Mitsubishi Electric MSZ-GL06NA User manual

Models
MSZ-GL06NA -U1 ,U2 MSY-GL09NA -U1 ,U2
MSZ-GL09NA -U1 ,U2 MSY-GL12NA -U1 ,U2
MSZ-GL12NA -U1 ,U2 MSY-GL15NA -U1 ,U2
MSZ-GL15NA -U1 ,U2 MSY-GL18NA -U1
MSZ-GL18NA -U1 MSY-GL24NA -U1
MSZ-GL24NA -U1
SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ······························2
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································6
4. OUTLINES AND DIMENSIONS ·····················8
5. WIRING DIAGRAM ···································10
6. REFRIGERANT SYSTEM DIAGRAM ···········12
7. SERVICE FUNCTIONS······························13
8. MICROPROCESSOR CONTROL·················15
9. TROUBLESHOOTING·······························23
10. DISASSEMBLY INSTRUCTIONS·················42
No. OBH732
REVISED EDITION-D
Outdoor unit service manual
MUZ-GL•NA, MUY-GL•NA Series (OBH733)
MXZ-C•NA, MXZ-C•NAHZ Series (OCH573)
PARTS CATALOG (OBB732)
INDOOR UNIT
Revision D:
• MSZ-GL06/09/12/15NA- U2 and
MSY-GL09/12/15NA- U2 have been
added.
OBH732 REVISED EDITION-C is void.
MSZ-GL18NA
MSY-GL18NA

2
MSZ-GL18NA- U1 MSY-GL18NA- U1
MSZ-GL24NA- U1 MSY-GL24NA- U1
1. New model
MSZ-GL06NA- U1 MSY-GL09NA- U1
MSZ-GL09NA- U1 MSY-GL12NA- U1
MSZ-GL12NA- U1 MSY-GL15NA- U1
MSZ-GL15NA- U1
1. New model
MSZ-GL06NA- U1 MSZ-GL06NA- U2
MSZ-GL09NA- U1 MSZ-GL09NA- U2
MSZ-GL12NA- U1 MSZ-GL12NA- U2
MSZ-GL15NA- U1 MSZ-GL15NA- U2
MSY-GL09NA- U1 MSY-GL09NA- U2
MSY-GL12NA- U1 MSY-GL12NA- U2
MSY-GL15NA- U1 MSY-GL15NA- U2
1. Remote controller has been changed.
2. Indoor electronic control P.C. board and indoor power P.C. board have been changed.
1 TECHNICAL CHANGES
Revision A:
• MSZ-GL06/09/12/15NA- U1 and MSY-GL09/12/15NA- U1 have been added.
Revision B:
• 3. SPECIFICATION has been corrected.
Revision C:
• For the airflow of MSZ-GL24NA- U1 and MSY-GL24NA- U1 on the specification table has been corrected
(3. SPECIFICATION).
Revision D:
• MSZ-GL06/09/12/15NA- U2 and MSY-GL09/12/15NA- U2 have been added.
Use the specied refrigerant only
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the spec labels provided with our products.
We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to
follow the instructions.
<Preparation before the repair service>
Prepare the proper tools.
Prepare the proper protectors.
Provide adequate ventilation.
After stopping the operation of the air conditioner, turn off the power-supply breaker and pull the power plug.
Discharge the capacitor before the work involving the electric parts.
<Precautions during the repair service>
Do not perform the work involving the electric parts with wet hands.
Do not pour water into the electric parts.
Do not touch the refrigerant.
Do not touch the hot or cold areas in the refrigeration cycle.
When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to
touch the live parts.
WARNING
• When the refrigeration circuit has a leak, do not execute pump down with the compressor.
• When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
The compressor may burst if air etc. get into it.
• When opening or closing the valve below freezing temperatures, refrigerant may spurt out from the gap
between the valve stem and the valve body, resulting in injuries.
OBH732D

3
Remote controller
Operation indicator lamp
Remote control receiving section
Emergency operation switch
Horizontal vane
Air outlet
Air filter
(Nano platinum filter)
Air inlet
Heat exchanger
Front panel
Air cleaning filter
(Anti-Allergy Enzyme
Filter)
2 PART NAMES AND FUNCTIONS
MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA
MSY-GL09NA MSY-GL12NA MSY-GL15NA
ACCESSORIES
Installation plate 1
Attachment screws for the installation plate
4 × 25 mm 5
Remote controller holder 1
Screws for 3.5 × 16 mm (Black) 2
Battery (AAA) for remote controller 2
Wireless remote controller 1
Felt tape (For left or left-rear piping) 1
Air cleaning lter 2
OBH732D

4
MSZ-GL18NA
MSY-GL18NA
ACCESSORIES
Installation plate 1
Installation plate xing screw 4 × 25 mm 5
Remote controller holder 1
Fixing screw for 3.5 × 16 mm (Black) 2
Battery (AAA) for remote controller 2
Wireless remote controller 1
Felt tape (Used for left or left-rear piping) 1
Air cleaning lter 2
Remote controller
Operation indicator lamp
Remote control receiving section
Emergency operation switch
Horizontal vane
Air outlet
Air filter
(Nano platinum filter)
Air inlet
Front panel
Air cleaning filter
(Anti-Allergy Enzyme
Filter)
Heat exchanger
OBH732D

5
Remote controller
Front panel
Air filter
(Nano platinum filter)
Air inlet
Air cleaning filter
(Electrostatic anti-allergy
enzyme filter)
Air outlet
Horizontal vane
Heat exchanger
Operation indicator lamp
Remote control receiving section
Emergency operation switch
MSZ-GL24NA
MSY-GL24NA
ACCESSORIES
Installation plate 1
Installation plate xing screw 4 × 25 mm 7
Remote controller holder 1
Fixing screw for 3.5 × 16 mm (Black) 2
Battery (AAA) for remote controller 2
Wireless remote controller 1
Felt tape (Used for left or left-rear piping) 1
Air cleaning lter 2
OBH732D