30-minute test operation.
How to exit test operation mode.
Procedure for resetting the indoor unit fault log.
Specific steps for initiating test operation.
Overview of LED indicators, remote codes, and basic checks.
Fault diagnosis using LEDs on the outdoor unit's PCB.
Detailed troubleshooting steps for various system faults.
Pin assignments for sensors and thermistor resistance values.
How unit models affect connected indoor units.
Control logic for motor-operated valves.
Initial reset and valve state upon power-on.
Valve opening sequence upon receiving ON signal.
Valve opening sequence when room count changes.
Valve behavior when compressor stops.
Tables showing valve opening settings for different room counts.
Function of the phase failure protection device.
Wiring diagrams for various indoor unit models.
Wiring diagrams for various outdoor unit models.
Piping diagrams for indoor units.
Piping diagrams for outdoor units.
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