SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
March 2009
No. OCH457
SERVICE MANUAL
Indoor unit
[Model names] [Service Ref.]
PKA-A24KA
PKA-A30KA
PKA-A36KA
PKA-A24KAL
PKA-A30KAL
PKA-A36KAL
PKA-A24KA.TH PKA-A30KA.TH PKA-A36KA.TH PKA-A24KAL.TH PKA-A30KAL.TH PKA-A36KAL.TH
NOTE:
•This manual describes only service data of the indoor units.
•RoHS compliant products have <G> mark on the spec name plate.
CONTENTS
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1. REFERENCE MANUAL................................... |
2 |
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3 |
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2. SAFETY PRECAUTION |
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3. PART NAMES AND FUNCTIONS................... |
4 |
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7 |
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4. SPECIFICATIONS |
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8 |
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5. NOISE CRITERION CURVES |
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INDOOR UNIT |
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9 |
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6. OUTLINES AND DIMENSIONS |
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7. WIRING DIAGRAM......................................... |
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10 |
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11 |
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8. REFRIGERANT SYSTEM DIAGRAM |
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AUTO |
9. TROUBLESHOOTING |
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12 |
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COOL |
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DRY |
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HEAT |
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FAN |
10. SPECIAL FUNCTION |
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26 |
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11. DISASSEMBLY PROCEDURE |
29 |
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TEMP. |
ON/OFF |
PARTS CATALOG (OCB457)
WIRED REMOTE |
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CONTROLLER |
WIRELESS REMOTE |
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CONTROLLER |
3 3 2 2 3 |
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1 REFERENCE MANUAL
1-1. OUTDOOR UNIT SERVICE MANUAL
Service Ref.
PUZ-A24/30/36NHA3 PUZ-A24/30/36NHA3-BS PUY-A24/30/36NHA3 PUY-A24/30/36NHA3-BS
PUZ-HA30/36NHA2
Service Manual No.
OCH458
OCB458
OCH426
OCB426
1-2. TECHNICAL DATA BOOK
Series (Outdoor unit) |
Data Book No. |
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PUZ-A·NHA3(-BS) |
OCS14 |
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PUY-A·NHA3(-BS) |
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PUZ-HA·NHA2 |
OCS15 |
2
2 SAFETY PRECAUTION
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
2-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilising refrigerant R410A
Use new refrigerant 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 keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)
If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.
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.
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 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.
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Tools for R410A |
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Gauge manifold |
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Flare tool |
Charge hose |
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Size adjustment gauge |
Gas leak detector |
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Vacuum pump adaptor |
Torque wrench |
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Electronic refrigerant |
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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.
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 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.)
3
Unit
Gravimeter
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. |
Tool name |
Specifications |
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1 |
Gauge manifold |
· Only for R410A |
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· Use the existing fitting specifications. (UNF1/2) |
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· Use high-tension side pressure of 5.3MPa·G or over. |
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2 |
Charge hose |
· Only for R410A |
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· Use pressure performance of 5.09MPa·G or over. |
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3 |
Electronic scale |
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4 |
Gas leak detector |
· Use the detector for R134a, R407C or R410A. |
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5 |
Adaptor for reverse flow check |
· Attach on vacuum pump. |
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6 |
Refrigerant charge base |
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7 |
Refrigerant cylinder |
· Only for R410A · Top of cylinder (Pink) |
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· Cylinder with syphon |
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8 |
Refrigerant recovery equipment |
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3 PART NAMES AND FUNCTIONS |
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Indoor unit |
Front grille |
Filter |
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Air inlet |
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Emergency operation |
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switch |
Air outlet |
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Louver |
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Vane |
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4
Wired remote controller
Display Section
Day-of-Week
For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit.
Identifies the current operation
Shows the operating mode, etc. *Multilanguage display is available.
“Centrally Controlled”indicator
Indicates that operation from the remote controller has been prohibited by a master controller.
“Timer is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
Shows the current day of the week.
Time/Timer Display
Shows the current time, unless the simple or Auto Off timer is set.
If the simple or Auto Off timer is set, the time to be switched off is shown.
TIME SUN MON TUE WED THU FRI SAT |
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TIMER |
Hr |
ON |
AFTER |
AFTER |
OFF |
ERROR CODE |
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FUNCTION |
°F°C |
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FILTER |
°F°C |
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WEEKLY |
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ONLY1Hr. |
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SIMPLE |
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AUTO OFF |
Up/Down Air Direction indicator
The indicator shows the direction of the outcoming airflow.
“One Hour Only” indicator
Displayed if the airflow is set to low or downward during COOL or DRY mode. (Operation varies according to model.)
The indicator goes off in 1 hour, when the airflow direction
also changes.
Room Temperature display
Shows the room temperature. The room temperature display range is 46–102˚F. The display blinks if the temperature
is less than 46˚F or 102˚F or more.
