Mitsubishi Heavy Industries Air Conditioner User's Manual

Model Series: SRK/SRC ZSX-W / ZSX-WA

Introduction

Thank you for purchasing a Mitsubishi Heavy Industries air conditioner. This manual provides important information for the safe and efficient operation of your unit. Please read it carefully and keep it for future reference.

Safety Precautions

General Precautions

Read all instructions before use.
Follow all warnings and cautions.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction.
Keep children supervised.
Do not install in areas where flammable gases may be present.
Ensure proper grounding.
Do not insert objects into air outlets.
Do not spray water on the unit.
Do not attempt to repair or modify the unit yourself.

Installation Precautions

Installation must be performed by a qualified technician.
Ensure proper ventilation.
Do not install near sources of ignition.
Ensure proper drainage.

Operating Precautions

Do not expose yourself to direct airflow for extended periods.
Do not block air inlets or outlets.
Keep the remote control out of reach of children.
Do not touch electrical parts with wet hands.
Do not hang on the indoor unit.
Do not place flammable materials near the unit.
Do not wash the unit with water.

Maintenance Precautions

Turn off power before cleaning.
Do not touch aluminum fins.
Use a soft, dry cloth for cleaning.
Clean air filters regularly.

Parts Identification

Indoor Unit

Air Inlet Panel
Air Filters
Fan
Evaporator (Aluminum fins)
Louvers (Vertical fins)
Dampers (Horizontal fins)
Air Outlet
Room Temperature Sensor
Motion Sensor
Display Unit
Air Cleaning Filter (Allergen Filter)
Deodorizing Filter

Outdoor Unit

Air Inlet (Rear and Side)
Fan
Evaporator (Aluminum fins)
Air Outlet
Drain Outlet
Refrigerant Piping and Electrical Connections
Model Name Label

Remote Control Operation

Basic Operation

ON/OFF Button: Turns the unit on or off.
MODE Button: Selects operating mode (Auto, Cool, Heat, Dry, Fan).
TEMP Button: Adjusts the set temperature.
FAN SPEED Button: Adjusts fan speed (Auto, ULo, Lo, Me, Hi).
AIR FLOW Buttons (U/D, L/R): Adjusts airflow direction.
SILENT Button: Activates quiet operation.
ALLERGEN CLEAR Button: Initiates allergen removal cycle.
TIMER Buttons (ON TIMER, OFF TIMER, SLEEP TIMER): Set operating timers.
WEEKLY Button: Activates weekly timer programming.
MENU Button: Accesses advanced settings (Display Brightness, Auto Off, Self Clean, Preset).
SET Button: Confirms settings.
CANCEL Button: Cancels timer settings.
ACL Button: Resets the remote control.

Timer Functions

Sleep Timer: Automatically turns off the unit after a set time, with temperature adjustment.
Off Timer: Turns the unit off at a set time.
On Timer: Turns the unit on at a set time.
On/Off Timer Combination: Sets both an on and off time.
Weekly Timer: Allows programming of daily operations for a week.

Special Functions

High Power/ECO Mode: High Power for rapid cooling/heating, ECO for energy saving.
Night Setback: Maintains a comfortable temperature at night (approx. 10°C in heating mode).
Silent Mode: Reduces noise from the outdoor unit.
Auto Off: Automatically turns off the unit if no motion is detected for a set period.
Self Clean: Cleans the indoor unit to prevent mold and bacteria.
Preset: Saves preferred settings for quick recall.
3D Auto: Automatically controls airflow direction and fan speed for optimal room coverage.

Maintenance

Before Cleaning:

Disconnect power ?.
Do not get water on the unit ??.
Do not touch aluminum fins ✋❄️.
Use a stable platform when accessing panels.
Do not use hot water, solvents, or abrasive cleaners.

During Operating Season:

Air Filter Cleaning: Clean every two weeks. Remove the air inlet panel, pull out the filters, vacuum them, and reinsert.
Allergen Filter: Replace annually or when visibly dirty. Can be vacuumed.
Deodorizing Filter: Wash with water if dirty, dry in sunlight ☀️.

Opening/Closing Air Inlet Panel:

The panel opens and closes automatically via an electric motor ⚙️.
Handle with care to avoid mechanical damage.

End of Season / Beginning of Season Checks:

Run fan for 2-3 hours to dry internal parts (end of season).
Check power cord and grounding.
Ensure no obstructions at air inlets/outlets.
Check for corrosion on outdoor unit base.
Remove batteries from remote ?? (end of season).
Insert batteries into remote ?✅ (beginning of season).

Troubleshooting

Unit does not operate: Check power ⚡, timer settings ⏱️, circuit breaker/fuse.

Weak cooling/heating: Check temperature settings ?️, air filters ?️, open windows/doors ?, heat sources ?, room occupancy ?‍?‍?.

Other issues: Refer to the self-diagnosis section for error codes indicated by RUN and TIMER lights.

RUN light blinking: Indicates various sensor errors, fan motor issues, refrigerant problems, or valve issues.
TIMER light blinking: Indicates outdoor unit sensor errors or pipe issues.
RUN and TIMER lights blinking: Indicates power issues ⚡, outdoor unit faults, compressor issues, or communication errors.

Specifications and Compliance

Operating Temperature Ranges:

Cooling: Indoor 18-32°C, Outdoor -15-46°C
Heating: Indoor 10-30°C, Outdoor -20-24°C

Refrigerant: R32 or R410A (check outdoor unit label).

EU Declaration of Conformity: Conforms to Machinery Directive 2006/42/EC and standards EN 378-2, EN 60335-1, EN 60335-2-40.

Manufacturer: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

Authorized Representative in EU: MITSUBISHI HEAVY INDUSTRIES AIR-CONDITIONING EUROPE, LTD.

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