Mitsubishi PVA-A30AA7 / PUZ-HA30NHA5 / MHK2 Indoor Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

2015

Air-Conditioners

SERVICE MANUAL

Series PVA

Model name

Model name <Indoor unit>

PVA-A30AA4

PVA-A12, 18, 24, 30, 36, 42AA7

PVA-A36AA4

Multi-Position Air Handler

PVA-A42AA4

P-SERIES

INDOOR UNIT

SAFETY PRECAUTION1

1-1. Always observe for safety

Before obtaining access to terminal, all supply circuits must be disconnected.

1-2. Cautions related to new refrigerant

Cautions for units utilising refrigerant R410A

Use new refrigerant pipes.

In case of using the existing pipes for R22, be careful with the followings.

· For A36 and A42, be sure to perform replacement oper-

ation before test run.

· Change flare nut to the one provided with this product.

Use a newly flared pipe.

· Avoid using thin pipes.

Make sure that the inside and outside of refrigerant piping is clean and it has no contamination such as sulfur hazardous for use, oxides, dirt, shaving particles, etc. In addition, use pipes with specified thickness.

Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.

Store the piping to be used indoors during installation and 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.

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 flow check valve.

Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Tools for R410A Gauge manifold Charge hose Gas leak detector

Torque wrench

Flare tool Size adjustment gauge Vacuum pump adaptor

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 ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.

Ventilate the room if refrigerant leaks during

Charge refrigerant from liquid phase of gas cylinder.

If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

[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 specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

2

Unit

Gravimeter

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

No. Tool name Specifications

1 Gauge manifold · Only for R410A

· Use the existing fitting specifications. (UNF1/2)

· Use high-tension side pressure of 5.3MPa·G or over.

2 Charge hose · Only for R410A

· Use pressure performance of 5.09MPa·G or over.

3 Electronic scale

4 Gas leak detector · Use the detector for R134a, R407C or R410A.

5 Adaptor for reverse flow check · Attach on vacuum pump.

6 Refrigerant charge base

7 Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)

· Cylinder with syphon

8 Refrigerant recovery equipment

PART NAMES AND FUNCTIONS2

Indoor Unit

•

(1)Vertical

(2)Horizontal Right

Air inlet

Air outlet

3

Service Ref. Power supply (phase, cycle, voltage)

Max. Fuse Size Min. Circuit Ampacity A

A

kW

F.L.A

m

3

/min (CFM)

Pa (in.WG)

Fan (drive) x No. Fan motor output

Fan motor Airﬂow (Low-Mid-High)

External ﬁnish Heat exchanger

Fan

External static pressure Operation control & Thermostat Sound pressure level (Low-Mid-High)

dB (A)

Drain pipe mm (in.) Dimensions W mm (in.)

D mm (in.) H mm (in.)

kg (lbs)

INDOOR UNIT

Weight

75Pa (0.30 in.WG) 125Pa (0.50 in.WG) 200Pa (0.80 in.WG)

Fan (drive) x No. Fan motor output

Fan motor Airﬂow (Low-Mid-High)

External ﬁnish Heat exchanger

Fan

External static pressure

Operation control & Thermostat

1 phase, 60Hz, 208/230V

15

3.00

PVA-A12AA7

Galvanized steel cabinet - Powder coated Slate Gray

Plate ﬁn coil

Sirocco fan

x 1

0.121

2.4

7.9 - 9.6 - 11.3 (280 - 340 - 400) 75-125-200 (0.30-0.50-0.80)

Remote controller & built-in

24-28-32 27-31-35 32-36-41

19.05 (3/4) FPT 432 (17)

548 (21-5/8) 1275 (50-1/4)

51 (113)

Service Ref. Power supply (phase, cycle, voltage)

Max. Fuse Size Min. Circuit Ampacity A

A

kW

F.L.A

m

3

/min (CFM)

Pa (in.WG)

Sound pressure level (Low-Mid-High)

dB (A)

Drain pipe mm (in.) Dimensions W mm (in.)

D mm (in.) H mm (in.)

kg (lbs)

INDOOR UNIT

Weight

75Pa (0.30 in.WG) 125Pa (0.50 in.WG) 200Pa (0.80 in.WG)

1 phase, 60Hz, 208/230V

15

3.00

PVA-A18AA7

Galvanized Steel Cabinet - Powder coated Slate Gray

Plate ﬁn coil

Sirocco fan

x 1

0.121

2.40

14.6 - 17.7 - 20.8 (515 - 625 - 735) 75-125-200 (0.30-0.50-0.80)

Remote controller & built-in

28-33-36 30-34-38 34-38-42

19.05 (3/4) FPT 432 (17)

548 (21-5/8)

1275 (50-1/4)

51 (113)

(3)Horizontal left

(4)Down flow

Air inlet

Air outlet

SPECIFICATION3

Air inlet

Air outlet

4

Service Ref. Power supply (phase, cycle, voltage)

Max. Fuse Size Min. Circuit Ampacity A

A

kW

F.L.A

m

3

/min (CFM)

Pa (in.WG)

Sound pressure level (Low-Mid-High)

dB (A)

Drain pipe mm (in.) Dimensions W mm (in.)

D mm (in.) H mm (in.)

kg (lbs)

INDOOR UNIT

Weight

75Pa (0.30 in.WG) 125Pa (0.50 in.WG) 200Pa (0.80 in.WG)

Fan (drive) x No. Fan motor output

Fan motor Airﬂow (Low-Mid-High)

External ﬁnish Heat exchanger

Fan

External static pressure

Operation control & Thermostat

1 phase, 60Hz, 208/230V

15

4.13

PVA-A30AA7

Galvanized steel cabinet - Powder coated Slate Gray

Plate ﬁn coil

Sirocco fan

x 1

0.121

3.3

17.3-21.1-24.8 (613-744-875) 75-125-200 (0.30-0.50-0.80)

Remote controller & built-in

30-34-38 32-36-40 35-39-43

19.05 (3/4) FPT 534 (21)

548 (21-5/8)

1378 (54-1/4)

64 (141)

Service Ref. Power supply (phase, cycle, voltage)

Max. Fuse Size Min. Circuit Ampacity A

A

kW

F.L.A

m

3

/min (CFM)

Pa (in.WG)

Sound pressure level (Low-Mid-High)

dB (A)

Drain pipe mm (in.) Dimensions W mm (in.)

D mm (in.) H mm (in.)

kg (lbs)

INDOOR UNIT

Weight

75Pa (0.30 in.WG) 125Pa (0.50 in.WG) 200Pa (0.80 in.WG)

1 phase, 60Hz, 208/230V

15

5.50

PVA-A36AA7

Galvanized Steel Cabinet - Powder coated Slate Gray

Plate ﬁn coil

Sirocco fan

x 1

0.430

4.40

22.3-27.1-31.9 (788-956-1125) 75-125-200 (0.30-0.50-0.80)

Remote controller & built-in

30-34-38 32-36-40 37-41-45

19.05 (3/4) FPT 635 (25)

548 (21-5/8)

1511 (59-1/2)

78 (172)

Fan (drive) x No. Fan motor output

Fan motor Airﬂow (Low-Mid-High)

External ﬁnish Heat exchanger

Fan

External static pressure

Operation control & Thermostat

Service Ref. Power supply (phase, cycle, voltage)

Max. Fuse Size Min. Circuit Ampacity A

A

kW

F.L.A

m

3

/min (CFM)

Pa (in.WG)

Sound pressure level (Low-Mid-High)

dB (A)

Drain pipe mm (in.) Dimensions W mm (in.)

D mm (in.) H mm (in.)

kg (lbs)

INDOOR UNIT

Weight

75Pa (0.30 in.WG) 125Pa (0.50 in.WG) 200Pa (0.80 in.WG)

1 phase, 60Hz, 208/230V

15

4.13

PVA-A24AA7

Galvanized steel cabinet - Powder coated Slate Gray

Plate ﬁn coil

Sirocco fan

x 1

0.244

3.3

17.3-21.1-24.8 (613-744-875) 75-125-200 (0.30-0.50-0.80)

Remote controller & built-in

30-34-38 32-36-40 35-39-43

19.05 (3/4) FPT 534 (21)

548 (21-5/8)

1378 (54-1/4)

64 (141)

Fan (drive) x No. Fan motor output

Fan motor Airﬂow (Low-Mid-High)

External ﬁnish Heat exchanger

Fan

External static pressure

Operation control & Thermostat

5

Service Ref. Power supply (phase, cycle, voltage)

External ﬁnish Heat exchanger

Fan

Operation control & Thermostat

INDOOR UNIT

Sound pressure level (Low-Mid-High)

Drain pipe mm (in.) Dimensions W mm (in.)

Weight

Max. Fuse Size Min. Circuit Ampacity A

Fan (drive) x No. Fan motor output

Fan motor Airﬂow (Low-Mid-High) External static pressure

75Pa (0.30 in.WG) 125Pa (0.50 in.WG) 200Pa (0.80 in.WG)

D mm (in.) H mm (in.)

