Mitsubishi Electric Mr.Slim PEA-A12AA4 Operating manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. PART NAMES AND FUNCTIONS ········2
2. SPECIFICATIONS·································3
3. OUTLINES AND DIMENSIONS············8
4. WIRING DIAGRAM ·······························9
5.
REFRIGERANT SYSTEM DIAGRAM ·······10
6. HEATER CONTROL ···························11
7. TROUBLESHOOTING·························14
8. DISASSEMBLY PROCEDURE ···········25
INDOOR UNIT
CM
I
N
T
E
R
T
E
K
L
I
S
T
E
D
Indoor unit
[Model names]
PEA-A12AA4
PEA-A18AA4
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Model name
indication
No.HWE0807B
REVISED EDITION-B
December 2010

2
1PART NAMES AND FUNCTIONS
Indoor Unit
PEA-A12AA4
PEA-A18AA4
Air outlet duct flange
Air outlet
Air inlet

3
2SPECIFICATIONS
BTU/h
kW
A
˚F(˚C)
Fan
in.WG(Pa)
kW
m3/min
CFM
L/S
mm
In.
kg
in.(mm)
A
Liquid in.(mm)
Gas in.(mm)
in.(mm)
dB<A>
Net weight
R410A
Motor output
Airflow rate(Low-Mid-High)
Airflow rate(Low-Mid-High)
Airflow rate(Low-Mid-High)
Motor type
External finish
Wiring
Capacity
Model Name
Power source
Remark
Document
Standard
attachment
Power input
Current
Type x Quantity
Airflow direction
Temperature set range Remote controller
Varistor
External static press
Driving mechanism
External dimension
Drain piping diameter
H x W x D
<Cooling> Indoor: 80˚FD.B. / 67˚FW.B. (26.7˚CD.B. / 19.4˚CW.B.) Outdoor:95˚FD.B. (35˚CD.B. )
Insulation material
Air filter
Refrigerant control device
Protection devices
Note
Pipe length: 24-9/16ft (7.5m) Height difference: 0ft (0m)
2.Power consumption. Run current at 0.060[in.WG] (15Pa) (external static pressure)
3.Cooling capacity value at 1:1system
Heating capacity value at 1:1system
<Heating> Indoor:70˚FD.B. (21.1˚CD.B.) Outdoor:47˚FD.B. / 43˚FW.B. (8.3˚CD.B. / 6.1˚CW.B.)
1.Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Refrigerant
piping diameter R410A
Sound level (Low-Mid-High)
(measured in anechoic room)
Heat exchanger
Terminal block
Power outlet A
Accessory
Min.size of wire
Amperage of wire breaker
Cooling
12000
0.07
0.57
67 to 86 (19 to 30)
Heating
-
-
-
-
208/230V (60Hz)
-
Sirocco fan x 2
0.02-0.06-0.14-0.20 (5-15-35-50)
DC brushless motor
0.096
Direct-driven
7.0-9.0-11.0
247-317-388
116-150-183
Galvanized
200 x 990 x 700
7-7/8 x 39 x 27-9/16
22
1/8 (1.6)
15
ø1/4 (ø6.35) Flare
ø1/2 (ø12.7) Flare
O.D. 1-1/4 (32)
23-28-33
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
10
Installation Manual, Instruction Book
Drain hose (flexible joint)
PEA-A12AA4
Cooling
18000
0.09
0.74
67 to 86 (19 to 30)
Heating
19000
0.07
0.63
63 to 83 (17 to 28)
208/230V (60Hz)
-
Sirocco fan x 4
0.02-0.06-0.14-0.20 (5-15-35-50)
DC brushless motor
0.096
Direct-driven
12.0-15.0-18.0
423-529-635
200-250-300
Galvanized
200 x 1190 x 700
7-7/8 x 46-7/8 x 27-9/16
28
1/8 (1.6)
15
ø1/4 (ø6.35) Flare
ø1/2 (ø12.7) Flare
O.D. 1-1/4 (32)
30-34-38
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
20
Installation Manual, Instruction Book
Drain hose (flexible joint)
PEA-A18AA4

