Mitsubishi Electric PEA-RP200WKA User manual

HWE17030.qxd 17.11.9 16:28 Page 1

HWE17030.qxd 17.11.9 16:28 Page 2

CONTENTS
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2
SAFETY PRECAUTION
1
1-1. ALWAYS OBSERVE FOR SAFETY
Cautions for units utilising refrigerant R410A
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant 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.
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.)
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
In case of using the existing pipes for R22, be careful with
the followings.
·Avoid using thin pipes.
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.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrige-
rant 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.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil etc.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil etc.
Ventilate the room if refrigerant leaks during
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.)
Before obtaining access to terminal, all supply
circuits must be disconnected.
1-2. CAUTIONS RELATED TO NEW REFRIGERANT
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3
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Tool name Specifications
1Gauge manifold ·Only for R410A
·Use the existing fitting specifications. (UNF1/2)
·Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose ·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check ·Attach on vacuum pump.
6Refrigerant charge base
7Refrigerant cylinder ·Only for R410A ·Top of cylinder (Pink)
·Cylinder with syphon
8Refrigerant recovery equipment
PART NAMES AND FUNCTIONS
2
•Indoor Unit
Air inlet
Air outlet
In case of rear inlet
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4
• Wired remote controller (Option) PAR-33MAA
The functions which can be used are restricted according to each model.
The main display can be displayed in 2 different modes: "Full" and "Basic."
The initial setting is "Full."
Fri
Mode Temp. Fan
Room
Cool Auto
Set temp.
Fri
Cool
Mode Temp. Fan
AutoSet temp.
1
2
3
4
5
21
20
4
3
617191
15
14
13
12
6
8
10
1
11
7
9
22
5
2
Fan speed setting appears here.
4Fan speed
Appears while the units are operated in the
energy-save mode.
Appears while the outdoor units are operated in
the silent mode.
Preset temperature appears here.
Appears when the ON/OFF operation is centrally
controlled.
Current time appears here.
Appears when the buttons are locked.
Indoor unit operation mode appears here.
Appears when the operation mode is centrally
controlled.
15
16
2Preset temperature
6
12
1Operation mode
7
Appears when the units are operated in the
energy-save mode with 3D i-see Sensor.
18
Indicates the louver setting.
Indicates the ventilation setting.
Appears when the On/Off timer or Night setback
function is enabled.
20
21
13
Indicates when filter needs maintenance.
Appears when the filter reset function is centrally
controlled.
Appears when the preset temperature is centrally
controlled.
10
9
8
Appears when the Weekly timer is enabled.
14
Appears when the preset temperature range is
restricted.
22
Functions of the corresponding buttons appear
here.
5Button function guide
Appears when the built-in thermistor on the
remote controller is activated to monitor the
room temperature.
appears when the thermistor on the
indoor unit is activated to monitor the room
temperature.
17
3Clock
(See the Installation Manual.)
Current room temperature appears here.
11 Room temperature
(See the Installation Manual.)
Note: All icons are displayed for explanation.
5
6
1234
Press to turn ON/OFF the indoor unit.
1ON/OFF button
This lamp lights up in green while the unit
is in operation.It blinks while the remote
controller is starting up or when there is
an error.
Press to save the setting.
Main display:Press to change the operation
mode.
Main menu: Press to move the cursor down.
Press to return to the previous screen.
Main display : Press to decrease temperature.
Main menu: Press to move the cursor up.
Press to bring up the Main menu.
Main display : Press to increase temperature.
Main menu: Press to go to the previous page.
Operation settings will appear.
When the backlight is off, pressing any
button turns the backlight on and it
will stay lit for a certain period of time
depending on the screen.
Main display : Press to change the fan speed.
Main menu: Press to go to the next page.
6ON/OFF lamp
2SELECT button
7Function button F1
3RETURN button
8Function button F2
4MENU button
9Function button F3
5Backlit LCD
10 Function button F4
Fri
Room
Set temp.
Mode Temp. Fan
Cool Auto
Main
Main display:
Cursor Page
Main menu
Vane·Louver·Vent. (Lossnay)
High power
Timer
Weekly timer
OU silent mode
The functions of the function buttons
change depending on the screen. Refer
to the button function guide that appears
at the bottom of the LCD for the functions
they serve on a given screen.
When the system is centrally controlled,
the button function guide that
corresponds to the locked button will not
appear.
Main display Main menu
Function guide
7890 7890
•When the backlight is off, pressing any button turns the backlight on and
does not perform its function. (except for the ON/OFF button)
•Most settings (except ON/OFF, mode, fan speed, temperature) can be
made from the Menu screen.
