Mitsubishi MSZ-FA-VA User Manual

SERVICE TECHNICAL GUIDE
CONTENTS
1. MSZ-FA MICROPROCESSOR CONTROL ··········4
2. MSZ-GA MICROPROCESSOR CONTROL ·······22
3. MFZ MICROPROCESSOR CONTROL ··············50
4. MXZ MICROPROCESSOR CONTROL··············62
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
FLOOR TYPE, HEAT PUMP AIR CONDITIONERS
MSZ-FA•VA - · MUZ-FA•VA -
MSZ-GA•VA - · MUZ-GA•VA -
MFZ-KA•VA -
A
A
A
A
A
No. OBT14
REVISED EDITION-A
Wireless type
Models
· MXZ-A•VA -
A
Inverter-controlled multi system type Models
Revision A:
● MSZ-GA80VA has been added.
● MUZ-GA•VA - has been added.
● MXZ-A•VA - has been added.
A
A
Please void OBT14.
OBT14A--1qxp 06.1.12 1:07 PM Page 1
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Mitsubishi MSZ-FA-VA Specifications

General

Brand	Mitsubishi
Model	MSZ-FA-VA
Category	Air Conditioner
Language	English

Summary

MSZ-FA MICROPROCESSOR CONTROL

1-1. COOL OPERATION

Detailed explanation of the cooling mode operation, including thermostat and fan control.

1-2. DRY OPERATION

Explanation of the dehumidification mode operation and its controls.

1-3. HEAT OPERATION

Detailed explanation of the heating mode operation, including thermostat and fan control.

1-4. AUTO CHANGE OVER AUTO MODE OPERATION

Describes automatic switching between cooling and heating modes based on room temperature.

1-5. INDOOR FAN MOTOR CONTROL

Explains the rotational frequency feedback control for indoor fan speed.

1-6. OUTDOOR FAN MOTOR CONTROL

Details how outdoor fan speed is controlled based on compressor frequency.

1-7. AUTO VANE OPERATION

Explains automatic control of horizontal vane position for optimal air distribution.

1-8. i-see CONTROL OPERATION

Describes the intelligent sensor for automatic room temperature adjustment.

1-9. AREA() SETTING

Explains how to set air direction based on room sensing for specific areas.

1-10. PLASMA DUO (+) OPERATION

Details the operation of the air purifying and deodorizing function.

1-11. AUTO FRONT PANEL

Describes the automatic opening and closing of the front panel during operation.

1-12. TIMER OPERATION

Instructions for setting ON and OFF timers for the unit.

1-13. EMERGENCY / TEST OPERATION

Guide for emergency or test run operation when remote controller fails.

1-14. INVERTER SYSTEM CONTROL

Technical explanation of the inverter power supply and control circuits.

1-15. OPERATIONAL FREQUENCY CONTROL OF OUTDOOR UNIT

Details how target operational frequency is set and regulated.

1-16. EXPANSION VALVE CONTROL (LEV CONTROL)

Explains the control mechanism of the electronic expansion valve.

MSZ-GA MICROPROCESSOR CONTROL

WIRELESS REMOTE CONTROLLER

Overview of the wireless remote controller buttons and functions.

INDOOR UNIT DISPLAY SECTION

Explains the indicators and displays on the indoor unit.

2-1. COOL() OPERATION

Detailed explanation of the cooling mode operation, including thermostat and fan control.

2-2. DRY() OPERATION

Explanation of the dehumidification mode operation and its controls.

2-3. HEAT() OPERATION

Detailed explanation of the heating mode operation, including thermostat and fan control.

2-4. AUTO CHANGE OVER AUTO MODE OPERATION

Describes automatic switching between cooling and heating modes based on room temperature.

2-5. INDOOR FAN MOTOR CONTROL

Explains the rotational frequency feedback control for indoor fan speed.

2-6. OUTDOOR FAN MOTOR CONTROL

Details how outdoor fan speed is controlled based on compressor frequency.

2-7. AUTO VANE OPERATION

Explains automatic control of horizontal vane position for optimal air distribution.