Louver display
Indicates the action of the swing louver. Does not appear if the louver is not running.
(Power On indicator)
Indicates that the power is on.
“Sensor” indication
Displayed when the remote controller sensor is used.
“Locked” indicator
Indicates that remote controller buttons have been locked.
“Clean The Filter” indicator
To be displayed on when it is time to clean the filter.
Timer indicators
The indicator comes on if the corresponding timer is set.
Fan Speed indicator
Shows the selected fan speed.
Ventilation indicator
Appears when the unit is running in Ventilation mode.
Operation Section
Temperature setting buttons |
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Down |
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Up |
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Timer Menu button |
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(Monitor/Set button) |
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Mode button (Return button) |
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TEMP. |
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Set Time buttons |
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Back |
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MENU |
ON/OFF |
Ahead |
BACK |
MONITOR/SET |
DAY |
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Timer On/Off button |
PAR-21MAA |
CLOCK |
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(Set Day button) |
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Opening the |
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lid |
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ON/OFF |
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FILTER |
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CHECK |
TEST |
OPERATION |
CLEAR |
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Built-in temperature sensor
ON/OFF button
Fan Speed button
Filter button (<Enter> button)
Test Run button
Check button (Clear button)
Airflow Up/Down button
Louver button
( Operation button)
To return operation number
Ventilation button
(Operation button)
To go to next operation number
Note:
•“PLEASE WAIT” message
This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.
•“NOT AVAILABLE” message
This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have).
If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as far as any of the indoor units is equipped with the function.
5
Wireless remote controller
OPERATION MODE display
OPERATION MODE display
Indicates which operation mode is in effect.
display
The vertical direction of airflow is indicated.
display
Displays selected fan speed.
ON/OFF button
The unit is turned ON and OFF alternately each time the button is pressed.
FAN SPEED SELECT button
Changes the fan speed.
MODE SELECT button
Switches the operation mode between COOLING/DRY/FAN/HEATING and AUTO mode.
In case the outdoor unit is cooling only type, the heating and auto mode are not available.
CHECK-TEST RUN button
Performs an inspection check or test operation. Do not use it for normal operation.
VANE CONTROL button
Changes the air flow direction.
CHECK TESTRUN display
Indicate that the unit is being checked or test-run.
MODELSELECT display
Blinks when model is selected.
COOL CHECK |
TEST |
°F |
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MODEL |
RUN |
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°C |
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DRY SELECT |
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STOP AMPM |
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AUTO FAN |
SWING |
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FAN |
START AMPM |
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HEAT NOT AVAILABLE |
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ON/OFF TEMP
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FAN |
AUTO STOP |
MODE |
VANE |
AUTO START |
CHECK |
LOUVER |
h |
TEST RUN |
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min |
SET |
RESET CLOCK |
display
Lights up while the signal is transmitted to the indoor unit when the button is pressed.
Temperature setting display
Indicates the desired temperature setting which is set.
CLOCK display
Displays the current time.
TIMER display
Displays when in timer operation or when setting timer.
“ ” “ ” display
Displays the order of timer operation.
“” “” display
Displays whether timer is on or off.
button
Sets any desired room temperature.
TIMER CONTROL buttons
AUTO STOP (OFF timer): when this switch is set, the air conditioner will be automatically stopped at the preset time.
AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time.
"h" and "min" buttons
Buttons used to set the “hour and minute” of the current time and timer settings.
LOUVER button
Changes left / right airflow direction.
(Not available for this model.)
CLOCK button
RESET button
SET button
6
4 SPECIFICATIONS
INDOOR UNIT
Service Ref.
Power supply(phase, cycle, voltage) Max. Fuse Size Min.Circuit Ampacity
External finish Heat exchanger
Fan Fan(drive) % No. Fan motor output Fan motor
Airflow(Low-Middle-High)
External static pressure
Operation control & Thermostat Noise level(Low-Middle-High) Field drain pipe I.D.
Dimensions W
D
H
Weight
A
A
kW
F.L.A m3/min(CFM)
Pa(mmAq)
dB mm(in.) mm(in.) mm(in.) mm(in.) kg(lbs)
INDOOR UNIT
Service Ref.
Power supply(phase, cycle, voltage) Max. Fuse Size
Min.Circuit Ampacity External finish
Heat exchanger
Fan Fan(drive) % No. Fan motor output
Fan motor
Airflow(Low-Middle-High)
External static pressure Operation control & Thermostat Noise level(Low-Middle-High)
Field drain pipe I.D.
Dimensions W D H
Weight
A
A
kW
F.L.A
*/min(CFM)
Pa(mmAq)
dB mm(in.) mm(in.) mm(in.) mm(in.) kg(lbs)
INDOOR UNIT
Service Ref.
