Mitsubishi Electric MXZ-2C20NA2 User manual

PARTS CATALOG (OBB702)
SERVICE MANUAL
OUTDOOR UNIT
Models
MXZ-2C20NA2 -U1 , U4 MXZ-2C20NAHZ
MXZ-2C20NA3 -U1 MXZ-2C20NAHZ2 -U1
MXZ-2C20NA4 -U1 MXZ-2C20NAHZ3 -U1
MXZ-3C24NA MXZ-2C20NAHZ4 -U1
MXZ-3C24NA2 -U1 MXZ-3C24NAHZ
MXZ-3C24NA3 -U1 MXZ-3C24NAHZ2 -U1
MXZ-3C24NA4 -U1 MXZ-3C24NAHZ3 -U1
MXZ-3C30NA MXZ-3C24NAHZ4 -U1
MXZ-3C30NA2 -U1 MXZ-3C30NAHZ
MXZ-3C30NA3 -U1 MXZ-3C30NAHZ2 -U1
MXZ-3C30NA4 -U1 MXZ-3C30NAHZ3 -U1
MXZ-4C36NA MXZ-3C30NAHZ4 -U1
MXZ-4C36NA2 -U1
MXZ-4C36NA3 -U1
MXZ-4C36NA4 -U1
MXZ-5C42NA
MXZ-5C42NA2 -U1
MXZ-5C42NA3 -U1
MXZ-5C42NA4 -U1
No. OBH702
REVISED EDITION-N
Indoor unit service manual
MSZ-FE·NA Series (OBH542)
MSZ-FH·NA Series (OBH683)
MSZ-GE·NA Series (OBH548)
MSZ-GL·NA Series (OBH732)
MSZ-EF·NA Series (OBH736)
MSZ-FS·NA Series (OBH872)
MFZ-KA·NA Series (OBH568)
MFZ-KJ·NA Series (OBH752)
SLZ-KA·NA Series (OCH487)
SLZ-KF·NA.TH Series (OCH669)
PLA-A·BA Series (OCH420)
PLA-A·EA Series (OCH640)
SEZ-KD·NA Series
PEAD-A·AA Series
PCA-A·KA Series (OCH455)
MVZ-A·AA Series
SVZ-KP·NA Series (MD-1404-K019)
CONTENTS
• INDOOR / OUTDOOR UNIT
COMPATIBILITY TABLE ······················4
1. TECHNICAL CHANGES ······························8
2. SAFETY PRECAUTION·······························9
3. PART NAMES AND FUNCTIONS················13
4. SPECIFICATION ······································14
5. NOISE CRITERIA CURVES························30
6. OUTLINES AND DIMENSIONS···················33
7. WIRING DIAGRAM···································39
8. REFRIGERANT SYSTEM DIAGRAM ···········62
9. DATA······················································75
10. ACTUATOR CONTROL ··························· 106
11. SERVICE FUNCTIONS ···························· 107
12. TROUBLESHOOTING······························110
13. DISASSEMBLY INSTRUCTIONS··············· 141
HFC
utilized
R410A
Revision N:
• 4. SPECIFICATION and 8. REFRIGERANT
SYSTEM DIAGRAM have been corrected.
OBH702 REVISED EDITION-M is void.
MXZ-3C24NA MXZ-3C30NA MXZ-4C36NA
MXZ-3C24NA2 MXZ-3C30NA2 MXZ-4C36NA2
MXZ-3C24NA3 MXZ-3C30NA3 MXZ-4C36NA3
MXZ-3C24NA4 MXZ-3C30NA4 MXZ-4C36NA4

2
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.
OBH702N

3
Revision A:
• MXZ-3C24NA, MXZ-3C30NA and MXZ-4C36NA have been added.
Revision B:
• MXZ-3C24/3C30/4C36/5C42NA2 and MXZ-2C20/3C24/3C30NAHZ2- U1 have been added.
Revision C:
• 4. SPECIFICATION has been changed.
• Some descriptions have been modied.
Revision D:
• Connectable indoor unit lineups have been modied.
• WIRING DIAGRAM (7.) and TEST POINT DIAGRAM AND VOLTAGE (12-7.) have been changed.
Revision E:
• Capacity and input curve have been corrected.
Revision F:
• MXZ-2C20NA2- U1 has been added.
Revision G:
• 5. NOISE CRITERIA CURVES has been changed.
Revision H:
• MSZ-FS·NA series have been added to INDOOR / OUTDOOR UNIT COMPATIBILITY TABLE.
• 2. SAFETY PRECAUTION has been added.
• 9-2. CAPACITY AND THE INPUT CURVES has been modied.
• 12. TROUBLESHOOTING has been modied.
Revision K:
• MXZ-2C20/3C24/3C30/4C36/5C42NA3- U1 and MXZ-2C20/3C24/3C30NAHZ3- U1 have been added.
Revision J:
• MXZ-2C20NA2- U4 has been added.
Revision L:
• Models of refrigeration oil for MXZ-3C24/3C30/4C36/5C42NA3- U1 and MXZ-2C20/3C24/3C30NAHZ3- U1 at
4. SPECIFICATION have been added.
Revision M:
• MXZ-2C20/3C24/3C30/4C36/5C42NA4- U1 and MXZ-2C20/3C24/3C30NAHZ4- U1 have been added.
Revision N:
• 4. SPECIFICATION and 8. REFRIGERANT SYSTEM DIAGRAM have been corrected.
Specications of MXZ-2C20NA4/MXZ-3C24NA4/MXZ-3C30NA4 - U1 have been corrected.
Refrigerant system diagrams of MXZ-3C24/3C30/4C36NA and MXZ-3C24/3C30/4C36NA2/NA3- U1 have been corrected.
OBH702N