4
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PEA-A12AA4
External static pressure :
0.060[in.WG](15Pa)
High
Middle
33
SPL(dB)
28
Low 23
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PEA-A12AA4
External static pressure :
0.020[in.WG](5Pa)
High
Middle
33
SPL(dB)
28
Low 23
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PEA-A12AA4
External static pressure :
0.200[in.WG](50Pa)
High
Middle
35
SPL(dB)
31
Low 25
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PEA-A12AA4
External static pressure :
0.140[in.WG](35Pa)
High
Middle
34
SPL(dB)
29
Low 24
LINE
<60Hz>
NOTCH
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes. The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.
SOUND CRITERION CURVES

5
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PEA-A18AA4
External static pressure :
0.060[in.WG](15Pa)
High
Middle
38
SPL(dB)
34
Low 30
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PEA-A18AA4
External static pressure :
0.020[in.WG](5Pa)
High
Middle
37
SPL(dB)
33
Low 29
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PEA-A18AA4
External static pressure :
0.200[in.WG](50Pa)
High
Middle
39
SPL(dB)
36
Low 32
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)
BAND CENTER FREQUENCIES, Hz
PEA-A18AA4
External static pressure :
0.140[in.WG](35Pa)
High
Middle
39
SPL(dB)
35
Low 31
LINE
<60Hz>
NOTCH
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes. The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.

6
External static pressure [in.WG](Pa)
PEA-A12AA4
(External static pressure 0.060[in.WG](15Pa) 208/230V 60Hz
Airflow rate(m3/min)[CFM]
0
10
20
30
40
50
6789101112
[0.20]
[0.16]
[0.12]
[0.08]
[0.04]
[212] [247] [282] [318] [353] [388] [424]
Middle
Low
High
Limit
Rated point
0
40
30
20
10
[0.16]
[0.12]
[0.08]
[0.04]
External static pressure [in.WG](Pa)
6789101112
[212] [247] [282] [318] [353] [388] [424]
Airflow rate(m3/min)[CFM]
PEA-A12AA4
(External static pressure 0.020[in.WG](5Pa) 208/230V 60Hz
Middle
Low
High
Limit
Rated point
0
20
10
30
40
50
60
70
80
External static pressure [in.WG](Pa)
Airflow rate(m3/min)[CFM]
PEA-A12AA4
(External static pressure 0.200[in.WG](50Pa) 208/230V 60Hz
6789101112
[0.32]
[0.28]
[0.24]
[0.20]
[0.16]
[0.12]
[0.08]
[0.04]
[212] [247] [282] [318] [353] [388] [424]
Middle
Low
High
Limit
Rated point
0
20
10
30
40
50
60
70
80
External static pressure [in.WG](Pa)
PEA-A12AA4
(External static pressure 0.140[in.WG](35Pa) 208/230V 60Hz
6789101112
Airflow rate(m3/min)[CFM]
[0.32]
[0.28]
[0.24]
[0.20]
[0.16]
[0.12]
[0.08]
[0.04]
[212] [247] [282] [318] [353] [388] [424]
Middle
Low
High
Limit
Rated point
INDOOR FAN PERFORMANCE AND CORRECTED AIR FLOW

7
External static pressure [in.WG](Pa)
PEA-A18AA4
(External static pressure 0.060[in.WG](15Pa) 208/230V 60Hz
Airflow rate(m3/min)[CFM]
9 10111213141516171819
0
50
40
30
20
10
[0.20]
[0.16]
[0.12]
[0.08]
[0.04]
[318] [353] [388] [424] [494][459] [530] [565] [600] [671][636]
Middle
Low
High
Limit
Rated point
External static pressure [in.WG](Pa)
PEA-A18AA4
(External static pressure 0.020[in.WG](5Pa) 208/230V 60Hz
Airflow rate(m3/min)[CFM]
9 10111213141516171819
0
40
30
20
10 Middle
Low
High
Limit
Rated point
[0.16]
[0.12]
[0.08]
[0.04]
[318] [353] [388] [424] [494][459] [530] [565] [600] [671][636]
External static pressure [in.WG](Pa)
PEA-A18AA4
(External static pressure 0.200[in.WG](50Pa) 208/230V 60Hz
Airflow rate(m3/min)[CFM]
9 10111213141516171819
0
10
20
30
40
60
70
50
80
[0.32]
[0.28]
[0.24]
[0.20]
[0.16]
[0.12]
[0.08]
[0.04]
[318] [353] [388] [424] [494][459] [530] [565] [600] [671][636]
Middle
Limit
Rated point
Low
High
External static pressure [in.WG](Pa)
PEA-A18AA4
(External static pressure 0.140[in.WG](35Pa) 208/230V 60Hz
Airflow rate(m3/min)[CFM]
9 10111213141516171819
0
10
20
30
40
60
70
50
80
[0.32]
[0.28]
[0.24]
[0.20]
[0.16]
[0.12]
[0.08]
[0.04]
[318] [353] [388] [424] [494][459] [530] [565] [600] [671][636]
Middle
Limit
Rated point
Low
High