3

m

/min (CFM)

Pa (in.WG)

kg (lbs)

A

kW

F.L.A

dB (A)

PVA-A42AA7

1 phase, 60Hz, 208/230V

Galvanized Steel Cabinet - Powder coated Slate Gray

29.4-35.7-42.0 (1040-1262-1485) 75-125-200 (0.30-0.50-0.80)

Remote controller & built-in

15

5.63

Plate ﬁn coil

Sirocco fan

19.05 (3/4) FPT

x 1

0.430

4.50

34-38-42

36-40-44

39-43-47

635 (25)

548 (21-5/8)

1511 (59-1/2)

78 (172)

6

FAN PERFORMANCE AND CORRECTED AIR FLOW4

MVZ-A12AA4

PVA-A12AA7

• Vertical, Horizontal Right, Horizontal Left • Downflow

100

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

100

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

[0.60]

[0.50]

[0.40]

Static pressure (Pa)[in.WG]

75

50

Middle

High

Low

25

0

[0]

7

[247]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

150

125

100

10

[353]

Airflow rate (m

3

/min)[cfm]

High

Middle

14

[494]

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

[0.60]

[0.50]

[0.40]

[0.30]

Static pressure (Pa)[in.WG]

75

50

High

Middle

Low

25

0

[0]

7

[247]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

150

125

10

[353]

Airflow rate (m

3

/min)[cfm]

High

100

Middle

75

14

[494]

[0.30]

[0.20]

[0.90]

[0.80]

[0.70]

[0.60]

Static pressure (Pa)[in.WG]

[0.50]

[0.40]

[0.30]

75

Low

50

7

[247]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

225

200

175

150

10

[353]

Airflow rate (m

3

/min)[cfm]

High

Middle

125

100

75

7

[247]

Low

10

[353]

Airflow rate (m

3

/min)[cfm]

14

[494]

14

[494]

[0.20]

[0.10]

[0.90]

[0.80]

[0.70]

[0.60]

Static pressure (Pa)[in.WG]

[0.50]

[0.40]

[0.30]

Low

50

25

7

[247]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

225

200

175

150

10

[353]

Airflow rate (m

3

/min)[cfm]

High

Middle

125

100

75

7

[247]

Low

10

[353]

Airflow rate (m

3

/min)[cfm]

14

[494]

14

[494]

7

MVZ-A24AA4

PVA-A18AA7

• Vertical, Horizontal Right, Horizontal Left • Downflow

100

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

100

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

[0.60]

[0.50]

[0.40]

Static pressure (Pa)[in.WG]

75

50

Middle

High

Low

25

0

[0]

150

125

100

13

[459]

15

[530]

Airflow rate (m

3

/min)[cfm]

20

[706]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

High

Middle

24

[847]

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

[0.60]

[0.50]

[0.40]

[0.30]

Static pressure (Pa)[in.WG]

75

50

High

Middle

Low

13

[530]

15

Airflow rate (m

3

/min)[cfm]

20

[706]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

High

150

125

100

25

0

[0]

[459]

Middle

75

24

[847]

[0.30]

[0.20]

[0.90]

[0.80]

[0.70]

[0.60]

Static pressure (Pa)[in.WG]

[0.50]

[0.40]

[0.30]

75

Low

50

225

200

175

150

13

[459]

15

[530]

Airflow rate (m

3

/min)[cfm]

20

[706]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

Middle

125

100

Low

75

13

[459]

15

[530]

Airflow rate (m

3

/min)[cfm]

High

20

[706]

24

[847]

22

[777]

[0.20]

[0.10]

[0.90]

[0.80]

[0.70]

[0.60]

Static pressure (Pa)[in.WG]

[0.50]

[0.40]

[0.30]

50

25

225

200

175

150

13

[459]

[530]

15

Airflow rate (m

3

/min)[cfm]

20

[706]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

Middle

Low

125

100

Low

75

13

[459]

[530]

15

3

Airflow rate (m

/min)[cfm]

High

20

[706]

24

[847]

22

[777]

8

MVZ-A30AA4

PVA-A24AA7

• Vertical, Horizontal Right, Horizontal Left • Downflow

100

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

100

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

[0.60]

[0.50]

[0.40]

[0.30]

Static pressure (Pa)[in.WG]

[0.20]

75

50

Middle

High

Low

25

0

[0]

15

[530]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

150

125

100

20

[706]

Airflow rate (m

3

/min)[cfm]

[883]

High

Middle

75

50

Low

3

/min)[cfm]

High

25

[883]

29

[1024]

75

[0.30]

50

[0.20]

Static pressure (Pa)[in.WG]

25

[0.10]

0

150

[0.60]

125

[0.50]

100

[0.40]

[0]

15

[530]

25

29

[1024]

Low

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

Middle

20

[706]

Airflow rate (m

Middle

75

[0.30]

Static pressure (Pa)[in.WG]

Low

50

[0.20]

25

[0.10]

15

[530]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

225

[0.90]

200

[0.80]

175

[0.70]

150

[0.60]

20

[706]

Airflow rate (m

3

/min)[cfm]

High

[883]

25

29

[1024]

[0.10]

225

[0.90]

200

[0.80]

175

[0.70]

150

[0.60]

25

15

[530]

20

[706]

Airflow rate (m

3

/min)[cfm]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

High

Middle

25

[883]

28

[989]

Middle

Static pressure (Pa)[in.WG]

125

[0.50]

100

[0.40]

[0.30]

75

15

[530]

Low

20

[706]

Airflow rate (m

3

/min)[cfm]

[883]

25

29

[1024]

Static pressure (Pa)[in.WG]

125

[0.50]

100

[0.40]

[0.30]

75

15

[530]

Low

20

[706]

Airflow rate (m

3

/min)[cfm]

25

[883]

27

[953]

9

PVA-A30AA4

PVA-A30AA7

• Vertical, Horizontal Right, Horizontal Left • Downflow

100

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

100

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

[0.60]

[0.50]

[0.40]

[0.30]

Static pressure (Pa)[in.WG]

[0.20]

75

50

Middle

Low

25

0

[0]

15

[530]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

150

125

100

20

[706]

Airflow rate (m

3

/min)[cfm]

Middle

75

Low

50

[883]

High

[0.30]

75

High

50

[0.20]

Static pressure (Pa)[in.WG]

25

[0.10]

150

[0.60]

125

[0.50]

[0]

25

29

[1024]

Low

0

15

[530]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

Middle

20

[706]

Airflow rate (m

3

/min)[cfm]

High

25

[883]

29

[1024]

High

100

[0.40]

Middle

75

[0.30]

Static pressure (Pa)[in.WG]

Low

50

[0.20]

25

[0.10]

15

[530]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

225

[0.90]

200

[0.80]

175

[0.70]

150

[0.60]

20

[706]

Airflow rate (m

3

/min)[cfm]

[883]

25

29

[1024]

High

Middle

Static pressure (Pa)[in.WG]

125

[0.50]

100

[0.40]

75

[0.30]

15

[530]

Low

20

[706]

Airflow rate (m

3

/min)[cfm]

[883]

25

29

[1024]

10

[0.10]

[0.90]

[0.80]

[0.70]

[0.60]

Static pressure (Pa)[in.WG]

[0.50]

[0.40]

[0.30]

25

15

[530]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

225

200

175

150

20

[706]

Airflow rate (m

3

/min)[cfm]

Middle

125

100

Low

75

15

[530]

20

[706]

Airflow rate (m

3

/min)[cfm]

[883]

High

25

[883]27[953]

28

[989]

PVA-A36AA4

PVA-A36AA7

• Vertical, Horizontal Right, Horizontal Left • Downflow

100

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

[0.40]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

100

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

[0.60]

[0.50]

[0.40]

[0.30]

Static pressure (Pa)[in.WG]

[0.20]

75

50

Middle

Low

25

0

[0]

20

[706]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

150

125

100

25

[883]

Airflow rate (m

30

[1059]

3

/min)[cfm]

Middle

75

Low

50

High

35

[1236]

37

[1306]

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

[0.60]

[0.50]

[0.40]

[0.30]

Static pressure (Pa)[in.WG]

[0.20]

75

High

50

Middle

Low

25

0

[0]

20

[706]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

150

125

25

[883]

Airflow rate (m

30

[1059]

3

/min)[cfm]

High

100

Middle

75

Low

50

35

[1236]

37

[1306]

25

[0.10]

20

[706]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

225

[0.90]

200

[0.80]

175

[0.70]

150

[0.60]

25

[883]

Airflow rate (m

30

[1059]

3

/min)[cfm]

High

35

[1236]

37

[1306]

Middle

Static pressure (Pa)[in.WG]

125

[0.50]

100

[0.40]

75

[0.30]

[706]

Low

20

25

[883]

Airflow rate (m

30

[1059]

3

/min)[cfm]

35

[1236]

37

[1306]

11

[0.10]

[0.90]

[0.80]

[0.70]

[0.60]

Static pressure (Pa)[in.WG]

[0.50]

[0.40]

[0.30]

25

20

[706]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

225

200

175

150

25

[883]

Airflow rate (m

30

[1059]

3

/min)[cfm]

High

Middle

125

100

Low

75

20

[706]

25

[883]

Airflow rate (m

30

[1059]

3

/min)[cfm]

35

[1236]

35

[1236]

37

[1306]

37

[1306]

PVA-A42AA4

PVA-A42AA7

• Vertical, Horizontal Right, Horizontal Left • Downflow

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

125

100

75

50

Low

25

[0.40]

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz

100

75

50

Middle

Low

25

High

[0.50]

[0.40]

[0.30]

[0.20]

Static pressure (Pa)[in.WG]

[0.10]

High

Middle

[0.60]

[0.50]

[0.40]

Static pressure (Pa)[in.WG]

[0.30]

[0.20]

[0.90]

0

[0]

150

125

100

26

[918]

30

[1059]

35

[1236]

Airflow rate (m

3

/min)[cfm]

40

[1412]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

Middle

75

Low

50

225

26

[918]

30

[1059]

[1236]

Airflow rate (m

35

3

/min)[cfm]

External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz

High

40

[1412]

45

[1589]

47

[1660]

44

[1554]

[0.70]

[0.60]

[0.50]

[0.40]

Static pressure (Pa)[in.WG]

[0.30]

[0.20]

[0.90]

0

[0]

26

[918]

External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz

175

150

125

100

30

[1059]

Airflow rate (m

35

[1236]

3

/min)[cfm]

Middle

75

Low

50

26

[918]

External static pressure 0.70 [in.WG] (175Pa) 208/230V 60Hz

225

30

[1059]

Airflow rate (m

35

[1236]

3

/min)[cfm]

High

40

[1412]

40

[1412]

43

[1518]

43

[1518]

200

[0.80]

175

[0.70]

150

[0.60]

Static pressure (Pa)[in.WG]

[0.50]

[0.40]

[0.30]

125

100

Low

75

26

[918]

30

[1059]

Middle

Airflow rate (m

35

[1236]

3

/min)[cfm]

High

40

[1412]

43

[1518]

12

[0.80]

[0.70]

[0.60]

Static pressure (Pa)[in.WG]

[0.50]

[0.40]

[0.30]

200

175

150

125

100

High

Middle

Low

75

26

[918]

30

[1059]

Airflow rate (m

35

[1236]

3

/min)[cfm]

40

[1412]

43

[1518]

PVA-A12, 18, 24, 30, 36, 42AA7 Air Filter Power Source: 60Hz, 208/230V

External static pressure (Pa) [In.WG]

25

[0.100]

20

[0.080]

15

[0.060]

[0.040]

[0]