Power supply(phase, cycle, voltage) Max. Fuse Size
Min.Circuit Ampacity
External finish Heat exchanger
Fan Fan(drive) % No. Fan motor output
Fan motor
Airflow(Low-Middle-High)
External static pressure
Operation control & Thermostat
Noise level(Low-Middle-High) Field drain pipe I.D.
Dimensions W
D
H
Weight
A
A
kW F.L.A
m3/min(CFM)
Pa(mmAq)
dB mm(in.) mm(in.) mm(in.) mm(in.) kg(lbs)
PKA-A24KA.TH, PKA-A24KAL.TH
1 phase, 60Hz, 208/230V
15
1
White Munsell 1.0Y 9.2/0.2 Plate fin coil
Line flow fan (direct) % 1
0.056
0.36
Dry: 18-20-22 (635-705-775) Wet: 16-18-20 (570-635-700)
0(direct blow) Remote controller & built-in
39-42-45 16(5/8)
1170 (46-1/16)
295 (11-5/8)
365 (14-3/8)
21 (46)
PKA-A30KA.TH, PKA-A30KAL.TH
1 phase, 60Hz, 208/230V
15
1
White Munsell 1.0Y 9.2/0.2 Plate fin coil
Line flow fan (direct) % 1 0.056
0.36
Dry: 18-20-22 (635-705-775) Wet: 16-18-20 (570-635-700)
0(direct blow) Remote controller & built-in
39-42-45
16(5/8) 1170 (46-1/16)
295 (11-5/8)
365 (14-3/8)
21 (46)
PKA-A36KA.TH, PKA-A36KAL.TH
1 phase, 60Hz, 208/230V
15
1
White Munsell 1.0Y 9.2/0.2 Plate fin coil
Line flow fan (direct) % 1
0.056
0.57
Dry: 20-23-26 (705-810-920)
Wet: 18-21-23 (635-730-830)
0(direct blow) Remote controller & built-in
43-46-49
16(5/8)
1170 (46-1/16)
295 (11-5/8)
365 (14-3/8)
21 (46)
7
5 NOISE CRITERION CURVES
PKA-A24KA.TH |
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NOTCH |
SPL(dB) |
LINE |
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PKA-A30KA.TH |
High |
45 |
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Low |
39 |
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PKA-A24KAL.TH |
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PKA-A30KAL.TH |
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90 |
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μbar) |
80 |
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dB(0dB=0.0002 |
70 |
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NC-70 |
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60 |
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LEVEL, |
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NC-60 |
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PRESSURE |
50 |
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NC-50 |
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40 |
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SOUND |
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NC-40 |
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BAND |
30 |
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NC-30 |
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OCTAVE |
20 |
APPROXIMATE |
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THRESHOLD OF |
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HEARING FOR |
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NC-20 |
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CONTINUOUS |
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NOISE |
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10 |
63 |
125 |
250 |
500 |
1000 |
2000 |
4000 |
8000 |
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BAND CENTER FREQUENCIES, Hz
PKA-A36KA.TH |
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NOTCH |
SPL(dB) |
LINE |
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PKA-A36KAL.TH |
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High |
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49 |
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Low |
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43 |
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90 |
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) |
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μbar |
80 |
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0.0002 |
70 |
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dB (0dB= |
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NC-70 |
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60 |
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LEVEL, |
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NC-60 |
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PRESSURE |
50 |
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NC-50 |
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BAND SOUND |
40 |
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NC-40 |
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30 |
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NC-30 |
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OCTAVE |
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20 |
APPROXIMATE |
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THRESHOLD OF |
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HEARING FOR |
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NC-20 |
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CONTINUOUS |
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10 |
NOISE |
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63 |
125 |
250 |
500 |
1000 |
2000 |
4000 |
8000 |
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BAND CENTER FREQUENCIES, Hz
UNIT
WALL
3.3ft
3.3ft
MICROPHONE
8
6 OUTLINES AND DIMENSIONS
PKA-A24KA.TH PKA-A30KA.TH PKA-A36KA.TH PKA-A24KAL.TH PKA-A30KAL.TH PKA-A36KAL.TH
Unit: inch (mm)
5-17/132(140.3) 2-9/16(65.2)
7/16(11)
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Top side |
16-11/16(423.7) |
17(431.7) |
Knock out hole for left piping
2-3/32(53) 1-1/4(32) 23/32(18)
Min.9/32(7)
Left side |
Front side |
Right side |
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Mount board |
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14-3/8(365) |
C |
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2-29/32(74) |
33-21/32(855) |
9-1/2(241) |
11-5/8(295) |
3/16(5) |
A |
46-1/16(1170) |
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Operation lamp |
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Front side(Grille open) |
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Knock out hole |
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for right piping |
DEFROST/STAND BY lamp
Receiver
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Terminal block for Outdoor unit |
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Terminal block for power supply (option) |
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Terminal block for |
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MA-remote controller (only PKA-A·KA models) |
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Filter hook |
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Emergency operation switch |
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(cooling/heating) |
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1-3/16(30) |
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1-3/8(35) |
17-15/32(444)Gas pipe |
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4-27/32(123) |
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2-19/32(66) |
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18-31/32(482)Liquid pipe |
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6-1/16(154) |
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23-1/32(585)Drain hose |
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5-9/32(134) |
Under side