Display
Full mode
Basic mode
Controller interface
Function buttons
78910
18
Indicates the vane setting.
19
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5
Not all functions are available on all models of indoor units.
Energy saving
Auto return
Schedule
Night setback
Main menu Press the MENU button.
Move the cursor to the desired item with the F1 and F2 buttons, and press the SELECT button.
Vane •Louver •Vent. (Lossnay)
High power
Weekly timer
Restriction
Maintenance
Initial setting
ON/OFF timer
Auto-OFF timer
Temp. range
Operation lock
Manual vane angle
Main/Sub
Timer
Main display
Contrast
Display details
Auto mode
Administrator password
Language selection
Daylight saving time
Service
Input maintenance info.
Function setting
Check
Self check
Maintenance password
Remote controller check
Test run
Clock
Auto descending panel
Menu structure
Filter information
Error information
3D i-see Sensor
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6
Setting and display items Setting details
Vane •Louver •Vent.
(Lossnay) Use to set the vane angle.
• Select a desired vane setting from 5 different settings.
Use to turn ON/OFF the louver.
• Select a desired setting from "ON" and "OFF."
Use to set the amount of ventilation.
• Select a desired setting from "OFF," "Low," and "High."
High power Use to reach the comfortable room temperature quickly.
• Units can be operated in the High-power mode for up to 30 minutes.
Timer ON/OFF timer* Use to set the operation ON/OFF times.
• Time can be set in 5-minute increments.
Auto-Off timer Use to set the Auto-OFF time.
• Time can be set to a value from 30 to 240 in 10-minute increments.
Use to check the filter status.
• The filter sign can be reset.
Filter information
Error information Use to check error information when an error occurs.
• Check code, error source, refrigerant address, unit model, manufacturing number, contact information (dealer's phone
number) can be displayed.
(The unit model, manufacturing number, and contact information need to be registered in advance to be displayed.)
Weekly timer* Use to set the weekly operation ON/OFF times.
Use to get the units to operate at the preset temperature after performing energy-save operation for a specified
• Up to 8 operation patterns can be set for each day.
(Not valid when the ON/OFF timer is enabled.)
Energy saving Auto return time period.
• Time can be set to a value from 30 and 120 in 10-minute increments.
(This function will not be valid when the preset temperature ranges are restricted.)
Schedule* Set the start/stop times to operate the units in the energy-save mode for each day of the week, and set the
energy-saving rate.
• Up to 4 energy-save operation patterns can be set for each day.
• Time can be set in 5-minute increments.
• Energy-saving rate can be set to a value from 0% and 50 to 90% in 10% increments.
Night setback* Use to make Night setback settings.
• Select "Yes" to enable the setting, and "No" to disable the setting. The temperature range and the start/stop times can be set.
Restriction Temp. range Use to restrict the preset temperature range.
• Different temperature ranges can be set for different operation modes.
Operation lock Use to lock selected functions.
• The locked functions cannot be operated.
Initial setting Main/Sub When connecting 2 remote controllers, one of them needs to be designated as a sub controller.
Clock Use to set the current time.
Main display Use to switch between "Full" and "Basic" modes for the Main display.
• The initial setting is "Full."
Contrast Use to adjust screen contrast.
Daylight saving time Sets the daylight saving time.
Initial setting Display details Make the settings for the remote controller related items as necessary.
Clock: The initial settings are "Yes" and "24h" format.
Temperature: Set either Celsius (˚C) or Fahrenheit (˚F).
Room temp. : Set Show or Hide.
Auto mode: Set the Auto mode display or Only Auto display.
Auto mode Whether or not to use the AUTO mode can be selected by using the button.
This setting is valid only when indoor units with the AUTO mode function are connected.
Administrator pass-
word
The administrator password is required to make the settings for the following items.
• Timer setting • Energy-save setting • Weekly timer setting
• Restriction setting • Outdoor unit silent mode setting • Night set back
Language selection Use to select the desired language.
Service Test run Select "Test run" from the Service menu to bring up theTest run menu.
• Test run • Drain pump test run
Input maintenance Select "Input maintenance Info." from the Service menu to bring up the Maintenance information screen.
The following settings can be made from the Maintenance Information screen.
• Model name input • Serial No.input • Dealer information input
Function setting Make the settings for the indoor unit functions via the remote controller as necessary.
LOSSNAY setting
(City Multi only) This setting is required only when the operation of City Multi units is interlocked with LOSSNAY units.