4
INDOOR / OUTDOOR UNIT COMPATIBILITY TABLE
<MXZ-2C20NAHZ2-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA ●●●●●●●●
MSZ-GE**NA ●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●
Floor standing MFZ-KA**NA ●●●●
MFZ-KJ**NA-U1 ●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●
SLZ-KF**NA.TH ●●●●
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●
PEAD-A**AA5 ●●●●
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4 ●●
SVZ-KP**NA ●●
<MXZ-2C20NAHZ3-U1, MXZ-2C20NAHZ4-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA ●●●●●●●●
MSZ-GE**NA ●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●
MSZ-GS**NA-U1 ●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●
Floor standing MFZ-KA**NA ●●●●
MFZ-KJ**NA-U1 ●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●
SLZ-KF**NA.TH ●●●●
PLA-A**BA6
PLA-A**EA7
1-way cassette MLZ-KP**NA-U1 ●●●●
MLZ-KP**NA2-U1 ●●●●
MLZ-KY**NA-U1 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●
PEAD-A**AA7 ●●●●
Ceiling suspended PCA-A**KA7.TH
Multi-position MVZ-A**AA4 ●●
SVZ-KP**NA ●●
<MXZ-3C24NA>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA
MSZ-GE**NA ●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH
PLA-A**BA6 ●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4 ●●●●
SVZ-KP**NA
<MXZ-2C20NA2-U1/U4>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA ●●●●●●●●
MSZ-GE**NA ●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●
Floor standing MFZ-KA**NA ●●●●
MFZ-KJ**NA-U1 ●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●
SLZ-KF**NA.TH ●●●●
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●
PEAD-A**AA5 ●●●●
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4 ●●
SVZ-KP**NA ●●
<MXZ-2C20NA3-U1, MXZ-2C20NA4-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA ●●●●●●●●
MSZ-GE**NA ●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●
MSZ-GS**NA-U1 ●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●
Floor standing MFZ-KA**NA ●●●●
MFZ-KJ**NA-U1 ●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●
SLZ-KF**NA.TH ●●●●
PLA-A**BA6
PLA-A**EA7
1-way cassette MLZ-KP**NA-U1 ●●●●
MLZ-KP**NA2-U1 ●●●●
MLZ-KY**NA-U1 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●
PEAD-A**AA7 ●●●●
Ceiling suspended PCA-A**KA7.TH
Multi-position MVZ-A**AA4 ●●
SVZ-KP**NA ●●
<MXZ-2C20NAHZ>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●
MSZ-FH**NA2
MSZ-FS**NA
MSZ-GE**NA ●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA ●●●●
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH ●●●●
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4 ●●
SVZ-KP**NA
OBH702N

5
<MXZ-3C24NA2-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●●●●●●●
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4 ●●●●
SVZ-KP**NA ●●●●
<MXZ-3C24NA3-U1, MXZ-3C24NA4-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2 ●●
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●
MSZ-GS**NA-U1 ●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●
PLA-A**EA7 ●●
1-way cassette MLZ-KP**NA-U1 ●●●●●●
MLZ-KP**NA2-U1 ●●●●●●
MLZ-KY**NA-U1 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA7 ●●●●●●●●
Ceiling suspended PCA-A**KA7.TH
Multi-position MVZ-A**AA4 ●●●●
SVZ-KP**NA ●●●●
PAA-A** ●●
<MXZ-3C24NAHZ>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA
MSZ-GE**NA ●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH
PLA-A**BA6 ●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4 ●●●●
SVZ-KP**NA
<MXZ-3C24NAHZ2-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●●●●●●●
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4 ●●●●
SVZ-KP**NA ●●●●
<MXZ-3C24NAHZ3-U1, MXZ-3C24NAHZ4-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2 ●●
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●
MSZ-GS**NA-U1 ●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●
PLA-A**EA7 ●●
1-way cassette MLZ-KP**NA-U1 ●●●●●●
MLZ-KP**NA2-U1 ●●●●●●
MLZ-KY**NA-U1 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA7 ●●●●●●●●
Ceiling suspended PCA-A**KA7.TH
Multi-position MVZ-A**AA4 ●●●●
SVZ-KP**NA ●●●●
PAA-A** ●●
<MXZ-3C30NA>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●
Ceiling suspended PCA-A**KA6.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA
OBH702N