10

5

0

0 [0]

10 [353]

20 [706]

Airow rate (m /min)[CFM]

30 [1059]

3

40 [1412]

50

[1766]

13

SOUND PRESSURE LEVELS5

5-1. Sound pressure level

Multi-Position

5-2. NC curves

PVA-A12AA7

PVA-A18AA7

14

PVA-A24AA7 PVA-A30AA7

15

PVA-A36AA7

PVA-A42AA7

16

6 OUTLINES & DIMENSIONS

Ref rigerant piping

2-ø4.6 Bur ring Holes

for elect ric heat installation

ø26 Kno ckout Hole

(Indoor / Outdoor unit connection)

Top

view

Ref rigerant piping

are connection(gas)

Ref rigerant piping

are connection(liquid)

2-ø4.6 Bur ring Holes

for elect ric heat installation

ø26 Kno ckout Hole

(Indoor / Outdoor unit connection)

Top

view

2

1

INDOOR UNIT

PVA-A12, 18, 24, 30, 36, 42AA7

PVA-A12AA7

PVA-A18AA7

PVA-A24AA7

PVA-A30AA7

PVA-A36AA7

PVA-A42AA7

432 (17) 376 (14-13/16) 281 (11-1/8) 224 (8-7/8) 1275 (50-1/4) 680 (26-13/16) 823 (32-7/16) 735.5 (29) 360 (14-3/16) Φ 12.7 (1/2) Φ 6.35 (1/4)

534 (21) 477 (18-13/16) 382.6 (15-1/8) 266.5 (10-1/2) 1378 (54-1/4) 737 (29-1/16) 953.5 (37-9/16) 792 (31-3/16) 461 (18-3/16)

635 (25) 579 (22-13/16) 484.6 (19-1/8) 317.5 (12-1/2) 1511 (59-1/2) 798.5 (31-7/16) 1053 (41-1/2) 853.5 (33-5/8) 563 (22-3/16)

Model A B C D E F G H J

Left side

view

G

H

66(2-5/8)

77.8(3-1/8)

70(2-13/16)

55(2-3/16)

ø19.05(3/4) 3/4"FPT

(Horizontal left)

(Indoor /Outdoor

ø26 Knockout Hole

unit connection)

2

Refrigerant piping

brazing connection(liquid)

Secondary drain pipe

(Emergency draining)

ø19.05(3/4) 3/4"FPT

Primary drain pipe

(Gravity drain)

1

Refrigerant piping

brazing connection(gas)

are connection(gas)

for electric heat installation

(Indoor / Outdoor unit connection)

2-ø4.6 Burring Holes

Φ 15.88 (5/8) Φ 9.52 (3/8)



Gas Pipe

J

36.8(1-1/2)

Model

3

Nominal Filter size

508X508X25.4

Bottom

view

PVA-A24AA7 508 x 508 x 25.4

PVA-A30AA7

PVA-A36AA7 508 x 609.6 x 25.4

PVA-A42AA7

(20 x 20 x 1)

(20 x 24 x 1)

3

Air filter

A

PVA-A12AA7 508 x 406.4 x 25.4

PVA-A18AA7

Model



Nominal Filter Size

(20 x 16 x 1)

Air inlet

525.5(20-3/4)50.8(2)470(18-9/16)

Bottom

Secondary drain pipe

(Emergency draining)

ø19.05(3/4) 3/4"FPT

55(2-3/16)

D

92(3-5/8) 30(1-3/16)

ø19.05(3/4) 3/4"FPT

(Horizontal Right)

Primary drain pipe

(Gravity drain)

ø19.05(3/4) 3/4"FPT

8(3/8)

F

43(1-3/4) 8(3/8)

8(3/8)

Primary drain pipe

(Gravity drain)

ø19.05(3/4) 3/4"FPT

Secondary drain pipe

(Emergency draining)

Control box

43(1-3/4)

55(2-3/16)

E

Air outlet

B(Duct)

C

28.8(1-3/16)

Terminal block

(Remote controller transmission)

Terminal block

(Indoor / Outdoor unit connection)

76(3)

13.2(9/16) 24(15/16)

Front

view

Top

(Remote controller transmission)

ø26 Knockout Hole

117.4 (4-5/8)

ø26 Knockout Hole

view

Top

(Remote controller transmission)

ø26 Knockout Hole

Note 1.Keep the service space for maintenance at the front.



Liquid Pipe

Unit: mm (in.)

Duct Connection

477X402

(14-13/16 x 15-7/8)

(18-13/16 x 15-7/8)

(22-13/16 x 15-7/8)

376 x 402

477 x 402

579 x 402

Right side

view

Duct Connection

17

548(21-5/8)

402(15-7/8)

(Duct)

Unit:mm(in.)

609.6(24)

Length of Unit

Horizontal Installation

609.6(24)

Width of Unit

Vertical Installation

Clearance Area

18

7 WIRING DIAGRAM

S3

S1 S2

RFI

1

CNXB1

CN2A

U

(BLUE)

TB15

CNXA2

t˚

TH2

TH5

TB4

CN2L

(BLUE)

CN22

t˚

TH1

CN3C

2

LED3

(RED)

(BLUE) CNXA1 CNMFCNXC1

ON

OFF

LED2

LED1

DC280-340V

RECTIFIER CIRCUIT

(BLACK)

CN44

(RED)

ZNR01

CND

ZNR02

DSA

F01

CNXC2

CNXB2

CN51

CN41

CN105

CN90

CN20

SWE

X10

(RED)

U

FAN MOTOR

P. B.

I.B.

INSIDE SECTION OF CONTROL BOX

4

4123

3

2

4 5

1 2

2

1

3 4

1

5

3

1

2 1

153

2

1

4

3

1 2

12

321

17654

3~

MS

CNF

(GREEN)

CN24-1

(YELLOW)

CN24-2

(BLUE)

CN2C

(BLACK)

CNER

(RED)

CN25

W.B.

1 2 3 4 5 6 7 8 9

t˚

SW2

SW1

SW5

OPTIONAL PARTS

4

3

1 2

CN4F

CN32

4

5

3 2 1

Note1.Since the outdoor side electric wiring may change

to check the outdoor unit electric wiring for

2.Indoor and outdoor connecting wires are made with

polarities,make wiring matching terminal numbers (S1,S2,S3).

3.Symbols used in wiring diagram above are as :CONNECTOR

:TERMINAL (HEAVY DOTTED LINE):FIELD WIRING (THIN DOTTED LINE):OPTIONAL PARTS

4.Use copper supply wire.

UTILISER DES FILS D'ALIMENTATION EN CUIVRE.

SYMBOL EXPLANATION

MODEL

MVZ-A12AA4

MVZ-A18AA4

MVZ-A24AA4

MVZ-A30AA4

MVZ-A36AA4

RU

BZ1

CN1

123456789

SW2SW1

LED1

Model

1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 6 7 8

SWITCH

SW1

SW2

SW5

SW1

SW5

ONONON

ON

PVA-A42AA7

PVA-A12AA7

PVA-A18AA7

PVA-A24AA7

ONONON

ON

SW5

PVA-A36AA7

ON

SW1

ON

SW5

PVA-A30AA7

ONONON

ON

SW5

PVA-A12, 18, 24, 30, 36, 42AA7

1

SW1

(BLUE) CN3C

3

SW2

CN90

1 2 3

SW5

4 5 6 7 8 9

LED3

(GREEN)

CNF

CN44

123456789

CN1

LED1

BZ1

RU

W.B.

OPTIONAL PARTS

SYMBOL EXPLANATION

SYMBOL I.B.

CN24-1 CN24-2 CN25 CN2A CN2C CN2L CN32 CN41 CN51 CN90 CN105 CNER CNF LED1 LED2 LED3

INDOOR CONTROLLER BOARD CONNECTOR (HEATER CONTROL 1ST) CONNECTOR (HEATER CONTROL 2ND) CONNECTOR (HUMIDITY OUTPUT) CONNECTOR (0-10V ANALOG INPUT) CONNECTOR (ERV OUTPUT) CONNECTOR (LOSSNAY) CONNECTOR (REMOTE SWITCH) CONNECTOR (HA TERMINAL-A) CONNECTOR (CENTRALLY CONTROL) CONNECTOR (WIRELESS) CONNECTOR (RADIO FREQUENCY INTERFACE) CONNECTOR (ERV INPUT) CONNECTOR (HUMIDITY INPUT) LED(POWER SUPPLY) LED(REMOTE CONTROLLER SUPPLY) LED(TRANSMISSION INDOOR-OUTDOOR)

SYMBOL I.B.

CN24-1 CN24-2

SW2SW1

CN25 CN2A CN2C CN2L CN32 CN41 CN51 CN90 CN105 CNER CNF LED1 LED2 LED3

t˚

TH5

TH2

NAME

INDOOR CONTROLLER BOARD CONNECTOR (HEATER CONTROL 1ST) CONNECTOR (HEATER CONTROL 2ND) CONNECTOR (HUMIDITY OUTPUT) CONNECTOR (0-10V ANALOG INPUT) CONNECTOR (ERV OUTPUT) CONNECTOR (LOSSNAY) CONNECTOR (REMOTE SWITCH) CONNECTOR (HA TERMINAL-A) CONNECTOR (CENTRALLY CONTROL) CONNECTOR (WIRELESS) CONNECTOR (RADIO FREQUENCY INTERFACE) CONNECTOR (ERV INPUT) CONNECTOR (HUMIDITY INPUT) LED(POWER SUPPLY) LED(REMOTE CONTROLLER SUPPLY) LED(TRANSMISSION INDOOR-OUTDOOR)

OFF

ON

CN4F

1 2 3 4

NAME

SWE

(RED)

1

CN20 2 3 4

t˚

TH1

CN41

(RED) CNER

(BLUE)

(BLACK)

CN2C

CN24-2

(YELLOW)

CN24-1

1 2

SYMBOL NAME

I.B.

SW1 SW2 SW5 SWE

P. B.

F01 ZNR01,02 DSA X10

TH1 TH2 TH5

TB4

TB15

RFI

I.B.