Check Error history: Display the error history and execute "delete error history".
Refrigerant leak check: Refrigerant leaks can be judged.
Smooth maintenance: The indoor and outdoor maintenance data can be displayed.
Request code: Details of the operation data including each thermistor temperature and error history can be checked.
Self check Error history of each unit can be checked via the remote controller.
Maintenance password Use to change the maintenance password.
Remote controller
check When the remote controller does not work properly, use the remote controller checking function to trouble-
shoot the problem.
* Clock setting is required.
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7
Model name
Mode
Power supplyInput kW
Running Current
❇1
❇1 A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Low-Mid-High) m3/min (L/S)
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Sound pressure level
(Low-Mid-High) dB (A)
Field drain pipe O.D mm
Dimensions W mm
Dmm
Hmm
kg
❇1 The value is measured at an external static pressure of 150 Pa.
INDOOR UNIT
Weight
(60Pa)
(75Pa)
(100Pa)
150Pa
Model name
Mode
Power supplyInput kW
Running Current
❇1
❇1 A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Low-Mid-High) m3/min (L/S)
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Sound pressure level
(Low-Mid-High) dB (A)
Field drain pipe O.D mm
Dimensions W mm
Dmm
Hmm
kg
❇1 The value is measured at an external static pressure of 150 Pa.
INDOOR UNIT
Weight
(60Pa)
(75Pa)
(100Pa)
150Pa
PEA-RP200WKA
Cooling Heating
Single phase, 50Hz, 220-240V
0.66
3.57
Galvanized sheets
Plate fin coil
Sirocco fan ×2
0.87
50-61-72 (833-1017-1200)
(60-75-100-)150
-
Remote controller & built-in
34-37-40
35-38-41
36-39-42
38-41-44
32
1370
1120
470
108
PEA-RP250WKA
Cooling Heating
Single phase, 50Hz, 220-240V
0.80
4.34
Galvanized sheets
Plate fin coil
Sirocco fan ×2
0.87
58-71-84 (967-1183-1400)
(60-75-100-)150
-
Remote controller & built-in
36-39-42
37-40-43
38-41-44
40-43-46
32
1370
1120
470
108
SPECIFICATION
3
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8
FAN PERFORMANCE AND CORRECTED AIR FLOW
4
(External static pressure 60 Pa)
(External static pressure 100 Pa)
(External static pressure 75 Pa)
(External static pressure 150 Pa)
0
50
100
150
200
40 45 50 55 60 65 70 75
0
50
100
150
200
40 45 50 55 60 65 70 75
0
50
100
150
200
40 45 50 55 60 65 70 75
0
50
100
150
200
40 45 50 55 60 65 70 75
Airflow rate (m3/min)
External static pressure (Pa) External static pressure (Pa)External static pressure (Pa)
Airflow rate (m3/min)
Airflow rate (m3/min)
Airflow rate (m3/min)
External static pressure (Pa)
Middle Rated point
Rated point
Low
High Middle Rated point
Low
High
Middle
Rated point
Low
High
Middle
Low
High
PEA-RP200WKA
HWE17030.qxd 17.11.9 16:28 Page 8

9
(External static pressure 60Pa)
(External static pressure 150Pa)
(External static pressure 75Pa)
(External static pressure 100Pa)
Rated pointRated point
Airflow rate(m3/min) [cfm]
External static pressure (Pa) [in.WG]
50
[1766]
55
[1942]
60
[2119]
65
[2295]
70
[2472]
75
[2648]
80
[2825]
85
[3001]
90
[3178]
0
[0]
50
[0.201]
100
[0.401]
150
[0.602]
200
[0.803]
Low
Middle
High
LimitLimit
Rated pointRated point
Airflow rate(m3/min) [cfm]
External static pressure (Pa) [in.WG]
50
[1766]
55
[1942]
60
[2119]
65
[2295]
70
[2472]
75
[2648]
80
[2825]
85
[3001]
90
[3178]
0
[0]
50
[0.201]
100
[0.401]
150
[0.602]
200
[0.803]
Low
Middle
High
Limit
Rated pointRated point
Airflow rate(m3/min) [cfm]
External static pressure (Pa) [in.WG]
50
[1766]
55
[1942]
60
[2119]
65
[2295]
70
[2472]
75
[2648]
80
[2825]
85
[3001]
90
[3178]
0
[0]
50
[0.201]
100
[0.401]
150
[0.602]
200
[0.803]
Low
Middle
High
LimitLimit
Rated pointRated point
Airflow rate(m3/min) [cfm]
External static pressure (Pa) [in.WG]