6
<MXZ-3C30NAHZ2-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●●●●●●●●●
Ceiling suspended PCA-A**KA6.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA ●●●●●●
<MXZ-3C30NAHZ3-U1, MXZ-3C30NAHZ4-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2 ●●
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-GS**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
1-way cassette MLZ-KP**NA-U1 ●●●●●●
MLZ-KP**NA2-U1 ●●●●●●
MLZ-KY**NA-U1 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA7 ●●●●●●●●●●
Ceiling suspended PCA-A**KA7.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA ●●●●●●
PAA-A** ●●●●
<MXZ-4C36NA>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●
Ceiling suspended PCA-A**KA6.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA
<MXZ-3C30NA2-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●●●●●●●●●
Ceiling suspended PCA-A**KA6.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA ●●●●●●
<MXZ-3C30NA3-U1, MXZ-3C30NA4-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2 ●●
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-GS**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
1-way cassette MLZ-KP**NA-U1 ●●●●●●
MLZ-KP**NA2-U1 ●●●●●●
MLZ-KY**NA-U1 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA7 ●●●●●●●●●●
Ceiling suspended PCA-A**KA7.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA ●●●●●●
PAA-A** ●●●●
<MXZ-3C30NAHZ>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●
Ceiling suspended PCA-A**KA6.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA
OBH702N

7
<MXZ-5C42NA2-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2 ●●
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●●●●●●●●●
Ceiling suspended PCA-A**KA6.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA ●●●●●●
<MXZ-5C42NA3-U1, MXZ-5C42NA4-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2 ●●
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-GS**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
1-way cassette MLZ-KP**NA-U1 ●●●●●●
MLZ-KP**NA2-U1 ●●●●●●
MLZ-KY**NA-U1 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA7 ●●●●●●●●●●
Ceiling suspended PCA-A**KA7.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA ●●●●●●
PAA-A** ●●●●
<MXZ-4C36NA2-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●●●●●●●●●
Ceiling suspended PCA-A**KA6.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA ●●●●●●
<MXZ-4C36NA3-U1, MXZ-4C36NA4-U1>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●●●
MSZ-FH**NA2 ●●
MSZ-FS**NA ●●●●●●●●●●
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●●●
MSZ-GS**NA-U1 ●●●●●●●●●●●●
MSZ-EF**NA-U1 ●●●●●●●●
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1 ●●●●●●●●
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH ●●●●●●
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
1-way cassette MLZ-KP**NA-U1 ●●●●●●
MLZ-KP**NA2-U1 ●●●●●●
MLZ-KY**NA-U1 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA7 ●●●●●●●●●●
Ceiling suspended PCA-A**KA7.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA ●●●●●●
PAA-A** ●●●●
<MXZ-5C42NA>
Connectable indoor unit lineups (Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA ●●●●
MSZ-FH**NA ●●●●●●●●
MSZ-FH**NA2
MSZ-FS**NA
MSZ-GE**NA ●●●●●●●●●●●●
MSZ-GL**NA-U1 ●●●●●●●●●●
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA ●●●●●●
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH ●●●●●●
SLZ-KF**NA.TH
PLA-A**BA6 ●●●●
PLA-A**EA7 ●●
Ceiling concealed SEZ-KD**NA4.TH ●●●●●●●●
PEAD-A**AA5 ●●
Ceiling suspended PCA-A**KA6.TH ●●
Multi-position MVZ-A**AA4 ●●●●●●
SVZ-KP**NA
OBH702N