CN32

LED2

CN25

CN51

CNXB2

(RED)

1 2

CN2L

3 4 5

INDOOR CONTROLLER BOARD SWITCH (FOR MODEL SELECTION) SWITCH (FOR CAPACITY CODE) SWITCH (FOR MODE SELECTION) CONNECTOR (EMERGENCY OPERATION) POWER SUPPLY BOARD FUSE AC250V 6.3A VARISTOR ARRESTOR AUX.RELAY

INTAKE AIR TEMP. THERMISTOR

.

THERMISTOR/LIQUID

PIPE TEMP COND

.

/EVA.TEMP. THERMISTOR

TERMINAL BLOCK (INDOOR/OUTDOOR CONNECTING LINE)

TERMINAL BLOCK (REMOTE CONTROLLER TRANSMISSION LINE)

CN105

(BLACK)

CN2A

(BLUE)

CN22

LED1

CNXC2

1 2

(RED)

(BLUE) CNXA2

1 2 3 4

5 4 3 2 1

2 1

OPTIONAL PARTS

W.B.

RU BZ1 LED1 SW1 SW2

R.B.

TB6

RADIO FREQUENCY INTERFACE FOR RF THERMOSTAT

SYMBOL NAME

I.B.

SW1 SW2 SW5 SWE

P. B.

F01 ZNR01,02 DSA X10

INDOOR CONTROLLER BOARD SWITCH (FOR MODEL SELECTION) SWITCH (FOR CAPACITY CODE) SWITCH (FOR MODE SELECTION) CONNECTOR (EMERGENCY OPERATION) POWER SUPPLY BOARD FUSE AC250V 6.3A VARISTOR ARRESTOR AUX.RELAY

TH1

INTAKE AIR TEMP. THERMISTOR

TH2

PIPE TEMP

TH5

COND TERMINAL BLOCK

TB4

(INDOOR/OUTDOOR CONNECTING LINE)

TERMINAL BLOCK

TB15

(REMOTE CONTROLLER TRANSMISSION LINE)

RFI

RADIO FREQUENCY INTERFACE FOR RF THERMOSTAT

. THERMISTOR/LIQUID

./EVA.TEMP. THERMISTOR

INSIDE SECTION OF CONTROL BOX

P. B.

DC280-340V RECTIFIER CIRCUIT

U

ZNR02

CNXB1

4123

153

DSA

5

ZNR01

U

12

(RED) CND

F01

(BLUE) CNXA1 CNMFCNXC1

X10

321

4

NAMESYMBOL

IR WIRELESS REMOTE CONTROLLER BOARD RECEIVING UNIT BUZZER LED(RUN INDICATOR) SWITCH(HEATING ON/OFF) SWITCH(COOLING ON/OFF) WIRED REMOTE CONTROLLER BOARD TERMINAL BLOCK

(REMOTE CONTROLLER TRANSMISSION LINE)

MS 3~

FAN MOTOR

OPTIONAL PARTS

W.B.

RU BZ1 LED1 SW1 SW2

R.B.

TB6

TRANSMISSION

WIRES DC 12V

TB15

1

2

TB4

S1 S2 S3

MODEL

MVZ-A12AA4

17654

MVZ-A18AA4

MVZ-A24AA4

MVZ-A30AA4

MVZ-A36AA4

Note1.Since the outdoor side electric wiring may change

to check the outdoor unit electric wiring for

2.Indoor and outdoor connecting wires are made with polarities,make wiring matching terminal numbers

(S1,S2,S3).

3.Symbols used in wiring diagram above are as :CONNECTOR

:TERMINAL (HEAVY DOTTED LINE):FIELD WIRING (THIN DOTTED LINE):OPTIONAL PARTS

4.Use copper supply wire. UTILISER DES FILS D'ALIMENTATION EN CUIVRE.

SW1

TB6

1 2

R.B.

REMOTE CONTROLLER

OPTIONAL PARTS

TO OUTDOOR UNIT

SWITCH

ON

54321

ON

54321

ON

54321

ON

54321

ON

54321

SW5

1

ON

SW2SW2

SW5

554433221

ON

SW5

1

ON

554433221

ON

SW2SW2 SW2

SW5SW5

12345

servicing.

follows.

54321687

be sure

NAMESYMBOL

IR WIRELESS REMOTE CONTROLLER BOARD RECEIVING UNIT BUZZER LED(RUN INDICATOR) SWITCH(HEATING ON/OFF) SWITCH(COOLING ON/OFF) WIRED REMOTE CONTROLLER BOARD TERMINAL BLOCK

(REMOTE CONTROLLER TRANSMISSION LINE)

19

8 REFRIGERANT SYSTEM DIAGRAM

PVA-A12, 18, 24, 30, 36, 42AA7

Strainer (#50)

Heat exchanger

Refrigerant GAS pipe connection (Flare)

Thermistor TH5 (Cond./ Eva.temperature)

Thermistor TH2 Pipe temperature(Liquid)

Refrigerant LIQUID pipe connection (Flare)

Thermistor TH1 (Room temperature)

Distributor with strainer (#50)

Strainer (#50)

Refrigerant flow in cooling Refrigerant flow in heating

20

9 HEATER CONTROL

9-1. Control Specifications And Function Setting

• Table 1 shows the mode setting for the field-installed heater.

Table. 1 [Function Table] Select unit numbers 01 to 03 or all units (AL [wired remote controller] / 07 [IR wireless remote controller])

Mode (function ) No.

Wired remote controller

(RF thermostat)

11 ( 111) 23 (123)

1 1 ● No Heater Present

2 1 ─

2 2 ─

*1

Heater will not operate during all error modes. Heater will only operate during a communication error between indoor unit and

Factory Setting Mode

Heater Available

Disable heater during

Defrost and Error

Heater Available

Enable heater and fan

during Defrost and Error

*1

outdoor unit.

• Table 2 shows how the field-installed heater is controlled.

Heater Operation In

Error

OFF OFF High

ON ON High

Heater Operation During

Defrost

Fan Control When

Heater ON

Table. 2 [Heater Control Table]

Condition

Mode Change

EH1 ON ○ AND ○

EH2 ON ○ AND ○ AND ○

EH1 OFF ○

EH2 OFF ○

KEY

• EH1: Electric Heater 1

• EH2: Electric Heater 2

• To: Set point temperature

• TRA: Return Air temperature

• X: Time delay (Selectable. Default is 24 min. Selectable to 14, 19, or 29 min)

(To -TRA) >

2.7 ° F

[1.5 °C]

AND

TRA has not

increased by

0.9 °F [0.5°

C] in X min

EH1 ON for

> 7 min

AND

(To -TRA) >

2.7 ° F

[1.5 ° C]

AND

increased by 0.9 ° F

[0.5° C] in 7 min

TRA has not

(To -TRA) <

0.9 °F

[0.5° C]

21

• Table 3 shows how the time delay is selected

OFF

ON

T

RA

⑥

②

③

⑥

②

③

⑥

③

T

RA

④

⑥

T

RA

⑤

⑥

Table. 3 [Time Delay Selection Table]

Request Code

390 Monitor Time Delay Setting

391 Set Time Delay to 14 minutes

392 Set Time Delay to 19 minutes

393 Set Time Delay to 24 minutes

394 Set Time Delay to 29 minutes

*1

Time delay can only be selected with MA controller. If use of a non-MA controller is desired, the time delay must first be

selected with the MA controller. Then the non-MA controller can be attached and used. *2

The default time delay setting is 24 minutes.

*3

All delay times are approximate.

*1

Action

*3

*2

• Chart 1 and Table 4 show an example of heater operation.

Chart 1 [Heater Operation Example]

T

o

③

⑥

To - 0.9 °F [0.5 °C]

To - 2.7 °F [1.5 °C]

EH1

EH2

OFF

ON

②

①

X min X min X min

①

②

④

> 7 min

⑤

Table. 4 [Heater Operation Example]

Step Condition Result

①

(To -TRA) > 2.7 °F [1.5 °C] AND TRA has not increased by 0.9 °F [0.5°C] in X min EH1 ON

(To -TRA) < 2.7 °F [1.5 °C] AND TRA increasing faster than 0.9 °F [0.5°C] in 7 min EH2 not ON

(To -TRA) < 0.9 °F [0.5°C] EH1 OFF

T

RA

(To -TRA) > 2.7 °F [1.5 °C] AND TRA has not increased by 0.9 °F [0.5°C] in X min EH1 ON

(To -TRA) > 2.7 °F [1.5 °C] AND TRA not increasing faster than 0.9 °F [0.5°C] in 7 min EH2 ON

(To -TRA) < 0.9 °F [0.5°C]

22

EH1 OFF EH2 OFF

9-2. Fan control

*1 Heater will not operate during all error modes. Heater will only operate during a communication error between indoor unit and outdoor unit. *2 While the heater is on, the fan will operate at high speed regardless of the fan setting on the remote controller.

By setting the Mode No. 23 in the Function Table in section 9-1, the following patterns of fan control will become possible.

Fan control patterns

Fan in defrost Fan(All modes other

than defrost)

Factory setting

CN4Y for FAN control (CN24RELAY-KIT-CM3)

Mode(function) No.23(123)

Disabled (CN4Y cannot be used with this unit)

1

2

STOP(Heater OFF)

Set(Heater ON

*2

)

High

*1

(Heater ON*2)

-

By setting the Mode No. 23 in the Function Table in section 9-1 and using CN4Y from the CN24RELAY-KIT-CM3 kit, the following patters of fan control will become possible.

Fan Control Patterns

CN4Y for FAN control (CN24RELAY-KIT-CM3)

Enabled

Mode (function) No. 23 (123)

1 OFF STOP Set (Heater ON) ●

2 ON STOP High*2 (Heater ON) ─

Heater operation in defrost and error *1

Fan operation in defrost and error

*1 Heater will not operate during all error modes. Heater will only operate during a communication error between indoor unit and outdoor unit *2 While the heater is on, the fan will operate at high speed regardless of the fan setting on the remote controller.

* If a heater is installed in the duct, do not use CN4Y. By doing so, the fan will turn off when the heater is on, which may result in ﬁre.

Fan Speed Setting *3

Mode

Heating Thermo-OFF DEFROST or ERROR

Setting

Very Low Very Low 25 1

Fan Control

STOP Remote Controller Setting 25 2 -

Remote Controller Setting Remote Controller Setting 25 3 -

Fan (All modes other than defrost and error)

Factory Setting

Mode No. Setting Initial Setting

○

*3 Refer to the Installation Manual for function settings.