2-8. TIMER OPERATION

Instructions for setting ON and OFF timers for the unit.

2-9. EMERGENCY / TEST OPERATION

Guide for emergency or test run operation when remote controller fails.

2-10. INVERTER SYSTEM CONTROL

Technical explanation of the inverter power supply and control circuits.

2-11. OPERATIONAL FREQUENCY CONTROL OF OUTDOOR UNIT

Details how target operational frequency is set and regulated.

2-12. EXPANSION VALVE CONTROL (LEV CONTROL)

Explains the control mechanism of the electronic expansion valve.

2-13. COOL() OPERATION

Detailed explanation of the cooling mode operation for larger GA models.

2-14. DRY() OPERATION

Explanation of the dehumidification mode operation for larger GA models.

2-15. HEAT() OPERATION

Detailed explanation of the heating mode operation for larger GA models.

2-16. AUTO CHANGE OVER AUTO MODE OPERATION

Describes automatic switching between cooling and heating modes.

2-17. INDOOR FAN MOTOR CONTROL

Explains the rotational frequency feedback control for indoor fan speed.

2-18. OUTDOOR FAN MOTOR CONTROL

Details how outdoor fan speed is controlled based on compressor frequency.

2-19. AUTO VANE OPERATION

Explains automatic control of horizontal vane position for optimal air distribution.

2-20. TIMER OPERATION

Instructions for setting ON and OFF timers for the unit.

2-21. EMERGENCY / TEST OPERATION

Guide for emergency or test run operation when remote controller fails.

2-22. INVERTER SYSTEM CONTROL

Technical explanation of the inverter power supply and control circuits.

2-23. OPERATIONAL FREQUENCY CONTROL OF OUTDOOR UNIT

Details how target operational frequency is set and regulated.

2-24. EXPANSION VALVE CONTROL (LEV CONTROL)

Explains the control mechanism of the electronic expansion valve.

MFZ MICROPROCESSOR CONTROL

WIRELESS REMOTE CONTROLLER

Overview of the wireless remote controller buttons and functions.

3-1. COOL() OPERATION

Detailed explanation of the cooling mode operation, including thermostat and fan control.

3-2. DRY() OPERATION

Explanation of the dehumidification mode operation and its controls.

3-3. HEAT() OPERATION

Detailed explanation of the heating mode operation, including thermostat and fan control.

3-4. AUTO CHANGE OVER AUTO MODE OPERATION

Describes automatic switching between cooling and heating modes.

3-5. INDOOR FAN MOTOR CONTROL

Explains the rotational frequency feedback control for indoor fan speed.

3-6. OUTDOOR FAN MOTOR CONTROL

Details how outdoor fan speed is controlled based on compressor frequency.

3-7. AUTO VANE OPERATION

Explains automatic control of horizontal vane position for optimal air distribution.

3-8. i-save OPERATION

Instructions for setting and using the energy-saving i-save mode.

3-9. TIMER OPERATION

Instructions for setting ON and OFF timers for the unit.

3-10. EMERGENCY / TEST OPERATION

Guide for emergency or test run operation when remote controller fails.

MXZ MICROPROCESSOR CONTROL

4-1. INVERTER SYSTEM CONTROL

Technical explanation of inverter power supply and control for multi systems.

4-2. EXPANSION VALVE CONTROL (LEV CONTROL)

Explains LEV control for multi-systems based on operating conditions.

4-3. OPERATIONAL FREQUENCY RANGE

Specifies operational frequency ranges for cooling, dry, and heat modes.

4-4. HEAT DEFROSTING CONTROL

Details the conditions and operation for defrosting in heat mode.

4-5. DISCHARGE TEMPERATURE PROTECTION CONTROL

Explains protection mechanisms based on discharge temperature.

4-6. REFRIGERANT RECOVERY CONTROL ON HEATING

Describes refrigerant recovery process during heating operation.

4-7. OUTDOOR FAN CONTROL

Details outdoor fan speed switching based on unit operation.