8
1 TECHNICAL CHANGES
MXZ-5C42NA
MXZ-2C20NAHZ
MXZ-3C24NAHZ
MXZ-3C30NAHZ
1. New model
MXZ-3C24NA
MXZ-3C30NA
MXZ-4C36NA
1. New model
MXZ-3C24NA MXZ-3C24NA2- U1
MXZ-3C30NA MXZ-3C30NA2- U1
MXZ-4C36NA MXZ-4C36NA2- U1
MXZ-5C42NA MXZ-5C42NA2- U1
MXZ-2C20NAHZ MXZ-2C20NAHZ2- U1
MXZ-3C24NAHZ MXZ-3C24NAHZ2- U1
MXZ-3C30NAHZ MXZ-3C30NAHZ2- U1
1. Outdoor control P.C. board has been changed.
MXZ-2C20NA2- U1
1. New model
MXZ-2C20NA2- U1 MXZ-2C20NA2- U4
1. Outdoor fan motor has been changed.
2. Outdoor control P.C. board has been changed.
MXZ-2C20NA2- U4 MXZ-2C20NA3- U1
MXZ-3C24NA2- U1 MXZ-3C24NA3- U1
MXZ-3C30NA2- U1 MXZ-3C30NA3- U1
MXZ-4C36NA2- U1 MXZ-4C36NA3- U1
MXZ-5C42NA2- U1 MXZ-5C42NA3- U1
MXZ-2C20NAHZ2- U1 MXZ-2C20NAHZ3- U1
MXZ-3C24NAHZ2- U1 MXZ-3C24NAHZ3- U1
MXZ-3C30NAHZ2- U1 MXZ-3C30NAHZ3- U1
1. Outdoor fan motor has been changed.
2. Outdoor control P.C. board has been changed.
MXZ-2C20NA3- U1 MXZ-2C20NA4- U1
MXZ-3C24NA3- U1 MXZ-3C24NA4- U1
MXZ-3C30NA3- U1 MXZ-3C30NA4- U1
MXZ-4C36NA3- U1 MXZ-4C36NA4- U1
MXZ-5C42NA3- U1 MXZ-5C42NA4- U1
MXZ-2C20NAHZ3- U1 MXZ-2C20NAHZ4- U1
MXZ-3C24NAHZ3- U1 MXZ-3C24NAHZ4- U1
MXZ-3C30NAHZ3- U1 MXZ-3C30NAHZ4- U1
1. Outdoor control P.C. board has been changed.
2. Compressor protector has been added.
OBH702N

9
SAFETY PRECAUTION2
Use the following tools specically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Tools for R410A
Gauge manifold Flare tool
Charge hose Size adjustment gauge
Gas leak detector Vacuum pump adaptor
Torque wrench Electronic refrigerant
charging scale
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of
compressor.
Use the specied refrigerant only.
Never use any refrigerant other than that specied.
Doing so may cause a burst, an explosion, or re when
the unit is being used, serviced, or disposed of.
Correct refrigerant is specied 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.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refriger-
ant will change and the e󰀩ciency will be lowered.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a ame, poisonous gases will be released.
Cautions for units utilizing refrigerant R410A
2-2. CAUTIONS RELATED TO R410A REFRIGERANT
Make sure that the inside and outside of refriger-
ant piping is clean and it has no contaminants
such as sulfur, oxides, dirt, shaving particles, etc.,
which are hazard to refrigerant cycle.
In addition, use pipes with specied thickness.
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil, etc.
Store the piping indoors, and keep both ends of
the piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
If dirt, dust or moisture enters into refrigerant cycle, that can cause
deterioration of refrigerant oil or malfunction of compressor.
The refrigerant oil applied to are and ange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
If large amount of mineral oil enters, that can cause deteri-
oration of refrigerant oil, etc.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the e󰀩ciency will be
lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22, etc.) is used, chlorine in refrigerant
can cause deterioration of refrigerant oil, etc.
Use a vacuum pump with a reverse ow check
valve.
Vacuum pump oil may ow back into refrigerant cycle and
that can cause deterioration of refrigerant oil, etc.
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuit must be disconnected.
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 o󰀨
the power-supply breaker.
• Discharge the condenser 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 electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating
cycle.
• When the repair or the inspection of the circuit needs
to be done without turning o󰀨 the power, exercise great
caution not to touch the live parts.
• 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.
OBH702N

10
Unit
Electronic weighing scale
[3] Service tools
(1) Use the below service tools as exclusive tools for R410A refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
(1) Check that cylinder for R410A on the market is a siphon type.
(2) Charging should be performed with the cylinder of siphon stood vertically. (Refrigerant is charged from liquid phase.)
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specied amount of refrigerant.
(4) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them.
No. Tool name Specications
1 Gauge manifold ·Only for R410A
·Use the existing tting specications. (UNF1/2)
·Use high-tension side pressure of 768.7 PSIG [5.3 MPaG] or over.
2 Charge hose ·Only for R410A
·Use pressure performance of 738.2 PSIG [5.09MPaG] or over.
3 Electronic weighing scale —
4 Gas leak detector ·Use the detector for R134a, R407C or R410A.
5Adaptor for reverse ow check ·Attach on vacuum pump.
6 Refrigerant charge base —
7 Refrigerant cylinder ·Only for R410A
·Top of cylinder (Pink)
·Cylinder with siphon
8 Refrigerant recovery equipment —
OBH702N