23

9-3. CN24RELAY-KIT-CM3 (Optional Parts) installation

The following section describes installation of the External Heater Adapter that connects to PEA-A AA series indoor unit. This products is the special wiring parts to drive an electric heater wi th the air conditioner.

(1) Parts list

Check that the following par ts are included in the package.

1) External output cable (with a yellow connector).............................2 in total

Tw o types of cables with differen t connectors are included.

2) Panel heater connector........... ................................................... .... 3 in total

White: 1 Green: 2 (2 types)

(2) Connection to the indoor unit

Use the cables that ﬁt the connectors on the indoor unit control board.

1) External output cable (with a yellow connector) This cable is used to connect a rela y circuit for an interlocked operati on with either an electric or a panel heater. C onnect the cable to CN24 on the indoor unit control board.

2) Panel heater co nnector (with a white connector) This connector is used to perform an interlocked operation

with a p anel heater. Depending on the indoor unit

control board speciﬁcation , connect the cable to CN4Y as appropriate

<Image>

6-3. PAC-YU25HT (Optional Parts) installation

The following section describes installation of the External Heater Adapter that connects to PVA-A AA7 series indoor unit. This products is the special wiring parts to drive an electric heater with the air conditioner.

(1) Parts list

Check that the following parts are included in the package.

1) External output cable..................................................................... 2 in total

Two types of cables with different connectors are included.

2) Panel heater connector.................................................................. 3 in total

White: 3

3) Relay

(2) Connection to the indoor unit

Use the cables that ﬁt the connectors on the indoor unit control board.

1) External output cable This cable is used to connect a relay circuit for an interlocked operation with either an electric or a panel heater. Select the heater output pattern (1st = CN24-1 or 2nd = CN24-2) to use, and connect the cable to the connector on the indoor unit control board that corresponds to the selection.

2) Panel heater connector This connector is used to perform an interlocked operation with a panel heater. Depending on the indoor unit control board speciﬁcation, connect the cable to CN4Y as appropriate.

CN4Y for FAN control (CN24RELAY-KIT-CM3)

24

For relay X use the speciﬁcations given below Operation coil Rated voltage: 12VDC Power consumption: 0.9W or less * Use the diode that is recommended by the relay manufacturer at both ends of the relay coil.

The length of the electrical wiring for the CN24RELAY-KIT-CM3 is 2 meters (6-1/2 ft.)

(3) Locally procured wiring

A basic connection method is shown below.

CN24-1 or CN24-2

X

Remote control board Relay circuit

Adapter

Indoor unit control board

Electric Heater

power source

Electric Heater or panel heater

Red 1

White 2

Preparations in the ﬁeld

Maximum cable length is 10 m (32ft)

Yellow

The following section describes installation of the External Heater Adapter that connects to PEA-A AA series indoor unit. This products is the special wiring parts to drive an electric heater wi th the air conditioner.

(1) Parts list

Check that the following par ts are included in the package.

1) External output cable (with a yellow connector).............................2 in total

Tw o types of cables with differen t connectors are included.

2) Panel heater connector........... ................................................... .... 3 in total

White: 1 Green: 2 (2 types)

(2) Connection to the indoor unit

Use the cables that ﬁt the connectors on the indoor unit control board.

1) External output cable (with a yellow connector) This cable is used to connect a rela y circuit for an interlocked operati on with either an electric or a panel heater. C onnect the cable to CN24 on the indoor unit control board.

2) Panel heater co nnector (with a white connector) This connector is used to perform an interlocked operation

with a p anel heater. Depending on the indoor unit

control board speciﬁcation , connect the cable to CN4Y as appropriate

CN4Y for FAN control (CN24RELAY-KIT-CM3)

<Image>

6-3. PAC-YU25HT (Optional Parts) installation

(3) Wiring

A basic connection method is shown below.

Remote control board Relay circuit

Adapter

Indoor unit control board

Red 1

Electric Heater

power source

Electric Heater or panel heater

Preparations in the ﬁeld

X

White 2

White 1

(applicable only when a panel heater is connected)

Maximum cable length is 10 m (32ft)

White

3

To extend this length, use sheathed 2-core cable. Control cable type: CVV, CVS, CPEV or equivalent. Cable size: 0.5 mm

2

~ 1.25 mm2 (16 to 22 AWG)

Don't extend the cable more than 10 meters (32ft)

Recommended circuit

1-phase power supply

Wiring diagram

(4) Wiring restrictions

Keep the length of the cable connecting to the circuit board of the indoor unit shorter than 10 meters (32ft).

208V, 230V/60Hz

R

S

R

S

Control board

88H

CN24-1 or CN24-2

88H

FS1

FS2 FS1

FS2

Longer than 10 meters (32ft) could cause improper operation.

Use a transit relay when extending wiring such as remote wiring.

CN24

CN4Y

26H

H1

H2

FS1, 2 ----- Thermal fuse

H1, H2 ----- Heater

26H --------- Overheat

88H --------- Electromagnetic contactor

protection thermostat

25

10

g

HUMIDIFIER CONTROL

10-1. Control Specifications

The below table shows how the field installed humidifier and fan speed is controlled.

Mode (function) No. Wired remote controller

(RF thermostat)

13 (113) 16 (116)

2

--Except for heat operationOFF RC settin RC:Remote controller The fan continues to run for 30 seconds after the humidifier stops.

1

2

Humidistat output

CNFinput OFFHeat operation & Thermo OFFOFF RC setting

ON Heat operation & Thermo OFFOFF RC settin

OFFHeat operation & Thermo OFFOFF RC setting

ON Heat operation & Thermo OFFONHigh

Condition (no defrost/no error)

Heat operation & Thermo ON

Heat operation & Thermo ON ON High

Heat operation & Thermo ON

CN25 output

Fan speed

10-2. Installation

A basic connection method is shown below.

Humidifier

power source

SVA

Humidifier

On-site preparation Maximum cable length is 10m(32ft)

XA

Indoor unit control board

CN25

XA

CNF

Humidistat

UseXA relay having following specifications

Rated voltage:12VDC Power consumption:1W or less

Humidistat:Minimum applicable load 1mAat DC

Contact rating voltage:15VDC or more Contact rating current:0.1A or more

26

11

The below table shows how the field installed ERV is controlled.

ERV output ConditionFan speed CN2Coutput

(=Fan output)

CNER input

OFFCool/Heat/Fan operation RC settin

g

ON

DefrostSTOPOFF STOP STOP OFF

ON Cool/Heat/Fan operation RC settingON

DefrostSTOPOFF STOP LowON

E R V output

C ondition

F an s peed

C N2C output

C NE R input

OFF

C ool/Hea t/Fan operation

R C s etting

ON

Defros t

S TO P

OFF

S TO P

OFF

ON

C ool/Hea t/Fan operation

R C s etting

ON

Defros t

S TO P

OFF

S TO P

ON

S TO P

ERV (ENERGY RECOVERY VENTILATION) CONTROL

11-1. Control Specifications

The below table shows how the field installed E R V is controlled.

11-2. Installation

A basic connection method is shown below.

(=F an output)

Indoor unit controlboard

CN2C

ERV

power source

XF

XB

ERV

On-site preparation Maximum cable length is 10m(32ft)

XB

CNER

ERV switch

Use XB relay having following specifications Rated voltage:12VDC Power consumption:1W or less ERV switch:Minimum applicable load 1mA at DC

Contact rating voltage:15VDC or more Contact rating current:0.1A or more

27

12

TROUBLESHOOTING

12-1. Cautions on troubleshooting

(1) Before troubleshooting, check the followings:

1 Check the power supply voltage. 2 Check the indoor/outdoor connecting wire for mis-wiring.

(2) Take care the followings during servicing.

1 Before servicing the air conditioner, be sure to turn off the remote controller first to stop the main unit, and then turn off the breaker. 2 When removing the indoor controller board, hold the edge of the board with care NOT to apply stress on the components. 3 When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.

Lead wires

28

12-2. Self-check function

• Refer to the installation manual that comes with each remote controller for details.

• RF thermostat is not established.

[Output pattern A] Errors detected by indoor unit

IR wireless remote controller

Beeper sounds/OPERATION

INDICATOR lamp flashes

(Number of times)

1 2 3 4 5 6 7 8

9 10 11 12

No sound

[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)

IR wireless remote controller

Beeper sounds/OPERATION

INDICATOR lamp flashes

(Number of times)

1

2

3

4

5

6

7

8

9 10

11

12 13 14

*1 If the beeper does not sound again after the initial two beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not

come on, there are no error records.

*2 If the beeper sounds three times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial two beeps to confirm the self-check start signal was

received, the specified refrigerant address is incorrect.

• On IR wireless remote controller The continuous buzzer sounds from receiving section of indoor unit. Blink of operation lamp

• On wired remote controller Check code displayed on the LCD.

Wired remote controller

RF thermostat

Check code

P1 P2, P9 E6, E7 P4 P5 P6 EE P8 E4 – – Fb – –

Wired remote controller

RF thermostat

Check code

E9 UP U3, U4 UF U2 U1, Ud U5 U8 U6 U7

U9, UH

– – Others

Intake sensor error Pipe (Liquid or 2-phase pipe) sensor error Indoor/outdoor unit communication error Drain sensor error Drain pump error Freezing/Overheating safeguard operation Communication error between indoor and outdoor units Pipe temperature error Remote controller signal receiving error – – Indoor unit control system error (memory error, etc.) No corresponding

Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit) Compressor overcurrent interruption Open/short of outdoor unit thermistors Compressor overcurrent interruption (When compressor locked) Abnormal high discharging temperature/49C worked/ insufficient refrigerant Abnormal high pressure (63H worked)/ Overheating safeguard operation Abnormal temperature of heat sink Outdoor unit fan protection stop Compressor overcurrent interruption/Abnormal of power module Abnormality of super heat due to low discharge temperature Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit/Current sensor error – – Other errors (Refer to the technical manual for the outdoor unit.)

Symptom

Symptom Remark

For details, check the LED display of the outdoor controller board.

Remark

• If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.

PLEASE WAIT

PLEASE WAIT →Error code

Display messages do not appear even when operation switch is turned ON (operation lamp does not light up).

On the IR wireless remote controller with conditions above, following phenomena takes place.

• No signals from the remote controller are accepted.

• OPE lamp is blinking.