50
[1766]
55
[1942]
60
[2119]
65
[2295]
70
[2472]
75
[2648]
80
[2825]
85
[3001]
90
[3178]
0
[0]
50
[0.201]
100
[0.401]
150
[0.602]
200
[0.803]
Low
Middle
High
LimitLimit
PEA-RP250WKA
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10
SOUND PRESSURE LEVELS
5
5-1. Sound pressure level
 
 



0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63 125 250 500 1k 2k 4k 8k
NC-60
NC-50
Approximate minimum
audible limit on
continuous noise
NC-40
Octave band center frequencies (Hz)
NC-20
NC-30
High
Middle Low
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63 125 250 500 1k 2k 4k 8k
NC-60
NC-50
Approximate minimum
audible limit on
continuous noise
NC-40
Octave band center frequencies (Hz)
NC-20
NC-30
High
Middle Low
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63 125 250 500 1k 2k 4k 8k
NC-60
NC-50
Approximate minimum
audible limit on
continuous noise
NC-40
Octave band center frequencies (Hz)
NC-20
NC-30
High
Middle Low
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63 125 250 500 1k 2k 4k 8k
NC-60
NC-50
Approximate minimum
audible limit on
continuous noise
NC-40
Octave band center frequencies (Hz)
NC-20
NC-30
High
Middle Low
(External static pressure 60 Pa) (External static pressure 75 Pa)
(External static pressure 100 Pa) (External static pressure 150 Pa)
Ceiling concealed
5-2. NC curves
PEA-RP200WKA
HWE17030.qxd 17.11.9 16:28 Page 10

11
PEA-RP250WKA
(External static pressure 60Pa) (External static pressure 75Pa)
(External static pressure 100Pa) (External static pressure 150Pa)
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 than the displayed level during cooling and heating operation.
HWE17030.qxd 17.11.9 16:28 Page 11

12
6OUTLINES & DIMENSIONS
INDOOR UNIT
1120 29
15
327
489
(100)
(100)
164 44
24995
1250
23 1370
1324(Suspension bolt pitch)
15
50 50x20=1000
100 1100(Duct)
106724
10
422
465
41
20
105
30
50x6=300
340(Duct)
Keep duct-work length 850 or more
Suspension bolt holes 4-14x30 slot
2x22-ø3 holes
2x8-ø3 holes
Terminal block (Power source)
Knockout holes
Control box
Liquid pipe
2x21-ø3 holes 2x7-ø3 holes
Drain hole
Drain hole
Gas pipe
Terminal block (Transmission) Terminal block (MA remocon) (Normal type)
(Option)
420(Duct)
22.5
102
50x7=350
35
1124 601034(Suspension bolt pitch)
10
25 50x21=1050
1100(Duct)
150±5
(Actual length)
Drain hose
More than 20 More than 20
Note2
Access door
50
50
150~200
450
450
200~300
800
1350
730
PEA-RP200WKA Drain hose 32mm
<flexible joint>
<accessory>
Drain hoseLiquid pipe
ø9.52
ø25.4
Gas pipeMODEL
PEA-RP250WKA ø12.7
Note 1.Use M10 screw for the suspension bolt (field supply). 2.Keep the service space for the maintenance from the bottom when the heat exchanger is cleaned. 3.Make sure to install the air filter (field supply) on the air intake side. In case field supplied air filter is used, attach it where the filter service is easily done.
Top
view
Inlet air
side view
Piping
side view
Bottom
Top
Air inlet Air
outlet
Drain Piping.
Ceiling surface
Make the access door at the appointed position properly for service maintenance.
Access door
Required space for service and maintenance.
1
1
2
2
3
3
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13
7WIRING DIAGRAM
4 3 2 1
1 3 5
2
2
1
1
25431
21
8543 1
21
442331
4321
531
13
54321
1 2 3 4 5 1 2
76543213
3
1
1
3 1
12345
331113
8
7
2
6
6
5
4
43
6
3
2
1
1
3 3 1 1
X100
F100
CNCT2
(BLUE)
DSA 001
ZNR 002
(RED)
CNACL
CNR1(RED)
X010
ZNR 003 C015 C016
ZNR 001 F001
F01
CNPW1
CNRSC
CNRSP
CNXC1
CNXB1
CNFAN CNP
CNDB
CNPW2
CN18V
(RED)
(GREEN)
CNTH
CNCT1
CNRS2CN15V
CNVDC IPM
CNDP
CNINV
NF
CNXC2
CN100
CN41CN32
CN90
LED1LED2
LED3
CN22
(BLUE)
(BLUE)
CN44
CN4F CN4F
CN20 (RED)
CN3C
SW5SW1
SW6 SWEONOFF
SW2
CNXB2
U
t˚ t˚ t˚ t˚
U
U
FS
M
1~
DP
Note 3
Note 3
11
22
R
ACL
INSIDE SECTION OF CONTROL BOX
MS
3~
NF.B.