8
OUTLINES AND DIMENSIONS
3
Unit : mm(in.)
PEA-A12AA4
PEA-A18AA4
(46-7/8)
1190
(39)
990
N
(48-25/32)
1239
(40-29/32)
1039
M
ø12.7(1/2)
mm(in.)
(35-7/16)
(27-9/16)
(41-3/4)
(33-7/8)
(47-1/4)
(39-3/8)
(39-3/8)
(31-1/2)
(41-3/4)
(33-7/8)
(47-3/16)
(39-5/16)
(45-3/8)
(37-1/2)
(43-5/16)
(35-7/16)
ø6.35(1/4)
900 952 998 860 9800 1000 860 7700 20
24
L
900
K
9
J
1060
HG
1200
F
1000
E
11
D
1060
C
1100
B
1152
PEA-A12AA4
PEA-A18AA4
Model A
1198
Gas pipe Liquid pipe
12
Note1.Use M10 screw for the suspension bolt (field supply).
2.Keep the service space for the maintenance at the bottom.
3.This chart indicates for PEA-A12AA4 model,which has 2 fans.
PEA-A18AA4 models have 4 fans.
4.In case an inlet duct is used,remove the air filter(supply with
the unit), then install the filter(field supply) at suction side.
Drain pipe(O.D.ø32(1-1/4))
Terminal block (Remote controller transmission line)
Terminal block (Indoor/outdoor connecting line)
Refrigerant piping
flare connection (liquid)
Drain pipe(O.D.ø32(1-1/4))
(Emergency draining)
Knockout hole ø 27(1-3/32)
(Remote controller transmission line)
Knockout hole
ø 27(1-3/32)
(Indoor/outdoor connecting line)
L-ø2.9(1/8)
2X2-ø2.9(1/8)
2XE-ø2.9(1/8)
Control box
Air filter
Suspension bolt hole
4-14X30(9/16X1-3/16) Slot
Refrigerant piping
flare connection (gas)
Drain pipe(O.D.ø32(1-1/4))
(Spontaneous draining)
Air
inlet
Air
outlet
N
M
57(2-1/4)
57(2-1/4)
159(6-9/32)
345(13-19/32)
(3-9/16)
(5-29/32)
(2-25/32)(4-19/32)
70
10 (13/32)
(3-15/16)
(1-15/16) (24-5/8)
37(1-15/32)
200(7-7/8)
H
20(13/16)
157.5 (6-7/32)
20 (13/16)
100 (3-15/16)
37(1-15/32)
12(1/2)
12(1/2)
88(3-15/32)
100(3-15/16)XJ=K
100(3-15/16)
88(3-15/32)
10 (13/32)
49
25(1)
170(6-23/32)
102(4-1/32)
270(10-21/32)
116
150(Duct)
23(29/32)
100 25(1)
700(27-9/16)
677(26-21/32)
23 (29/32)
C
B (Suspension bolt pitch)23(29/32)
A
90
625 (Suspension bolt pitch)
D (Duct)
30(1-3/16) 100(3-15/16)X(E-1)=F
100(3-15/16)
20(13/16)
15(19/32)
(1-31/32 ~ 5-29/32)
(30-19/32)
(17-23/32)
(11-13/16)
(17-23/32)
More than 300
450
777
50(1-31/32)
50 ~ 150
50(1-31/32)
G450
Note2
Access door
Required space for service and maintenance
More than 20
More than 10
(13/16)
(13/32)
Access door
Ceiling surface
Make the access door at the appointed position
properly for service maintenance.
175±5(6-29/32±7/32)
Less than 300
Less than 550
(11-13/16)
(21-21/32)
Drain hose (I.D.ø32(1-1/4))
<accessory>
(Actual length)
2
1