• The buzzer makes a short ping sound.

Note: Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)

For about 2 minutes

following power-on

After about 2 minutes has expired

following power-on

Symptom

LED 1, 2 (PCB in outdoor unit)Wired remote controller After LED 1, 2 are lighted, LED 2 is turned off, then only LED 1 is lighted. (Correct operation)

Only LED 1 is lighted. → LED 1, 2 blink.

Only LED 1 is lighted. → LED 1, 2 blinks twice, LED 2 blinks once.

29

Cause

• For about 2 minutes after power-on, operation of the remote controller is not possible due to system start-up. (Correct operation)

• Connector for the outdoor unit’s protection device is not connected.

• Reverse or open phase wiring for the outdoor unit’s power terminal block (L1, L2, L3)

• Incorrect wiring between indoor and outdoor units (incorrect polarity of S1, S2, S3)

• Remote controller wire short

Indicates whether control power is supplied. Make sure that this LED is always lit.

Indicates whether power is supplied to the remote controller. This LED lights only in the case of

the indoor unit which is connected to the outdoor unit refrigerant address “0”.

Indicates state of communication between the indoor and outdoor units. Make sure that this LED is

always blinking.

LED 1 (power for microcomputer)

LED 2 (power for remote controller)

LED 3 (communication between indoor and outdoor units)

AUTO RESTART FUNCTION

Indoor controller board

This model is equipped with the AUTO RESTART FUNCTION. When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are memorized by the indoor controller board. The auto restart function sets to work the moment the power has restored after power failure, then, the unit will restart automatically. Set the AUTO RESTART FUNCTION using the wireless remote controller. (Mode no.1).

For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.

30

12-3. Self-diagnosis action table

Error Code

P1

Abnormal point and detection method

Room temperature thermistor (TH1)

1 The unit is in three-minute resume prevention mode if short/open of thermistor is detected. Abnormal if the

unit does not reset normally after three minutes. (The unit returns to normal

operation, if it has normally reset.) 2 Constantly detected during cooling, drying and heating operation

Short: 90˚C[194˚F] or more Open: -40˚C[-40˚F] or less

Note: Refer to the manual of outdoor unit for the details of display such as F, U, and other E.

Cause

1 Defective thermistor characteristics 2 Contact failure of connector

(CN20) on the indoor controller

board (Insert failure) 3 Breaking of wire or contact failure of thermistor wiring 4 Defective indoor controller

board

Countermeasure

1–3 Check resistance value of thermistor.

0:[32˚F].......15.0k"

10:[50˚F].....9.6k"

20:[68˚F].....6.3k"

30:[86˚F].....4.3k"

40:[104˚F]...3.0k" If you put force on (draw or bend) the lead wire with measuring resistance value of thermistor breaking of wire or contact failure can be detected. 2 Check contact failure of connector (CN20) on

the indoor controller board. Refer to 12-5. Turn the power on again and check restart after inserting connector again.

4 Check room temperature display on remote

controller.

Replace indoor controller board if there is

abnormal difference with actual room

temperature.

Turn the power off, and on again to operate after check.

P2

Pipe temperature thermistor/Liquid (TH2)

1 The unit is in three-minute resume prevention mode if short/open of thermistor is detected. Abnormal if the

unit does not reset normally after three minutes. (The unit returns to normal

operation, if it has normally reset.) 2 Constantly detected during cooling, drying, and heating (except defrosting)

operation.

Short: 90˚C[194˚F] or more Open: -40˚C[-40˚F] or less

Contact failure of drain float switch (CN4F)

1 Extract when the connector of drain float

switch is disconnected. (3 and 4 of connector CN4F is not

short-circuited.) 2 Constantly detected during operation.

1 Defective thermistor characteristics 2 Contact failure of connector

(CN44) on the indoor controller

board (Insert failure) 3 Breaking of wire or contact failure of thermistor wiring 4 Defective refrigerant circuit is

causing thermistor temperature

of 90˚C[194˚F] or more or

-40˚C[-40˚F] or less.

5 Defective indoor controller board

1 Contact failure of connector (Insert failure)

2 Defective indoor controller

board

1–3 Check resistance value of thermistor. For characteristics, refer to (P1) above. 2 Check contact failure of connector (CN44) on

the indoor controller board. Refer to 12-5. Turn the power on again and check restart after inserting connector again.

4 Check pipe <liquid> temperature with remote

controller in test run mode. If pipe <liquid> temperature is extremely low (in cooling mode) or high (in heating mode), refrigerant circuit may have defective.

5 Check pipe <liquid> temperature with remote

controller in test run mode. If there is extreme difference with actual pipe <liquid> temperature, replace indoor controller board.

Turn the power off, and on again to operate after check.

1 Check contact failure of float switch connec-

tor.

Turn the power on again and check after

inserting connector again.

2 Operate with connector (CN4F) short-circuit-

ed.

Refer to 12-5. Replace indoor controller

board if abnormality reappears.

P4

(5701)

31

Error Code

P6

Abnormal point and detection method

Freezing/overheating protection is working

1 Freezing protection (Cooling mode)

The unit is in six-minute resume prevention mode if pipe <liquid or condenser/ evaporator> temperature stays under

-15:[5˚F] for three minutes after the compressor started. Abnormal if it stays under -15:[5˚F] for three minutes again within 16 minutes after six-minute resume prevention mode.

2 Overheating protection (Heating mode)

The units is in six-minute resume prevention mode if pipe <Liquid or condenser / evaporator> temperature is detected as over 70:[158˚F] after the compressor started. Abnormal if the temperature of over 70:[158˚F] is detected again within 10 minutes after six-minute resume prevention mode.

Cause

(Cooling or drying mode) 1 Clogged filter (reduced airflow) 2 Short cycle of air path 3 Low-load (low temperature)

operation beyond the tolerance range

4 Defective indoor fan motor

• Fan motor is defective.

• Indoor controller board is

defective.

5 Defective outdoor fan control 6 Overcharge of refrigerant 7 Defective refrigerant circuit

(clogs)

(Heating mode) 1 Clogged filter (reduced airflow) 2 Short cycle of air path 3 Over-load (high temperature)

operation beyond the tolerance range

4 Defective indoor fan motor

• Fan motor is defective.

• Indoor controller board is

defective.

Countermeasure

(Cooling or drying mode) 1 Check clogging of the filter. 2 Remove shields.

4 Refer to 12-8. DC Fan motor (FAN MOTOR/

INDOOR CONTROLLER BOARD)

5 Check outdoor fan motor. 67 Check operating condition of refrigerant circuit.

(Heating mode) 1 Check clogs of the filter. 2 Remove shields.

4 Refer to 12-8. DC Fan motor (FAN MOTOR/

INDOOR CONTROLLER BOARD)

P8

Pipe temperature

<Cooling mode> Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes after compressor start and 6 minutes after the liquid or condenser/evaporator pipe is out of cooling range. Note 1) It takes at least 9 minutes. to

detect.

Note 2) Abnormality P8 is not detected in

drying mode.

Cooling range :

-3 deg˚C(-5.4deg˚F) ] (TH-TH1)

TH: Lower temperature between: liquid

pipe temperature (TH2) and condenser/evaporator temperature (TH5)

TH1: Intake temperature

<Heating mode> When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished, the unit is detected as abnormal when condenser/ evaporator pipe temperature is not in heating range within 20 minutes.

5 Defective outdoor fan control 6 Overcharge of refrigerant 7 Defective refrigerant circuit

(clogs)

8 Bypass circuit of outdoor unit is

defective.

1 Slight temperature difference

between indoor room temperature and pipe <liquid or condenser / evaporator> temperature thermistor

• Shortage of refrigerant

• Disconnected holder of pipe <liquid or condenser /

evaporator> thermistor

• Defective refrigerant circuit

2 Converse connection of extension pipe (on plural units

connection) 3 Converse wiring of indoor/ outdoor unit connecting wire

(on plural units connection) 4 Defective detection of indoor

room temperature and pipe

<condenser / evaporator> temperature thermistor 5 Stop valve is not opened completely.

5 Check outdoor fan motor. 6~8Check operating condition of refrigerant circuit.

1~4 Check pipe <liquid or condenser /

evaporator> temperature with room temperature display on remote

controller and outdoor controller circuit

board. Conduct temperature check with outdoor controller circuit board after connecting

( )

‘A-Control Service Tool(PAC-SK52ST)’.

23Check converse connection of extension pipe or converse wiring of indoor/outdoor unit connecting wire.

Note 3) It takes at least 27 minutes to

detect abnormality.

Note 4) It excludes the period of defrosting

(Detection restarts when defrosting mode is over)

Heating range :

3 deg˚C(5.4deg˚F) [ (TH5-TH1)

32

Error Code

P9

Abnormal point and detection method

Abnormality of pipe temperature thermistor / Condenser-Evaporator (TH5)

1 The unit is in three-minute resume pro-

tection mode if short/open of thermistor is detected. Abnormal if the unit does not get back to normal within three minutes. (The unit returns to normal operation, if it has normally reset.)

2 Constantly detected during cooling, dry-

ing, and heating operation (except defrosting)

Short: 90˚C[194˚F] or more Open: -40˚C[-40˚F] or less

Cause

1 Defective thermistor characteristics 2 Contact failure of connector

(CN44) on the indoor controller

board (Insert failure) 3 Breaking of wire or contact failure of thermistor wiring 4 Temperature of thermistor is

90:[194˚F] or more or

-40˚C[-40˚F] or less caused by

defective refrigerant circuit. 5 Defective indoor controller

board

Countermeasure

1–3 Check resistance value of thermistor. For characteristics, refer to (P1) above. 2 Check contact failure of connector (CN44)

on the indoor controller board. Refer to 12-5. Turn the power on and check restart after

inserting connector again. 4 Operate in test run mode and check pipe

<condenser / evaporator> temperature. If pipe <condenser / evaporator> tempera-

ture is extremely low (in cooling mode) or

high (in heating mode), refrigerant circuit

may have defect. 5 When no problems are found in 1-4 above,

replace the indoor unit control board.

E0

or

E4

E3

or

E5

Remote controller transmission error(E0)/signal receiving error(E4)

1 Abnormal if main or sub remote controller

can not receive normally any transmission from indoor unit of refrigerant

address “0” for three minutes. (Error code : E0) 2 Abnormal if sub remote controller could

not receive for any signal for two min-

utes. (Error code: E0)

1 Abnormal if indoor controller board can

not receive normally any data from

remote controller board or from other

indoor controller board for three minutes.