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Piping connection |
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Vane(auto) |
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Louver(manual) |
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Liquid pipe |
Refrigerant pipe: 3/8 O.D(:9.52) |
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B |
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B |
Flared connection: 3/8F |
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Knockout hole |
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Sleeve |
Through hole |
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for lower piping |
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Gas pipe |
Refrigerant pipe: 5/8 O.D(:15.88) |
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(purchased locally) |
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Flared connection: 5/8F |
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:2-15/16 |
:2-15/16~:3-5/32 |
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Drain hose |
5/8(:16) O.D |
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(:75) |
(:75~:80) |
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Required space(Indoor unit) |
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Air inlet |
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Knockout hole for piping |
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27/32(250)-Min.9 |
7/8(48)-Min.1 |
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5/8(67)-2 1/32(77)-3 |
9/16(65)-2 |
5/16(7.8) 1/32(77)-3 |
5/8(67)-2 |
A |
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C |
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B |
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Air outlet |
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5/16(7.8) |
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Min.8-21/32(220) |
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Min.2(50.5) |
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2-9/16(65) |
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3-1/32(77) |
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2-9/16(65) |
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3-7/16(87) |
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Min.2-27/32(72.4) |
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13/32(10.7) |
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Center measurement hole |
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:3/32(:2.5) |
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0 |
2-1/8(54) |
1/8(3) |
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3/8(517.4)-20 |
4-:11/32(:9) Bolt hole |
11/32(110)-4 |
3/8(60)-2 13/32(10) 0 13/32(10) 3/8(60)-2 |
11/32(110)-4 |
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3/8(314)-12 |
11/32(364)-14 |
1/8(384.5)-15 |
3/32(408.5)-16 |
9/32(439)-17 7/8(454)-17 5/16(465.5)-18 |
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Tapping |
7/8(454)-17 9/32(439)-17 3/32(408.5)-16 1/8(384)-15 |
11/32(364)-14 |
3/8(314)-12 |
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Mount board |
Indoor unit outline |
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75-:3/16(:5.1) |
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screw hole |
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2-1/8(54) |
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1-1/4(32) |
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5/8(15.5) |
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31/32(25) |
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1/2(12.5) |
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0 |
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0 |
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31/32(25) |
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1/2(12.5) |
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1-31/32(50) |
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1-15/32(37.5) |
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2-15/16(75) |
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2-15/32(62.5) |
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3-15/16(100) |
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3-7/16(87.5) |
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4-19/32(117) |
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4-1/8(104.5) |
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4-29/32(125) |
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5-3/32(129.5) |
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5-19/32(142) |
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6-9/16(167) |
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7-9/16(192) |
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8-17/32(217) |
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9-17/32(242) |
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9-1/32(229.5) |
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11(279.5) |
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10-13/32(264) |
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11-1/2(292) |
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11-1/2(292) |
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12-5/32(308.5) |
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0 |
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R1 |
11/32(339)-13 |
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12-1/4(311) |
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1/32(585)-23 |
7/8(530.5)-20 |
15/16(430.5)-16 |
1/8(384)-15 |
11/32(339)-13 |
7/16(189)-7 |
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17/32(216.5)-8 |
3/4(349.2)-13 |
1/8(384)-15 |
11/16(449.2)-17 |
1/32(585)-23 |
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- |
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15/ |
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32(R37 |
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. |
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Knockout hole for |
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5) |
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Wall hole for |
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rear piping |
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Wall hole for |
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left rear piping |
2-15/16×18-29/32(75×480) |
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right rear piping |
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9
7 WIRING DIAGRAM
PKA-A24KA.TH PKA-A30KA.TH PKA-A36KA.TH PKA-A24KAL.TH PKA-A30KAL.TH PKA-A36KAL.TH
Notes:
1.SymboIs used in wiring diagram above are, : Connector, : Terminal (block). 2.Indoor and outdoor connecting wires have poIarities, make sure to match terminal
numbers (S1, S2, S3)for correct wirings.
3.Since the outdoor side electric wiring may change, be sure to check the outdoor unit electric wiring diagram for servicing.
4.This diagram shows the wiring of indoor and outdoor connecting wires.(specification of 230V), adopting superimposed system for power and signal.
+1: If indoor and outdoor units have separate power applies, refer to Fig 1.
+2: For power supply system of this unit, refer to the caution label located near this diagram. +3: Use copper supply wires.
10