9
4WIRING DIAGRAM
PEA-A12AA4
PEA-A18AA4
12
1~
M
ON
OFF
SW6
DC294-340V
RECTIFY CIRCUIT
RU
SW1
BZ1
SW2
LED1
CN1
W.B.
RFI
R.B.
12
X1
FUSE
DRAINPUMP
135
(BLACK)
CN01
CNP
INSIDE SECTION OF CONTROL BOX
(BLUE)
CN22
31
1
LED1
CN3C
SW2SW1 CN32
CN30(GREEN)
(RED)
CN20
CN41
SWE
ON OFF
CN51
(BLUE)
1474
59
95
2
12
41
FS TH2 TH5 TH1
FAN MOTOR
TB15
12
(RED)
CN105
(RED)
CN4F
(WHITE)
CN90
(WHITE)
CN44
(WHITE)
CNMF
(WHITE)
12
CN2L
TB6
(BLUE)
LED3
3
LED2
I. B.
S1
TB4
S3
S2
1
1
1
19
TRANSMISSION
WIRES DC 12V
-
+
MS
3~
SW2
SWITCH (HEATING ON/OFF)
SWITCH (COOLING ON/OFF)
SW1
RECEIVING UNIT RU
LED (RUN INDICATOR) LED1
BUZZER BZ1
IR WIRELESS REMOTE CONTROLLER BOARD
COND./EVA. TEMP. THERMISTOR TH5
PIPE TEMP. THERMISTOR/LIQUID TH2
INTAKE AIR TEMP. THERMISTOR TH1
CONNECTOR (EMERGENCY OPERATION)
SWITCH (FOR CAPACITY CODE)
SWITCH (FOR MODE SELECTION)
SWITCH (FOR MODEL SELECTION)
SWE
CONNECTOR (REMOTE SWITCH)
CONNECTOR (LLC)
CONNECTOR (LOSSNAY)
CONNECTOR (BACK-UP HEATING)
NAME NAMESYMBOL SYMBOLSYMBOL
I.B. I.B.
W.B.
OPTIONAL PARTS
R.B.
CN32
CN30
INDOOR CONTROLLER BOARD INDOOR CONTROLLER BOARD
SW2
SW1
SW6
SYMBOL EXPLANATION
NAME
CN2L
CN24
CONNECTOR (HA TERMINAL-A)
CN51
CN90
CN105
CN41
CONNECTOR (CENTRALLY CONTROL)
CONNECTOR (WIRELESS)
CONNECTOR
(RADIO FREQUENCY INTERFACE)
FUSE AC250V 6.3A FUSE
X1
AUX. RELAY
TB15
FLOAT SWITCH
RADIO FREQUENCY INTERFACE FOR RF THERMOSTAT
FS
RFI
REMOTE CONTROLLER BOARD
POWER SUPPLY (I.B.)
TERMINAL BLOCK
(REMOTE CONTROLLER TRANSMISSION LINE)
TERMINAL BLOCK
(INDOOR/OUTDOOR CONNECTING LINE)
TERMINAL BLOCK
(REMOTE CONTROLLER TRANSMISSION LINE)
TRANSMISSION (INDOOR-OUTDOOR)
POWER SUPPLY (I.B.)
LED1
TB6
LED3
LED2
TB4
Note1. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
2. Indoor and outdoor connecting wires are made with polarities,make wiring matchingterminal numbers (S1,S2,S3).
3. Symbols used in wiring diagram above are as follows.
:CONNECTOR
:TERMINAL
(HEAVY DOTTED LINE):FIELD WIRING
(THIN DOTTED LINE):OPTIONAL PARTS
4. Use copper supply wire.
TO OUTDOOR
UNIT
(YELLOW)
CN24
TB15 TB4
PARTS LOCATION
I . B.
CONTROL BOX

10
REFRIGERANT SYSTEM DIAGRAM
5
Pipe temperature
thermistor/liquid
(TH2)
Distributor
Condenser/evaporator
temperature thermistor
(TH5)
Room temperature
thermistor (TH1)
Refrigerant flow in cooling
Refrigerant flow in heating
Strainer
#50
Strainer
#50
Heat exchanger
Refrigerant GAS pipe connection
(Flare)
Refrigerant LIQUID pipe connection
(Flare)
PEA-A12AA4
PEA-A18AA4