(Error code: E4) 2 Indoor controller board cannot receive

any signal from remote controller for two

minutes. (Error code: E4)

Remote controller transmission error(E3)/signal receiving error(E5)

1 Abnormal if remote controller could not

find blank of transmission path for six

seconds and could not transmit. (Error code: E3)

2 Remote controller receives transmitted

data at the same time, compares the

data, and when detecting it, judges different data to be abnormal 30 continuous times. (Error code: E3)

1 Abnormal if indoor controller board could

not find blank of transmission path. (Error code: E5)

2 Indoor controller board receives trans-

mitted data at the same time, compares

the data,and when detecting it, judges

different data to be abnormal 30 continuous times. (Error code: E5)

1 Contact failure at transmission

wire of remote controller

2 All remote controllers are set

as “sub” remote controller. In this case, E0 is displayed on remote controller, and E4 is displayed at LED (LED1, LED2) on the outdoor controller circuit

board. 3 Mis-wiring of remote controller 4 Defective transmitting receiving

circuit of remote controller 5 Defective transmitting receiving

circuit of indoor controller board

of refrigerant address “0” 6 Noise has entered into the

transmission wire of remote

controller.

1 Two remote controller are set

as “main.” (In case of 2 remote con trollers) 2 Remote controller is connected

with two indoor units or more. 3 Repetition of refrigerant

address 4 Defective transmitting receiving

circuit of remote controller 5 Defective transmitting receiving

circuit of indoor controller

board 6 Noise has entered into trans-

mission wire of remote control-

ler.

1 Check disconnection or looseness of indoor

unit or transmission wire of remote controller. 2 Set one of the remote controllers “main”. If there is no problem with the action above. 3 Check wiring of remote controller.

• Total wiring length: max.500m

(Do not use cable 5 3 or more)

• The number of connecting indoor units: max.16units

• The number of connecting remote controller: max.2units

When it is not the above-mentioned problem of 1~3

4 Diagnose remote controllers.

a) When “RC OK” is displayed,

Remote controllers have no problem. Turn the power off, and on again to check. If abnormality generates again, replace indoor controller board.

b) When “RC NG” is displayed,

Replace remote controller. c) When “RC E3” is displayed, d) When “ERC 00-06” is displayed, [ c),d)→Noise may be causing abnormality. ]

∗ If the unit is not normal after replacing

indoor controller board in group control, indoor controller board of address “0” may be abnormal.

1 Set a remote controller to main, and the

other to sub.

2 Remote controller is connected with only one

indoor unit.

3 The address changes to a separate setting.

4~6 Diagnose remote controller.

a) When “RC OK”is displayed, remote con-

trollers have no problem. Turn the power off,and on again to check. When becoming abnormal again, replace

indoor controller board. b) When “RC NG”is displayed, replace

remote controller. c) When “RC E3”or “ERC 00-66”is dis-

played, noise may be causing abnormali-

ty.

33

Error Code

E6

Abnormal point and detection method

Indoor/outdoor unit communication error (Signal receiving error)

1 Abnormal if indoor controller board cannot receive any signal normally for

six minutes after turning the power on. 2 Abnormal if indoor controller board cannot receive any signal normally for

three minutes. 3 Consider the unit as abnormal under the

following condition: When two or more

indoor units are connected to an outdoor unit, indoor controller board cannot receive a signal for three minutes

from outdoor controller circuit board, a

signal which allows outdoor controller

circuit board to transmit signals.

Cause

1 Contact failure, short circuit or,

mis-wiring (converse wiring) of indoor/outdoor unit connecting wire

2 Defective transmitting receiving

circuit of indoor controller board

3 Defective transmitting receiving

circuit of indoor controller board

4 Noise has entered into indoor/

outdoor unit connecting wire.

Countermeasure

∗ Check LED display on the outdoor control cir-

cuit board. (Connect A-control service

tool, PAC-SK52ST.) Refer to EA-EC item if LED displays EA-EC. 1 Check disconnection or looseness of indoor/

outdoor unit connecting wire of indoor unit or

outdoor unit. Check all the units in case of twin triple indoor unit system. 2-4 Turn the power off, and on again to check.

If abnormality generates again, replace

indoor controller board or outdoor controller circuit board. ∗ Other indoor controller board may have defect in case of twin triple indoor unit system.

E7

Fb

Indoor/outdoor unit communication error (Transmitting error)

Abnormal if “1” receiving is detected 30 times continuously though indoor controller board has transmitted “0”.

Indoor controller board

Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board.

Remote controller control board

1 Abnormal if data cannot be read normal-

ly from the nonvolatile memory of the remote controller control board.

(Error code: E1)

2 Abnormal if the clock function of remote

controller cannot be operated normally.

(Error code: E2)

1 Defective transmitting receiving

circuit of indoor controller board

2 Noise has entered into power

supply.

3 Noise has entered into outdoor

control wire.

1 Defective indoor controller

board

1 Defective remote controller 1 Replace remote controller.

1-3 Turn the power off, and on again to check.

If abnormality generates again, replace

indoor controller board.

1 Replace indoor controller board.

E1

or

E2

34

12-4. Troubleshooting by inferior phenomena

Phenomena (1)LED2 on indoor controller board is off.

• When LED1 on indoor controller board is also off. 1 Power supply of rated voltage is not supplied to out-

door unit.

2 Defective outdoor controller circuit board

3 Power supply of 208~230V is not supplied to indoor

unit.

4 Defective indoor controller board

Cause

Note: Refer to the manual of outdoor unit for the detail of remote controller.

Countermeasure

1 Check the voltage of outdoor power supply terminal block (L, N) or (L3, N).

• When AC 208~230V is not detected. Check the power wiring to outdoor unit and the breaker.

• When AC 208~230V is detected.

—Check 2 (below). 2 Check the voltage between outdoor terminal block S1 and S2.

• When AC 208~230V is not detected.

Check the fuse on outdoor controller

circuit board.

Check the wiring connection.

• When AC 208~230V is detected.

—Check 3 (below). 3 Check the voltage between indoor terminal

block S1 and S2.

• When AC 208~230V is not detected. Check indoor/outdoor unit connecting wire for mis-wiring.

• When AC 208~230V is detected.

—Check 4 (below). 4 Check the fuse on indoor controller board. Check the wiring connection. If no problem are found, indoor controller

board is defective.

(2)LED2 on indoor controller board is blinking.

• When LED1 on indoor controller board is also blinking. Connection failure of indoor/outdoor unit connecting wire

• When LED1 is lit. 1 Mis-wiring of remote controller wires

Under twin triple indoor unit system, 2 or more indoor

units are wired together.

2 Refrigerant address for outdoor unit is wrong or not

set. Under grouping control system, there are some units whose refrigerant address is 0.

3 Short-cut of remote controller wires 4 Defective remote controller

Check indoor/outdoor unit connecting wire for connection failure.

1 Check the connection of remote con troller wires in case of twin triple indoor unit system. When 2 or more indoor units are wired in one refrigerant system, connect remote controller wires to one of

those units.

2 Check the setting of refrigerant address in

case of grouping control system. If there are some units whose refrigerant addresses are 0 in one group, set one of the units to 0 using SW1 (3-6) on outdoor controller circuit board. 34 Remove remote controller wires and check LED2 on indoor controller board.

• When LED2 is blinking, check the short-cut of remote controller wires.

• When LED2 is lit, connect remote

controller wires again and: if LED2 is blinking, remote controller is defective; if LED2 is lit, connection failure of remote controller terminal block etc. has returned to normal.

35

12-5. Test point diagram

12-5-1. Power supply board

PVA-A12AA7 PVA-A30AA7 PVA-A18AA7 PVA-A36AA7 PVA-A24AA7 PVA-A42AA7

CND

CND Power supply voltage (208 - 230VAC)

CNMF Fan motor output

1 - 4: 310 - 340 VDC 5 - 4: 15 VDC 6 - 4: 0 - 6.5 VDC 7 - 4: Stop 0 or 15 VDC Run 7.5 VDC

(0 - 15 pulse)

CNXA1

Connect to the indoor controller board

CNXB1

Connect to the indoor controller board

CNXC1

Connect to the indoor controller board

CNXA2

Connect to the indoor power board

CNXB2

Connect to the indoor power board

CNXC2

Connect to the indoor power board

(*1)

PC51

(*1)

C53

(*1)

C25

(*1)

CNXB1 CNXC1 CNXA1 CNMF

V

Voltage on the (-) side of PC51 and

FG

C25 (Same with the voltage between 7 (+) and 4 (-) of CNMF)

V

Voltage between the C25 pins 15

CC

VDC (Same with the voltage between 5 (+) and 4 (-) of CNMF)

V

Voltage between the C53 pins

sp

0VDC (with the fan stopped) 1 - 6.5VDC (with the fan in operation) (Same with the voltage between 6 (+) and 4 (-) of CNMF)

36

12-5-2. Indoor controller board

PVA-A12AA7 PVA-A30AA7 PVA-A18AA7 PVA-A36AA7 PVA-A24AA7 PVA-A42AA7

SWE Emergency oper ation

SW1 Model selection

SW2 Capacity setting

CN25

CNER

CN41

CN32

SWE

SW1 SW2

CN22CN105

CNXA2

CNXC2

CNXB2

CN51

CN24-2

CN2C

CN24-1

CN20

CN4F

CN44

CN105 Radio frequency interf ace

CN32 Remote star t/stop adapter

CN22 F

CN51 Centr alized control

CN41 J AMA standard HA ter minal A

CN44 Ther mistor

CN4F Float sensor

CN20 Ther mistor (Inlet temper ature)

CN24-1

CN24-2

CN4Y F or fan control

CN3C Indoor-outdoor transmission

CN90 Wireless remote controller

or MA remote controller cab le connection (10 - 13 VDC)

(liquid/condenser/e vaporator temperature)

1st Heater control (12VDC)

2nd Heater control

(0 - 24VDC)