INV.B.
I.B.
P.B.
TO OUTDOOR UNIT
POWER SUPPLY AC220-240V 50Hz TO MA REMOTE CONTROLLER
TB2
DB01
ACCT
TB4
TB15
THHS
MF
TH1 TH2 TH5
L
3 42
1
33 1
UVW
1
22
S1 S2 S3
N 1 2
Inside < > is the optional parts.
Float switch Drain pump
NOTE:1.The wirings to TB2,TB4,TB15 shown in dotted line are field work. 2.Mark indicates terminal block, connector. 3.The part of thin dotted line indicates the circuit for optional parts. 4.To perform a drainage test for the drain pump turn on the SWE on the control board while the indoor unit is being powerd. *Be sure to turn off the SWE after completing a drainage test or test run.
Switch (for mode selection) Switch (for capacity code) Switch (for model selection) Switch (for model selection) Connector (emergency operation) Intelligent power module
SYMBOL EXPLANATION NAMESYMBOL
TB2 TB4
TB15
CN41 CN90
IPM
<DP>
<FS>
ACCT
LED2 LED3 LED1
R
I.B.
P.B. TH1 TH2 TH5
F001 F100
F01
Connector (HA terminal-A) Connector (Wireless) Current Sensor (AC) Indoor controller board
NF.B. Power supply board
Noise filter board Power source terminal block Transmission terminal block Transmission terminal block Fuse(AC250V 10A) Fuse(AC250V 15A) Fuse(3.15A) Resistor Thermistor(piping temp.detection/liquid) Thermistor(piping temp.detection/gas) Thermistor(inlet air temp.detection)
MF Fan motor
Diode bridge
DB01
LED (Power supply) LED (Remote controller supply) LED (transmission indoor-outdoor)
SW6(I.B.) SW5(I.B.) SW2(I.B.) SW1(I.B.) SWE(I.B.)
DSA001 ZNR001
~ZNR003
X010,X100
NF Arrester
Varistor Aux. relay Noise filter Inverter board
INV.B.
THHS Thermistor(heatsink)
AC reactor (Power factor improvement)
ACL
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8REFRIGERANT SYSTEM DIAGRAM
Thermistor TH2
Pipe temperature(Liquid)
Distributor
with strainer (#100)
Thermistor TH5
(Cond./ Eva.temperature)
Thermistor TH1
(Room temperature)
Refrigerant flow in cooling
Refrigerant flow in heating
Heat exchanger
Refrigerant GAS pipe connection (Brazed (PEA-200,250))
Refrigerant LIQUID pipe connection (Brazed (PEA-200,250))
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15
9
TROUBLESHOOTING
9-1. CAUTIONS ON TROUBLESHOOTING
(1) Before troubleshooting, check the followings:
1Check the power supply voltage.
2Check the indoor/outdoor connecting wire for mis-wiring.
(2) Take care the followings during servicing.
1Before servicing the air conditioner, be sure to turn off the remote controller first to stop the main unit, and then turn
off the breaker.
2When removing the board in the control box, hold the edge of the board with care NOT to apply stress on the
components.
3When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.
Lead wires
<Check code displayed by self-diagnosis and actions to be taken for service (summary)>
Present and past check codes are logged, and they can be displayed on the wired remote controller or controller board of out-
door unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa-
rized in the table below. Check the contents below before investigating details.
Judge what is wrong and take a corrective action according
to “9-3. SELF-DIAGNOSIS ACTION TABLE”.
Conduct troubleshooting and ascertain the cause of the
trouble according to “9-4.TROUBLESHOOTING BY
INFERIOR PHENOMENA”.
1
2 Reset check code logs and restart the unit after finishing
service.
3 There is no abnormality in electrical component,
controller board, remote controller, etc.
1 Re-check the abnormal symptom.
2 Conduct troubleshooting and ascertain the cause of
the trouble according to “9-4.TROUBLESHOOTING
BY INFERIOR PHENOMENA”.
3 Continue to operate unit for the time being if the cause
is not ascertained.
4 There is no abnormality concerning of parts such as
electrical component, controller board, remote controller, etc.
The trouble is reoccurring.
The trouble is not reoccurring.
Re-check the symptom, and check the installation
environment, refrigerant amount, weather when the
trouble occurred, matters related to wiring, etc.
Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise, etc.
Unit conditions at service Actions to be taken for service (summary)
Displayed
Not displayed
Logged
Not logged
Check code
9-2. TROUBLESHOOTING
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16
•If the unit cannot be operated properly after the test run has been performed, refer to the following table to remove the cause.
Symptom Cause
Wired remote controller LED 1, 2 (PCB in outdoor unit)
On the wireless remote controller with condition above, following phenomena take place.
• No signals from the remote controller are accepted.
• Operation lamp is blinking.
• The buzzer makes a short piping sound.
PLEASE WAIT
PLEASE WAIT →Error code
Display messages do not
appear even when operation
switch is turned ON (operation
lamp does not light up).
For about 2
minutes after
power-on
After about 2
minutes has
expired after
power-on
After LED 1, 2 are lighted, LED 2 is
turned off, then only LED 1 is
Only LED 1 is lighted. →
LED 1, 2 blink.
Only LED 1 is lighted. →
LED 1 blinks twice,
LED 2 blinks once.
•For about 2 minutes after power-on,op-
eration 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
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2, 3) provided on the indoor controller board, refer to the following table.
LED1 (power for microcomputer) Indicates whether control power is supplied. Make sure that this LED is
always lit.
LED2 (power for remote controller) 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”.
LED3 (communication between indoor and
outdoor units) Indicates state of communication between the indoor and outdoor units. Make sure that this LED is always blinking.
lighted. (Correct operation)
Wireless remote controller
(1) Turn on the power to the unit at least 12 hours before the test run.
(2) Press the TEST RUN button AAtwice continuously.
(Start this operation from the status of remote controller display turned off.)
and current operation mode are displayed.
(3) Press the MODE button BBto activate COOL mode, then check whether cool air is blown out from the unit.
(4) Press the MODE button BBto activate HEAT mode, then check whether warm air is blown out from the unit.
(5) Press the FAN button CCand check whether fan speed changes.
(6) Press the VANE button DDand check whether the auto vane operates properly.
(7) Press the ON/OFF button to stop the test run.
Note:
• Point the remote controller towards the indoor unit receiver while following steps (2) to (7).
• It is not possible to run the in FAN, DRY or AUTO mode.
TEST RUN
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[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
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
Symptom
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 or serial communication
error (Indoor unit)
–
–
Other errors (Refer to the technical manual for the outdoor unit.)
Remark
For details, check the LED
display of the outdoor controller
board.
[Output pattern A] Errors detected by indoor unit
Digital error display on wireless remote controller
[Output pattern A]
500
No output for 2.5 seconds
No output
for 2.5 seconds Output for 3 seconds No output for 2.5 seconds Output for 3 seconds
No output for 2.5 seconds
500 500 500
LED output that indicates a signal has been
successfully received from the wireless remote controller The number of output times is specified
for each error code.
The number of output times is specified
for each error code. The number of output times is specified for each error code.
The number of output times is specified
for each error code.
LED output that indicates a signal has been
successfully received from the wireless remote controller
Confirmation of the connection to the wireless
remote controller for an effective signal reception
Confirmation of the connection to the wireless
remote controller for an effective signal reception
500
Repeat
(ms)
(ms)
....
....
Repeat
....
[Output pattern B]
When air conditioner detects an error, the operation lamp on the indoor unit infrared adaptor will blink to indicate that the unit has
come to an abnormal stop. There are two error output patterns A and B as shown below.
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
Wired remote
controller
Check code
P1
P2, P9
E6, E7
P4
P5
P6
EE
P8
E4
–
Fb
Pb
– –
Symptom
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.)
Fan controller error
No corresponding
Remark
*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 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.
First
time
First
time
First
time
First
time
nth
time
nth
time
Second
time
Second
time
Second
time
Second
time
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18
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 board, refer to the following table.
•If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
On the 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)
PLEASE WAIT
PLEASE WAIT →Error code
Display messages do not appear
even when operation switch is
turned ON (operation lamp does
not light up).
Symptom
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.
•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
For about 2 minutes
followingpower-on
After about 2 min-
utes has expired
followingpower-on
LED 1, 2 (PCB in outdoor unit)Wired remote controller Cause
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