CN3C

CN4Y

CN90

CNF

CNXA2

Connect to the indoor controller board

CNXB2

Connect to the indoor controller board

CNX

C2

Connect to the indoor controller board

CNXA1

Connect to the indoor po wer board

CNXB1

Connect to the indoor po wer board

CNXC1

Connect to the indoor po wer board

CNER

ER V controll

CN2C

ER V input

CN25

Humidity conrol

CNF

Humidity input

37

12-6. Trouble criterion of main parts PVA-A12AA7 PVA-A30AA7 PVA-A18AA7 PVA-A36AA7 PVA-A24AA7 PVA-A42AA7

Part name

Room temperature thermistor (TH1)

Pipe temperature thermistor/liquid (TH2)

Condenser/evaporator temperature thermistor (TH5)

Wiring diagram

Check method and criterion

Measure the resistance with a tester. (Part temperature 10C (50F) ~ 30C (86F))

Normal

4.3k~9.6k

Vm (Power supply for motor)

Vcc (Power supply for control)

Regulator Hall IC

Vsp (Speed command voltage)

PG (Pulse output for rotation)

Abnormal

Opened or short-circuited

Motor

Board with build-in motor

Power device

Pre

driver

Motor winding

12-7. Thermistor

Thermistor for lower temperature

Thermistor R0 = 15 k" ± 3% Fixed number of B = 3480 k" ± 2%

Rt = 15exp { 3480( ) }

0°C (32°F) 15 k" 10°C (50°F) 9.6 k" 20°C (68°F) 6.3 k" 25°C (77°F) 5.2 k" 30°C (86°F) 4.3 k" 40°C (104°F) 3.0 k"

Room temperature thermistor (TH1) Pipe temperature thermistor (TH2) Condenser/evaporator temperature thermistor (TH5)

1

273+t

1

273

GND

Current detecting resistor

< Thermistor for lower temperature >

50

40

30

20

Resistance (K")

10

0

-20 -10 01020304050

-4 14 32 50 68 86 104 122

Temperature

(˚C)

˚F

38

12-8. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD)

12-8. DC FAN MOTOR (FAN MOTOR/INDOOR CONTROLLER BOARD)

Check method of DC fan motor (fan motor/indoor controller circuit board)

Notes

1

· High voltage is applied to the connecter (CNMF) for the fan motor. Give attention to the service.

· Do not pull out the connector (CNMF) for the motor with the power supply on. (It causes trouble of the indoor controller circuit Self check

2

Symptom : The indoor fan cannot turn around.

Check the fuse (FUSE) on indoor controller board.

board and fan motor.)

Did the fuse blow?

No

Wiring contact check

Contact of fan motor connector (CNMF)

Yes

Check the drain pump (DP) Is the resistance between terminals normal?

No

Replace drain pump (DP).

Is there no contact failure?

Yes

Power supply check (Remove the connector (CNMF))

Measure the voltage in the indoor controller circuit

TEST POINT

1 : VDC (between 1 (+) and 4 (-) of the fan connector): VDC DC310~340V

No

Wiring recovery

board.

TEST POINT 2 : VCC (between 5 (+) and 4 (-) of the fan connector): VCC DC15V

Is the voltage normal?

No

Replace indoor

controller board.

Check the operation.

NG

Replace the fan motor.

Yes

OK

END

Measure the resistance of the fan motor.

Is the resistance of the fan motor

normal?(Refer to below table)

Yes

Does the fan motor rotate smoothly?

Yes

Turn OFF the power supply and connect the connector CNMF. Turn ON the power supply and measure the voltage of connector CNMF while rotaing the motor by the hand.

No

Yes

Replace indoor controller board (I.B). Replace fan motor (MF).

Does the voltage between pin 7 and pin 4

PVA-A12,18,24,30AA7

of connector CNMF repeat 0V and 5V?

Yes

Check the operation of fan.

NG

OK

END

Replace indoor controller board.

PVA-A36,42AA7

No

Replace the fan motor.

Yes

Check the operation of fan.

NG

OK

Replace indoor controller board.

END

Measuring points Resistance

pin 1 - pin 4

pin 3 - pin 4 50kΩ

pin 6 - pin 4 150kΩ

pin 7 - pin 4

*To measure the resistance, connect the negative (-) end of the tester to pin 4.

O.L.

1MΩ

47kΩ

143kΩ

O.L.

39

12-9. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE

Each function is controlled by the dip switch and the jumper wire on control p.c. board. SW1 and SW2 are equipped only for service parts. Model setting and capacity setting are memorized in the nonvolatile memory of the control p.c. board of the unit.

12-9. Functions of dip switch and jumper wire

Model

1 2 3 4 5

ON

OFF

1 2 3 4 5

ON

OFF

1 2 3 4 5

ON

OFF

1 2 3 4 5

ON

OFF

1 2 3 4 5

ON

OFF

1 2 3 4 5

ON

OFF

Service Board

Each function is controlled by the dip switch and the jumper wire on control p.c. board. SW1 and SW2 are equipped only for service parts. Model setting and capacity setting are memorized in the nonvolatile memory of the control p.c. board of the unit.

Jumper wire

Functions

Setting by the dip switch and jumper wire

For service board

SW1

Model settings

1 234 5

ON

OFF

(Marks in the table below) Jumper wire ( : Short : Open)

Remarks

SW2

J41 J42

JP1

JP3

Capacity settings

Pair number setting with wireless remote controller

Unit type setting

Indoor controller board type setting

MODELS

PVA-A12AA7

Service board

1 2 3 4 5

PVA-A18AA7

PVA-A30AA4

PVA-A24AA7

PVA-A36AA4

PVA-A30AA7

PVA-A36AA7

1 2 3 4 5

PVA-A42AA4

PVA-A42AA7

Wireless remote

controller setting

0 1 2

3 ~ 9

Model

Without TH5

With TH5

Indoor controller board type

Factory shipment

Service parts

Control PCB setting

J41 J42

JP1

ON OFF

<Settings at time of factory shipment> Wireless remote controller: 0 Control PCB: (for both J41 and J42) Four pair number settings are supported. The pair number settings of the wireless remote controller and indoor control PCB (J41/J42) are given in the table on the left. (' ' in the table indicates the jumper line is disconnected.)

There is no jumper (JP1) because these models have the cond./eva. temperature thermistor (TH5).

JP3

40

13

DISASSEMBLY PROCEDURE

13-1. Control box

Exercise caution when removing heavy parts.

1. Remove the Electric panel (2 screws)

Fig. 1

41

13-2. Thermistor (Return Air)

A

B

C

D

E

F

G

H

I

16151413121110

987654321

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

ED

CBA

ITEM MODEL NAME

Exercise caution when removing heavy parts.

1. Remove the Filter panel (2 thumbscrews).

2. Remove the Blower panel (2 screws).

3. Remove the cover over the Return Air thermistor box and unplug the thermistor.

4. Pull out the thermistor holder and thermistor inside the box.

Fig. 3

Fig. 4

42

13-3. Coil Assembly

A

B

C

D

E

F

G

H

I

16151413121110

987654321

COMMERCIAL TOLERANCE

WORK GRADE

CASTING

FINE COARSE

PRESS WORKING

ED

CBA

ITEM MODEL NAME

The parts are required to meet the latest RoHS directive.

DETAIL A

DETAIL B

987654321

The parts are required to meet the latest RoHS directive.

Exercise caution when removing heavy parts.

1. Remove the Electrical, Blower and Filter panel indicated in sections 1 and 2.

2. Remove the Coil panel by removing all of the screws securing it to the (3) smaller panels for refrigerant and drain lines.

3. Slide the smaller panels in the directions indicated and remove.

Fig. 5

4 Remove the (1 or 2) brackets that secure the coil, unplug the thermistors from the control board and route the wires out of the control box area and into the coil section. Next, slide the coil from the frame.

Fig. 6

Fig. 7

Fig. 8

43

5. Remove the plate covering the coil assembly to access the thermistors.

6. Remove lower and side drain pan.

Fig. 9

Fig. 10

44

13-4. Blower/Fan Assembly

Exercise caution when removing heavy parts.

1. Remove the Blower and Filter panel (along with filter if installed) indicated in section 2.

2. Remove the (1 or 2) brackets that secure the coil assembly.

3. Remove the door that covers the small enclosure attached to the fan assembly (Fig.12). Unplug the motor and route the wire harness out of the enclosure.

4. Remove the (2) screws that secure the fan assembly and slide out.

Fig. 11

Fig. 12

45

This product is designed and intended for use in the residential,

commercial and light-industrial environment.

Please be sure to put the contact address/telephone number on

this manual before handing it to the customer.

MITSUBISHI ELECTRIC US, INC.

MEUS DOC# MD-1404-K011, December 2016

www.mitsubishielectric-usa.com

Toll Free: 800-433-4822

Mitsubishi PVA-A30AA7 / PUZ-HA30NHA5 / MHK2 Indoor Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

SAFETY PRECAUTION1

1-1. Always observe for safety

1-2. Cautions related to new refrigerant

PART NAMES AND FUNCTIONS2

SPECIFICATION3

FAN PERFORMANCE AND CORRECTED AIR FLOW4

PVA-A12AA7

PVA-A18AA7

PVA-A24AA7

PVA-A30AA7

PVA-A36AA7

PVA-A42AA7

SOUND PRESSURE LEVELS5

5-1. Sound pressure level

5-2. NC curves

6 OUTLINES & DIMENSIONS

7 WIRING DIAGRAM

8 REFRIGERANT SYSTEM DIAGRAM

9 HEATER CONTROL

9-1. Control Specifications And Function Setting

9-2. Fan control

9-3. CN24RELAY-KIT-CM3 (Optional Parts) installation

HUMIDIFIER CONTROL

ERV (ENERGY RECOVERY VENTILATION) CONTROL

11-1. Control Specifications

11-2. Installation

TROUBLESHOOTING

12-1. Cautions on troubleshooting

12-2. Self-check function

12-3. Self-diagnosis action table

12-4. Troubleshooting by inferior phenomena

12-5. Test point diagram

12-6. Trouble criterion of main parts PVA-A12AA7 PVA-A30AA7 PVA-A18AA7 PVA-A36AA7 PVA-A24AA7 PVA-A42AA7

12-7. Thermistor

12-8. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD)

12-9. Functions of dip switch and jumper wire

DISASSEMBLY PROCEDURE

13-1. Control box

13-2. Thermistor (Return Air)

13-3. Coil Assembly

13-4. Blower/Fan Assembly